WorldWideScience

Sample records for brushless dc motor

  1. Teaching about operation of brushless DC motors

    OpenAIRE

    Čufar, Aleksandra

    2013-01-01

    Brush DC motor is being replaced by brushless DC motors on every area of application. My diploma thesis is a presentation of brushless DC motor, how it works and its application. Within first part we describe various electric motors and their application. There are several types of electric motors division. Last to be added is a brushless motor. Within second part of thesis we look into a brushless DC motor, how it works, its application and control. In the third part of thesis we construct a...

  2. Brushless DC Motors, Velocity and Position Control of the Brushless DC Motor.

    Science.gov (United States)

    1986-06-01

    DC motor was designed using the Hall effect sensors. In addition, the position control of the brushless DC motor was developed using an optical encoder to sense angular position changes and a microprocessor to provide the desired position control. A Pittman 5111 wdg 1 brushless DC motor was used for this study. The design of the digital tachometer and pulse width modulator for velocity control and the design of the Z-80 based microprocessor controller and software design are described in

  3. Motor control for a brushless DC motor

    Science.gov (United States)

    Peterson, William J. (Inventor); Faulkner, Dennis T. (Inventor)

    1985-01-01

    This invention relates to a motor control system for a brushless DC motor having an inverter responsively coupled to the motor control system and in power transmitting relationship to the motor. The motor control system includes a motor rotor speed detecting unit that provides a pulsed waveform signal proportional to rotor speed. This pulsed waveform signal is delivered to the inverter to thereby cause an inverter fundamental current waveform output to the motor to be switched at a rate proportional to said rotor speed. In addition, the fundamental current waveform is also pulse width modulated at a rate proportional to the rotor speed. A fundamental current waveform phase advance circuit is controllingly coupled to the inverter. The phase advance circuit is coupled to receive the pulsed waveform signal from the motor rotor speed detecting unit and phase advance the pulsed waveform signal as a predetermined function of motor speed to thereby cause the fundamental current waveform to be advanced and thereby compensate for fundamental current waveform lag due to motor winding reactance which allows the motor to operate at higher speeds than the motor is rated while providing optimal torque and therefore increased efficiency.

  4. Simulation and Performance of Brushless DC Motor Actuators.

    Science.gov (United States)

    1985-12-01

    AD-RI63 725 SIMULATION AND PERFORMANCE OF IRUSHLESS DC MOTOR ACTUATORS(U) NAVAL POSTGRADUATE SCHOOL MONTEREY CA A GERDA DEC 85 NPS69-85-628 M...California Progress Report SIMULATION AND PERFORMANCE OF BRUSHLESS DC MOTOR ACTUATORS IN SUPPORT OF THE PROGRAM "ADVANCED MISSILE CONTROL DEVICES"I of...34.’ SIMULATION AND PERFORMANCE OF BRUSHLESS DC MOTOR ACTUATORS SUMMARY The simulation model for a Brushless D.C. Motor and the associated * commutation power

  5. Variable Rail Voltage Control of a Brushless DC (BLDC) Motor

    Science.gov (United States)

    2013-01-01

    Variable Rail Voltage Control of a Brushless DC (BLDC) Motor by Yuan Chen, Joseph Conroy, and William Nothwang ARL-TR-6308 January 2013...TR-6308 January 2013 Variable Rail Voltage Control of a Brushless DC (BLDC) Motor Yuan Chen, Joseph Conroy, and William Nothwang Sensors...DATES COVERED (From - To) 4. TITLE AND SUBTITLE Variable Rail Voltage Control of a Brushless DC (BLDC) Motor 5a. CONTRACT NUMBER 5b. GRANT

  6. Brushless dc motor uses electron beam switching tube as commutator

    Science.gov (United States)

    Studer, P.

    1965-01-01

    Electron beam switching tube eliminates physical contact between rotor and stator in brushless dc motor. The tube and associated circuitry control the output of a dc source to sequentially energize the motor stator windings.

  7. Integrated-Circuit Controller For Brushless dc Motor

    Science.gov (United States)

    Le, Dong Tuan

    1994-01-01

    Generic circuit performs commutation-logic and power-switching functions for control of brushless dc motor. Controller includes commutation-logic and associated control circuitry, power supply, and inverters containing power transistors. Major advantages of controller are size, weight, and power consumption can be made less than other brushless-dc-motor controllers.

  8. Rotor position sensor switches currents in brushless dc motors

    Science.gov (United States)

    1965-01-01

    Reluctance switch incorporated in an induction motor is used for sensing rotor position and switching armature circuits in a brushless dc motor. This device drives the solar array system of an unmanned space satellite.

  9. Simulation of Brushless DC Motor using Direct Torque Control

    OpenAIRE

    Kusuma, G.; S. Rukhsana Begum

    2014-01-01

    This paper deals with modelling of three phases brushless dc motor with MATLAB/SIMULINK software BLDC motor have advantages according to brushless dc motor and induction motor’s. They have improve speed torque charactistics, high efficiency high transient response and small size. It approaches for reducing the torque ripples of BLDC motor using DTC, by using control technique’s ,but present work mainly concentrate on advanced method. The whole drive system is simulated based o...

  10. Brushless DC motor Drive during Speed regulation with Current Controller

    OpenAIRE

    Bhikshalu Manchala; T.Amar Kiran

    2015-01-01

    Brushless DC Motor (BLDC) is one of the best electrical drives that have increasing popularity, due to their high efficiency, reliability, good dynamic response and very low maintenance. Due to the increasing demand for compact & reliable motors and the evolution of low cost power semiconductor switches and permanent magnet (PM) materials, brushless DC motors become popular in every application from home appliances to aerospace industry. The conventional techniques for controlling...

  11. Universal Brushless-DC Motor Controller for Space Applications Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The goal of this SBIR is to adapt an initial prototype ultra-miniature high-performance brushless-DC-motor controller, code named 'Puck', for use by NASA across a...

  12. Mathematical modeling of electromechanical processes in a brushless DC motor

    Directory of Open Access Journals (Sweden)

    V.I. Tkachuk

    2014-03-01

    Full Text Available On the basis of initial assumptions, a mathematical model that describes electromechanical processes in a brushless DC electric motor with a salient-pole stator and permanent-magnet excitation is created.

  13. Tachometers Derived From a Brushless DC Motor

    Science.gov (United States)

    Howard, David E.; Smith, Dennis A.

    2007-01-01

    The upper part of the figure illustrates the major functional blocks of a direction-sensitive analog tachometer circuit based on the use of an unexcited two-phase brushless dc motor as a rotation transducer. The primary advantages of this circuit over many older tachometer circuits include the following: Its output inherently varies linearly with the rate of rotation of the shaft. Unlike some tachometer circuits that rely on differentiation of voltages with respect to time, this circuit relies on integration, which results in signals that are less noisy. There is no need for an additional shaft-angle sensor, nor is there any need to supply electrical excitation to a shaft-angle sensor. There is no need for mechanical brushes (which tend to act as sources of electrical noise). The underlying concept and electrical design are relatively simple. This circuit processes the back-electromagnetic force (back-emf) outputs of the two motor phases into a voltage directly proportional to the instantaneous rate (sign magnitude) of rotation of the shaft. The processing in this circuit effects a straightforward combination of mathematical operations leading to a final operation based on the well-known trigonometric identity (sin x)2 + (cos x)2 = 1 for any value of x. The principle of operation of this circuit is closely related to that of the tachometer circuit described in Tachometer Derived From Brushless Shaft-Angle Resolver (MFS-28845), NASA Tech Briefs, Vol. 19, No. 3 (March 1995), page 39. However, the present circuit is simpler in some respects because there is no need for sinusoidal excitation of shaftangle- resolver windings.

  14. Summary on Sensorless permanent magnet Brushless DC Motor Control Strategies

    OpenAIRE

    Li Hai Xia; Cao Yang

    2016-01-01

    This paper aims at discussing the development process and application of permanent magnet brushless DC motor. By referring to the related literatures, this thesis gives an overview of several common non-position sensor detection technologies, analyzing their strengths and weaknesses as well as a number of new and improved methods in practical applications. Besides, The application situation of the electric door with sensorless permanent magnet brushless DC motor was illustrated.

  15. Summary on Sensorless permanent magnet Brushless DC Motor Control Strategies

    Directory of Open Access Journals (Sweden)

    Li Hai Xia

    2016-01-01

    Full Text Available This paper aims at discussing the development process and application of permanent magnet brushless DC motor. By referring to the related literatures, this thesis gives an overview of several common non-position sensor detection technologies, analyzing their strengths and weaknesses as well as a number of new and improved methods in practical applications. Besides, The application situation of the electric door with sensorless permanent magnet brushless DC motor was illustrated.

  16. System For Characterizing Three-Phase Brushless dc Motors

    Science.gov (United States)

    Howard, David E.; Smith, Dennis A.

    1996-01-01

    System of electronic hardware and software developed to automate measurements and calculations needed to characterize electromechanical performances of three-phase brushless dc motors, associated shaft-angle sensors needed for commutation, and associated brushless tachometers. System quickly takes measurements on all three phases of motor, tachometer, and shaft-angle sensor simultaneously and processes measurements into performance data. Also useful in development and testing of motors with not only three phases but also two, four, or more phases.

  17. Controller for computer control of brushless dc motors. [automobile engines

    Science.gov (United States)

    Hieda, L. S. (Inventor)

    1981-01-01

    A motor speed and torque controller for brushless d.c. motors provides an unusually smooth torque control arrangement. The controller provides a means for controlling a current waveform in each winding of a brushless dc motor by synchronization of an excitation pulse train from a programmable oscillator. Sensing of torque for synchronization is provided by a light beam chopper mounted on the motor rotor shaft. Speed and duty cycle are independently controlled by controlling the frequency and pulse width output of the programmable oscillator. A means is also provided so that current transitions from one motor winding to another is effected without abrupt changes in output torque.

  18. Simulation of Brushless DC Motor using Direct Torque Control

    Directory of Open Access Journals (Sweden)

    Mrs.G. Kusuma

    2014-04-01

    Full Text Available This paper deals with modelling of three phases brushless dc motor with MATLAB/SIMULINK software BLDC motor have advantages according to brushless dc motor and induction motor’s. They have improve speed torque charactistics, high efficiency high transient response and small size. It approaches for reducing the torque ripples of BLDC motor using DTC, by using control technique’s ,but present work mainly concentrate on advanced method. The whole drive system is simulated based on the system devices, BLDC motor source inverter, space vector modulation.

  19. Improved Rotor Speed Brushless DC Motor using Fuzzy Controller

    OpenAIRE

    Jafar Mostafapour; Murtaza Farsadi; Ali Badri; Ebrahim Ogabi

    2016-01-01

    A brushless DC (BLDC) Motors have advantages over brushed, direct current (DC) motors and Induction motor (IM). They have better speed verses torque characteristics, high dynamic response, high efficiency, long operating life, noiseless operation, higher speed ranges, and rugged construction. Also, torque delivered to motor size is higher, making it useful in application where space and weight are critical factors. With these advantages BLDC motors find wide spread application in automotive a...

  20. Improved Rotor Speed Brushless DC Motor Using Fuzzy Controller

    OpenAIRE

    Jafar Mostafapour; Jafar Reshadat; Murtaza Farsadi

    2015-01-01

    A brushless DC (BLDC) Motors have advantages over brushed, Direct current (DC) Motors and , Induction motor (IM). They have better speed verses torque characteristics, high dynamic response, high efficiency, long operating life, noiseless operation, higher speed ranges, and rugged construction. Also, torque delivered to motor size is higher, making it useful in application where space and weight are critical factors. With these advantages BLDC motors find wide spread application in automotive...

  1. A brushless dc spin motor for momentum exchange altitude control

    Science.gov (United States)

    Stern, D.; Rosenlieb, J. W.

    1972-01-01

    Brushless dc spin motor is designed to use Hall effect probes as means of revolving rotor position and controlling motor winding currents. This results in 3 to 1 reduction in watt-hours required for wheel acceleration, a 2 to 1 reduction in power to run wheel, and a 10 to 1 reduction in the electronics size and weight.

  2. Brushless dc motors. [applications in non-space technology

    Science.gov (United States)

    1975-01-01

    Brushless dc motors were intensively developed and tested over several years before qualification as the prime movers for Apollo Spacecraft life support blowers, and for circulating oxygen in the lunar portable life support system. Knowledge gained through prototype development and critical testing has significantly influenced the technology employed, broadened markets and applications, and reduced the cost of present day motors.

  3. Steering Control of Wheeled Armored Vehicle with Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Considering the steering characters of one type of wheeled armored vehicle, a brushless direct current (DC) motor is adapted as the actuator for steering control. After investigating the known algorithms, one kind of algorithm, which combines the fuzzy logic control with the self-adapting PID control and the startup and pre-brake control, is put forward. Then a test-bed is constructed, and an experiment is conducted. The result of experiment confirms the validity of this algorithm in steering control of wheeled armored vehicle with brushless DC motor.

  4. Pulse-Width-Modulating Driver for Brushless dc Motor

    Science.gov (United States)

    Salomon, Phil M.

    1991-01-01

    High-current pulse-width-modulating driver for brushless dc motor features optical coupling of timing signals from low-current control circuitry to high-current motor-driving circuitry. Provides high electrical isolation of motor-power supply, helping to prevent fast, high-current motor-driving pulses from being coupled through power supplies into control circuitry, where they interfere with low-current control signals.

  5. Improved Rotor Speed Brushless DC Motor using Fuzzy Controller

    Directory of Open Access Journals (Sweden)

    Jafar Mostafapour

    2016-03-01

    Full Text Available A brushless DC (BLDC Motors have advantages over brushed, direct current (DC motors and Induction motor (IM. They have better speed verses torque characteristics, high dynamic response, high efficiency, long operating life, noiseless operation, higher speed ranges, and rugged construction. Also, torque delivered to motor size is higher, making it useful in application where space and weight are critical factors. With these advantages BLDC motors find wide spread application in automotive appliance, aerospace medical, and instrumentation and automation industries This paper can be seen as fuzzy controllers compared to PI control BLDC motor rotor speed has improved significantly and better result can be achieve.

  6. Improved Rotor Speed Brushless DC Motor Using Fuzzy Controller

    Directory of Open Access Journals (Sweden)

    Jafar Mostafapour

    2015-04-01

    Full Text Available A brushless DC (BLDC Motors have advantages over brushed, Direct current (DC Motors and , Induction motor (IM. They have better speed verses torque characteristics, high dynamic response, high efficiency, long operating life, noiseless operation, higher speed ranges, and rugged construction. Also, torque delivered to motor size is higher, making it useful in application where space and weight are critical factors. With these advantages BLDC motors find wide spread application in automotive appliance, aerospace medical, and instrumentation and automation industries This paper can be seen as fuzzy controllers compared to PI control BLDC motor rotor speed has improved significantly and beter result can be achieve.

  7. Hybrid Adaptive Observer for a Brushless DC Motor

    DEFF Research Database (Denmark)

    Niemczyk, Piotr; Porchez, Thomas; Bendtsen, Jan Dimon

    2008-01-01

    A novel hybrid adaptive observer for Brushless DC Motors (BLDCM) is presented. It uses two current measurements of BLDCM phases to estimate the angle and the speed of the rotor. The observer is designed on the basis of a hybrid model, which is also presented in this paper. The parameters of the o...

  8. Digital Signal Controller Based Digital Control of Brushless DC Motor

    Directory of Open Access Journals (Sweden)

    Anjana Elizabeth Thomas

    2013-07-01

    Full Text Available This paper presents the digital control of a brushless dc (BLDC motor using TMS320F2812 DSP controller and an EPROM. The real-time control of electrical motors is an application area that is not usually the domain of Digital Signal Processors. The TMS320F2812 has got dedicated modules for digital motor control. Control algorithms used for the control has been in TMS320F2812 DSP controller. The output of the driver is 6 independent PWM pulses that have to be given to the corresponding gates of the six MOSFETs power switches used in the three-phase bridge driving circuit whose output is given to the stator of the Brushless DC Motor. The commutation technique used in this work is the trapezoidal commutation owing to its excellent speed and current control and it has been implemented using an EPROM

  9. Controller for a High-Power, Brushless dc Motor

    Science.gov (United States)

    Fleming, David J.; Makdad, Terence A.

    1987-01-01

    Driving and braking torques controllable. Control circuit operates 7-kW, 45-lb-ft (61-N-m), three-phase, brushless dc motor in both motor and generator modes. In motor modes, energy from power source is pulse-width modulated to motor through modified "H-bridge" circuit, in generator mode, energy from motor is pulse-width modulated into bank of load resistors to provide variable braking torques. Circuit provides high-resolution torque control in both directions over wide range of speeds and torques. Tested successfully at bus voltages up to 200 Vdc and currents up to 45 A.

  10. Brushless DC Motor Control System Design Based on DSP2812

    Directory of Open Access Journals (Sweden)

    Wei Min

    2016-01-01

    Full Text Available By comparison various control methods currently for permanent magnet brushless DC motor, on the basis of motor principle analysis, a current smallest and most real-time all-digital rare earth permanent magnet brushless DC motor control system is designed. The high-speed digital signal processor DSP2812 is applied as the main control unit. The fuzzy PID control algorithm is used to control rectifier regulator and speed, which the speed and current is double closed loop in the system. The principle of control system, control strategy and software is analyzed in this paper. The system has some features such as less overshoot, rapid response speed, good performance of anti-jamming, simple structure, high control precision, flexible in changing control policies and so on. Validity of the design is verified by prototype test.

  11. Brushless DC motor Drive during Speed regulation with Current Controller

    Directory of Open Access Journals (Sweden)

    Bhikshalu Manchala

    2015-04-01

    Full Text Available Brushless DC Motor (BLDC is one of the best electrical drives that have increasing popularity, due to their high efficiency, reliability, good dynamic response and very low maintenance. Due to the increasing demand for compact & reliable motors and the evolution of low cost power semiconductor switches and permanent magnet (PM materials, brushless DC motors become popular in every application from home appliances to aerospace industry. The conventional techniques for controlling the stator phase current in a brushless DC drive are practically effective in low speed and cannot reduce the commutation torque ripple in high speed range. This paper presents the PI controller for speed control of BLDC motor. The output of the PI controllers is summed and is given as the input to the current controller. The BLDC motor is fed from the inverter where the rotor position and current controller is the input. The complete model of the proposed drive system is developed and simulated using MATLAB/Simulink software. The operation principle of using component is analysed and the simulation results are presented in this to verify the theoretical analysis.

  12. Optimal brushless DC motor design using genetic algorithms

    Energy Technology Data Exchange (ETDEWEB)

    Rahideh, A. [Department of Engineering, Queen Mary, University of London, London E1 4NS (United Kingdom); Korakianitis, T., E-mail: korakianitis@alum.mit.ed [Department of Engineering, Queen Mary, University of London, London E1 4NS (United Kingdom); Ruiz, P. [Department of Engineering, Queen Mary, University of London, London E1 4NS (United Kingdom); Keeble, T.; Rothman, M.T. [Cardiac Research and Development, Barts and the London NHS Trust, The London Chest Hospital, London E2 9JX (United Kingdom)

    2010-11-15

    This paper presents a method for the optimal design of a slotless permanent magnet brushless DC (BLDC) motor with surface mounted magnets using a genetic algorithm. Characteristics of the motor are expressed as functions of motor geometries. The objective function is a combination of losses, volume and cost to be minimized simultaneously. Electrical and mechanical requirements (i.e. voltage, torque and speed) and other limitations (e.g. upper and lower limits of the motor geometries) are cast into constraints of the optimization problem. One sample case is used to illustrate the design and optimization technique.

  13. Optimal brushless DC motor design using genetic algorithms

    Science.gov (United States)

    Rahideh, A.; Korakianitis, T.; Ruiz, P.; Keeble, T.; Rothman, M. T.

    2010-11-01

    This paper presents a method for the optimal design of a slotless permanent magnet brushless DC (BLDC) motor with surface mounted magnets using a genetic algorithm. Characteristics of the motor are expressed as functions of motor geometries. The objective function is a combination of losses, volume and cost to be minimized simultaneously. Electrical and mechanical requirements (i.e. voltage, torque and speed) and other limitations (e.g. upper and lower limits of the motor geometries) are cast into constraints of the optimization problem. One sample case is used to illustrate the design and optimization technique.

  14. Accurate torque-speed performance prediction for brushless dc motors

    Science.gov (United States)

    Gipper, Patrick D.

    Desirable characteristics of the brushless dc motor (BLDCM) have resulted in their application for electrohydrostatic (EH) and electromechanical (EM) actuation systems. But to effectively apply the BLDCM requires accurate prediction of performance. The minimum necessary performance characteristics are motor torque versus speed, peak and average supply current and efficiency. BLDCM nonlinear simulation software specifically adapted for torque-speed prediction is presented. The capability of the software to quickly and accurately predict performance has been verified on fractional to integral HP motor sizes, and is presented. Additionally, the capability of torque-speed prediction with commutation angle advance is demonstrated.

  15. The analysis and design of brushless D.C. motors

    Science.gov (United States)

    Benarous, Maamar

    In modern computer systems electrical drives are used to rotate hard discs. These motors require special torque- speed characteristics. The speed of the hard disc must be constant in order for the unit to function correctly. One type of drive, which is used for hard discs is the brushless-DC-motor. This machine has permanent magnet excitation and a polyphase armature winding. It therefore takes the form of a synchronous machine, and in order to be brushless the armature winding is stationary and the excitation rotates. To run at adjustable speed a variable frequency supply is required. In the brushless D.C form the inverter output is phase locked to the rotor position, it is therefore electro-magnetically similar to the D.C machine where fixed brushes determine the frequency and phase of the current in the armature winding. In order to perform the phase lock action signals measuring the rotor position are needed. In one form of machine Hall effect probes detect the position of the rotor poles, in a second given that the rotor is in motion the induced back emf is used. Experimentally it is convenient to replace these magnet systems with a photo- transistor and rotating shutter system and this was the approach used in this thesis. The objective of this research is to investigate different aspects of this motor. The generation, measurement, and placement of signals is described and illustrated, and the design and construction of an inverter supply circuit is described. Both 2D and 3D finite element analysis is used in order to find the machine parameters as well as cogging torque analysis, using the concept of permanent magnet magnetisation characteristics. It is shown that the cogging can be reduced for certain types of magnetisation. The finite element analysis is taken further by connecting the drive circuit needed to run the machine into the finite element mesh, the machine parameters are defined using this method. The close agreement between the simulation and

  16. Pulse Width Modulator Controller Design for a Brushless DC Motor Position Servo.

    Science.gov (United States)

    1987-06-01

    performance. This thesis involves computer aided design of a functionally robust brushless dc motor position controller using pulse width modulation...Recent interest in positioning cruise missile flight control surfaces using electromechanical actuation has prompted a detailed study of brushless dc ... motor performance in such an application. While the superior response characteristics of these electronically commutated motors are particularly well

  17. Control and Diagnostic Model of Brushless Dc Motor

    Science.gov (United States)

    Abramov, Ivan V.; Nikitin, Yury R.; Abramov, Andrei I.; Sosnovich, Ella V.; Božek, Pavol

    2014-09-01

    A simulation model of brushless DC motor (BLDC) control and diagnostics is considered. The model has been developed using a freeware complex "Modeling in technical devices". Faults and diagnostic parameters of BLDC are analyzed. A logicallinguistic diagnostic model of BLDC has been developed on basis of fuzzy logic. The calculated rules determine dependence of technical condition on diagnostic parameters, their trends and utilized lifetime of BLDC. Experimental results of BLDC technical condition diagnostics are discussed. It is shown that in the course of BLDC degradation the motor condition change depends on diagnostic parameter values

  18. The Model of Brushless Dc Motor Drive

    Directory of Open Access Journals (Sweden)

    Aurelijus Pitrėnas

    2013-05-01

    Full Text Available The research considered the operation, control, mathematical and simulation models of BLDC motor. A simplified idealized simulation model was designed and tested using Matlab Simulink software package. The simulation model uses Hall effect sensor signals for determining the rotor position. Simulation was done for Maxon, EC-4 pole 22 BL A series motor. The obtained model testing results deviate from the data supplied by the motor manufacturer by as little as 0.2–10.6%; consequently, the implemented model is suitable for BLDC motor control study and research.Article in Lithuanian

  19. James Webb Space Telescope Deployment Brushless DC Motor Characteristics Analysis

    Science.gov (United States)

    Tran, Ahn N.

    2016-01-01

    A DC motor's performance is usually characterized by a series of tests, which are conducted by pass/fail criteria. In most cases, these tests are adequate to address the performance characteristics under environmental and loading effects with some uncertainties and decent power/torque margins. However, if the motor performance requirement is very stringent, a better understanding of the motor characteristics is required. The purpose of this paper is to establish a standard way to extract the torque components of the brushless motor and gear box characteristics of a high gear ratio geared motor from the composite geared motor testing and motor parameter measurement. These torque components include motor magnetic detent torque, Coulomb torque, viscous torque, windage torque, and gear tooth sliding torque. The Aerospace Corp bearing torque model and MPB torque models are used to predict the Coulomb torque of the motor rotor bearings and to model the viscous components. Gear tooth sliding friction torque is derived from the dynamo geared motor test data. With these torque data, the geared motor mechanical efficiency can be estimated and provide the overall performance of the geared motor versus several motor operating parameters such as speed, temperature, applied current, and transmitted power.

  20. Hall effect encoding of brushless dc motors

    Science.gov (United States)

    Berard, C. A.; Furia, T. J.; Goldberg, E. A.; Greene, R. C.

    1970-01-01

    Encoding mechanism integral to the motor and using the permanent magnets embedded in the rotor eliminates the need for external devices to encode information relating the position and velocity of the rotating member.

  1. Brushless DC Motor Speed Control Based on Emotional Intelligent Controller

    Directory of Open Access Journals (Sweden)

    Gholamreza ArabMarkadeh

    2014-03-01

    Full Text Available This paper presents an emotional controller for brushless DC motor (BLDC drive. The proposed controller is called brain emotional learning based intelligent controller (BELBIC. The utilization of the new controller is based on the emotion processing mechanism in brain. This intelligent control is inspired by the limbic system of mammalian brain, especially amygdala. The controller is successfully implemented in simulation using MATLAB software, brushless dc drive with trapezoidal back-emf. In this work, a novel and simple implementation of BLDC motor drive system is achieved by using the intelligent controller, which controls the motor speed accurately. This emotional intelligent controller has simple structure with high auto learning feature. Simulation results show that both accurate steady state and fast transient speed responses can be achieved in wide range of speed from 20 to 300 [rpm]. Moreover, to evaluate this emotional controller, the performance of the proposed control scheme is compared with both Fuzzy Logic (FL and PID controllers, in different conditions. This indicates proper operating in comparison to the FLC and PID controllers. And also shows excellent promise for industrial scale utilization.

  2. Low speed phaselock speed control system. [for brushless dc motor

    Science.gov (United States)

    Fulcher, R. W.; Sudey, J. (Inventor)

    1975-01-01

    A motor speed control system for an electronically commutated brushless dc motor is provided which includes a phaselock loop with bidirectional torque control for locking the frequency output of a high density encoder, responsive to actual speed conditions, to a reference frequency signal, corresponding to the desired speed. The system includes a phase comparator, which produces an output in accordance with the difference in phase between the reference and encoder frequency signals, and an integrator-digital-to-analog converter unit, which converts the comparator output into an analog error signal voltage. Compensation circuitry, including a biasing means, is provided to convert the analog error signal voltage to a bidirectional error signal voltage which is utilized by an absolute value amplifier, rotational decoder, power amplifier-commutators, and an arrangement of commutation circuitry.

  3. Influence of PWM Modes on Commutation Torque Ripples in Sensorless Brushless DC Motor Control System

    Institute of Scientific and Technical Information of China (English)

    ZHANGXiang-jun; CHENBo-shi; 等

    2001-01-01

    This paper introduces four PWM modes used in the sensorless brushless DC motor control system,analyzes their different influences on the commutation torque ripple in detail,and selects the best PWM mode in four given types to reduce commutation torque ripple of Brushless OC( BLDC) motors,Simulation and experimental results show that the selection is correct and practical.

  4. Tuning of PID Controller for A Linear Brushless DC Motor using Swarm Intelligence Technique

    Directory of Open Access Journals (Sweden)

    Pooja Sharma,

    2014-05-01

    Full Text Available An Optimal Design of PID Controller is proposed in this paper. The Methodology of PSO Algorithm is utilized to search the optimal parameters of Proportional Integral Derivative (PID Controller for BLDC Motor. PSO is an Evolutionary Optimization Technique. A Linear Brushless DC Motors are known for higher efficiency and lower maintenance. The Brushless DC Motor is modeled in Simulink & tuning of PID controller using PSO is implemented in MATLAB. This Method was more efficient for Step Response Characteristics.

  5. SIMULATION AND IMPLEMENTATION OF CURRENT CONTROL OF BRUSHLESS DC MOTOR BASED ON A COMMON DC SIGNAL

    Directory of Open Access Journals (Sweden)

    J.Karthikeyan

    2010-06-01

    Full Text Available The objective of this project is to build a simple current controlled modulation technique for brushless dc motors. In electric traction and most other applications, a wide range of speed and torque control of the electric motor is required. The dc machine fulfills these requirements, but the dc machine requires constant maintenance. But the brushless permanent magnet motors do not have brushes and so they require less maintenance only. Brushless dc motors are widely used in applications which require wide range of speed and torque control because of its low inertia, fast response, high reliability and maintenance free. This current controlled technique is based on the generation of quasi- square wave currents using only one controller for the three phases. The current control strategy uses a triangular carrier for the power transistors which is simpler and more accuratethan any other options. The advantages of this technique are: a The stator currents are completely characterized by their maximum amplitude , b The three phases are controlled with the same dc component , and then the phase currents are kept at exactly the same magnitude I max, c The dc link current measurement is not required .d phase currents are kept balanced and phase over currents are eliminated.

  6. A new surface-inset, permanent-magnet, brushless dc motor drive for electric vehicles

    OpenAIRE

    Chau, KT; J. Gan; Chan, CC; Jiang, JZ

    2000-01-01

    A new five-phase, surface-inset, permanent-magnet (PM), brushless dc motor drive is proposed in this paper. The motor drive has advantages of both the PM brushless dc motor drive and the dc series motor drive. The originlity is that the air-gap flux of the motor is generated by both the PM excitation and the specially controlled stator currents (two particular phases) under the same PM pole. The motor configuration and principle of operation are so unusual that the magnetic field distribution...

  7. Brushless DC Motor Drive during Speed Regulation with Artificial Neural Network Controller

    OpenAIRE

    Sakshi Solanki

    2016-01-01

    Brushless DC motor, at this moment is extensively used being many industrial functions due to the different features like high efficiency and dynamic response and high speed range. This paper is proposing a technology named as Artificial Neural Network controller to control the speed of the brushless DC motor. Here the paper contributes an analysis of performance Artificial Neural Network controller. Because it is difficult to handle by the use of conventional PID controller as BL...

  8. Brushless DC electric motor application in environment CH4 sensor

    Science.gov (United States)

    Drozd, Jakub; Duk, Mariusz; Borecki, Michał

    2016-09-01

    The work includes using a brushless direct current motor ventilator as a machine which fills a container where methane sensor is researched. The main issue is to choose the best controlling method and implement it to self-made driver of the motor.

  9. A Hybrid Model of a Brushless DC Motor

    DEFF Research Database (Denmark)

    Bendtsen, Jan Dimon; Hansen, Hans Brink; Kallesøe, Carsten Skovmose

    2007-01-01

    This paper presents a novel approach to modeling of a Brush-Less Direct Current Motor (BLDCM) driven by an inverter using hybrid systems theory. Hybrid systems combine continuous and discrete (event-based) dynamics, which is exactly the case in an inverter-driven BLDCM. The model presented in thi...

  10. Research of subdivision driving technology for brushless DC motors in optical fiber positioning

    Science.gov (United States)

    Kan, Yi; Gu, Yonggang; Zhu, Ye; Zhai, Chao

    2016-07-01

    In fiber spectroscopic telescopes, optical fiber positioning units are used to position thousands of fibers on the focal plane quickly and precisely. Stepper motors are used in existing units, however, it has some inherent deficiencies, such as serious heating and low efficiency. In this work, the universally adopted subdivision driving technology for stepper motors is transplanted to brushless DC motors. It keeps the advantages of stepper motors such as high positioning accuracy and resolution, while overcomes the disadvantages mentioned above. Thus, this research mainly focuses on develop a novel subdivision driving technology for brushless DC motor. By the proving of experiments of online debug and subdivision speed and position, the proposed brushless DC motor subdivision technology can achieve the expected functions.

  11. Dynamic modeling of brushless dc motors for aerospace actuation

    Science.gov (United States)

    Demerdash, N. A.; Nehl, T. W.

    1980-11-01

    A discrete time model for simulation of the dynamics of samarium cobalt-type permanent magnet brushless dc machines is presented. The simulation model includes modeling of the interaction between these machines and their attached power conditioners. These are transistorized conditioner units. This model is part of an overall discrete-time analysis of the dynamic performance of electromechanical actuators, which was conducted as part of prototype development of such actuators studied and built for NASA-Johnson Space Center as a prospective alternative to hydraulic actuators presently used in shuttle orbiter applications. The resulting numerical simulations of the various machine and power conditioner current and voltage waveforms gave excellent correlation to the actual waveforms collected from actual hardware experimental testing. These results, numerical and experimental, are presented here for machine motoring, regeneration and dynamic braking modes. Application of the resulting model to the determination of machine current and torque profiles during closed-loop actuator operation were also analyzed and the results are given here. These results are given in light of an overall view of the actuator system components. The applicability of this method of analysis to design optimization and trouble-shooting in such prototype development is also discussed in light of the results at hand.

  12. Dynamic modeling of brushless dc motors for aerospace actuation

    Science.gov (United States)

    Demerdash, N. A.; Nehl, T. W.

    1980-01-01

    A discrete time model for simulation of the dynamics of samarium cobalt-type permanent magnet brushless dc machines is presented. The simulation model includes modeling of the interaction between these machines and their attached power conditioners. These are transistorized conditioner units. This model is part of an overall discrete-time analysis of the dynamic performance of electromechanical actuators, which was conducted as part of prototype development of such actuators studied and built for NASA-Johnson Space Center as a prospective alternative to hydraulic actuators presently used in shuttle orbiter applications. The resulting numerical simulations of the various machine and power conditioner current and voltage waveforms gave excellent correlation to the actual waveforms collected from actual hardware experimental testing. These results, numerical and experimental, are presented here for machine motoring, regeneration and dynamic braking modes. Application of the resulting model to the determination of machine current and torque profiles during closed-loop actuator operation were also analyzed and the results are given here. These results are given in light of an overall view of the actuator system components. The applicability of this method of analysis to design optimization and trouble-shooting in such prototype development is also discussed in light of the results at hand.

  13. Sensorless Control of PM Synchronous Motors and Brushless DC Motors

    DEFF Research Database (Denmark)

    Montesinos, D.; Galceran, Samuel; Blaabjerg, Frede

    2005-01-01

    This paper provides a review of the literature addressing sensorless operation methods of PM brushless machines. The methods explained are state-of-the-art of open and closed loop control strategies. The closed loop review includes those methods based on voltage and current measurements, those me...

  14. A novel method for simulation of brushless DC motor servo-control system based on MATLAB

    Science.gov (United States)

    Tao, Keyan; Yan, Yingmin

    2006-11-01

    This paper provides a research about the simulation of brush-less DC motor (BLDCM) servo control system. Based on the mathematical model of Brush-less DC motor (BLDCM), built the system simulation model with the MATLAB software. When the system model is made, the isolated functional blocks, such as BLDCM block, the rotor's position detection block, change-phase logic block etc. have been modeled. By the organic combination of these blocks, the model of BLDCM can be established easily. The reasonability and validity have been testified by the simulation results and this novel method offers a new thought way for designing and debugging actual motors.

  15. Numerical and Experimental Investigation of Heat Flow in Permanent Magnet Brushless DC Hub Motor

    DEFF Research Database (Denmark)

    Fasil, Muhammed; Plesner, Daniel; Walther, Jens Honore

    2014-01-01

    This paper investigates the heat dissipation in the hub motor of an electric two-wheeler using lumped parameter (LP), finite element (FE) and computational fluid dynamic (CFD) models. The motor uses external rotor permanent magnet brushless DC topology and nearly all of its losses are generated i...

  16. The elements of synthesis of brushless d.c. motor with permanent magnets

    OpenAIRE

    Ткачук, Василь Іванович; Біляковський, Ігор Євгенович

    2010-01-01

    The elements of synthesis of Brushless d.c. Motor with permanent magnets on a rotor and pseudo by U-similar stator is offered. The mathematical model of project calculation of main geometrical dimensions of such Motor is based on these elements.

  17. Design and use of brushless dc motor without detent torque

    Science.gov (United States)

    Wavre, N.

    1990-03-01

    Two applications of motors which cannot accept a residual detent torque due to the rotor magnets are presented. The first application concerns the joint mechanism of the Synchronous Meteorological Satellite/HERA project. The brushless torque motor drives a reversible harmonic drive with a high gear ratio of 500. The motor is designed to produce a stall torque of 3.0 Nm with a total imput power of 30 W for a total weight of 1.5 kg, with a no load speed of 500 rpm. The second application concerns the driving mechanism of an infrared sensor. The need to take all geometrical and magnetic parameters into consideration in designing space mechanisms is stressed.

  18. Analysis of Commutation Torque Ripple Minimization for Brushless DC Motor Based on SEPIC Converter

    OpenAIRE

    R.Jogarao; Mouliswararao.Reddy; G. Ashok

    2016-01-01

    Brushless DC Motors (BLDCM) are widely used in automated industrial applications like Computer Numerical Control (CNC) machinery, aerospace applications and in the field of robotics.But it still suffers from commutation torque which mainly depends on speed and transient line commutation interval. BLDC MOTOR torque ripple causes increased acoustic noise and undesirable speed fluctuation. This paper presents a new circuit topology and dc link voltage current in the control strategy to keep inco...

  19. System and Method for Determining Rate of Rotation Using Brushless DC Motor

    Science.gov (United States)

    Howard, David E. (Inventor); Smith, Dennis A. (Inventor)

    2000-01-01

    A system and method are provided for measuring rate of rotation. A brushless DC motor is rotated and produces a back electromagnetic force (emf) on each winding thereof. Each winding's back-emf is squared. The squared outputs associated with each winding are combined, with the square root being taken of such combination, to produce a DC output proportional only to the rate of rotation of the motor's shaft.

  20. Rate of rotation measurement using back-EMFS associated with windings of a brushless DC motor

    Science.gov (United States)

    Howard, David E. (Inventor)

    2000-01-01

    A system and method are provided for measuring rate of rotation. A brushless DC motor is rotated and produces a back electromagnetic force (emf) on each winding thereof. Each winding's back-emf is integrated and multiplied by the back-emf associated with an adjacent winding. The multiplied outputs associated with each winding are combined to produce a directionally sensitive DC output proportional only to the rate of rotation of the motor's shaft.

  1. Analysis of torque-current characteristic of brushless DC motor driven by three-phase H-bridge

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Presents the simulation and analysis of the steady state characteristic of a brushless DC motor studies the torque-current characteristic of the motor as well and discusses the design of a current-measure circuit for torque controlling.

  2. Anti-control of chaos of single time-scale brushless DC motor.

    Science.gov (United States)

    Ge, Zheng-Ming; Chang, Ching-Ming; Chen, Yen-Sheng

    2006-09-15

    Anti-control of chaos of single time-scale brushless DC motors is studied in this paper. In order to analyse a variety of periodic and chaotic phenomena, we employ several numerical techniques such as phase portraits, bifurcation diagrams and Lyapunov exponents. Anti-control of chaos can be achieved by adding an external constant term or an external periodic term.

  3. Improved Analytical Model of a Permanent-Magnet Brushless DC Motor

    NARCIS (Netherlands)

    Kumar, P.; Bauer, P.

    2008-01-01

    In this paper, we develop a comprehensive model of a permanent-magnet brushless DC (BLDC) motor. An analytical model for determining instantaneous air-gap field density is developed. This instantaneous field distribution can be further used to determine the cogging torque, induced back electromotive

  4. The design and analysis of a novel brushless dc linear motor

    Science.gov (United States)

    Basak, A.; Filho, A. F. Flores

    1994-05-01

    A novel brushless dc linear motor was designed, with two armature cores and seven high energy product magnets. It was then built and tested. Both the design and the analysis were carried out assuming a linear magnetic circuit. The design procedure and the test results are presented and discussed in this paper. The new motor can also be used as a slotless linear stepping motor.

  5. Technology of Performance Improvement Brushless DC Motors and Inverter for Air conditioning

    Science.gov (United States)

    Baba, Kazuhiko; Matsuoka, Atsushi; Shinomoto, Yosuke; Arisawa, Koichi

    High efficiency motors are demanded because of the viewpoint of environmental preservation. It is necessary to develop the technology of the energy conservation that can be achieved at low cost so that we may expand high efficiency motors onto the world. In this paper, the current status of the brushless DC motors and invertors to satisfy high efficiency, small size, high power and low cost is reviewed.

  6. Development of a highly efficient brushless dc motor utilizing both radial and axial air gaps

    Science.gov (United States)

    Kang, K. J.; Jang, G. H.; Sung, S. J.; Chang, J. H.

    2012-04-01

    This research proposes an effective structure for a brushless dc motor utilizing both radial and axial air gaps. The proposed motor generates torque in both the radial and axial air gaps, while the conventional motor generates torque only in the radial air gap. The proposed motor was optimized to minimize the electromagnetic loss of the motor to increase the effective air gap length and fill-factor of the coil while decreasing the saturation of the core at the same time. The electromagnetic loss was reduced by 35% in comparison with a conventional motor.

  7. Optimal PID control of a brushless DC motor using PSO and BF techniques

    Directory of Open Access Journals (Sweden)

    H.E.A. Ibrahim

    2014-06-01

    Full Text Available This paper presents a Particle Swarm Optimization (PSO technique and bacterial foraging (BF technique for determining the optimal parameters of (PID controller for speed control of a brushless DC motor (BLDC where the (BLDC motor is modeled in simulink in Matlab. The proposed technique was more efficient in improving the step response characteristics as well as reducing the steady-state error, rise time, settling time and maximum overshoot.

  8. Simulation of Outer Rotor Permanent Magnet Brushless DC Motor Using Finite Element Method for Torque Improvement

    OpenAIRE

    Uma Devi Kumaravelu; Sanavullah Mohamed Yakub

    2012-01-01

    A method of simulation and modeling outer rotor permanent magnet brushless DC (ORPMBLDC) motor under dynamic conditions using finite element method by FEMM 4.2 software package is presented. In the proposed simulation, the torque developed at various positions of the rotor, under a complete cycle of excitation of the stator, is analysed. A novel method of sinusoidal excitation is proposed to enhance the overall torque development of ORPMBLDC motor.

  9. Simulation of Outer Rotor Permanent Magnet Brushless DC Motor Using Finite Element Method for Torque Improvement

    Directory of Open Access Journals (Sweden)

    Uma Devi Kumaravelu

    2012-01-01

    Full Text Available A method of simulation and modeling outer rotor permanent magnet brushless DC (ORPMBLDC motor under dynamic conditions using finite element method by FEMM 4.2 software package is presented. In the proposed simulation, the torque developed at various positions of the rotor, under a complete cycle of excitation of the stator, is analysed. A novel method of sinusoidal excitation is proposed to enhance the overall torque development of ORPMBLDC motor.

  10. Electric compressor with high-speed brushless DC motor; E-Kompressor mit buerstenlosem Gleichstrommotor

    Energy Technology Data Exchange (ETDEWEB)

    Biwersi, Stephan; Tavernier, Stephan; Equoy, Samuel [Moving Magnet Technologies (MMT), Besancon (France)

    2012-12-01

    Moving Magnet Technologies (MMT) from Besancon in France has developed a highly efficient brushless DC motor that is especially suitable for use in electrically supported compressors. It helps to further minimise so-called turbo lag in supercharged internal combustion engines. The following report presents technical details of the electric motor and practical results in combination with an electrically driven compressor. MMT was supported by Swissauto in designing the supercharging system.

  11. Speed Control Analysis of Brushless DC Motor Based on Maximum Amplitude DC Current Feedback

    Directory of Open Access Journals (Sweden)

    Hassan M.A.A.

    2014-07-01

    Full Text Available This paper describes an approach to develop accurate and simple current controlled modulation technique for brushless DC (BLDC motor drive. The approach is applied to control phase current based on generation of quasi-square wave current by using only one current controller for the three phases. Unlike the vector control method which is complicated to be implemented, this simple current modulation technique presents advantages such as phase currents are kept in balance and the current is controlled through only one dc signal which represent maximum amplitude value of trapezoidal current (Imax. This technique is performed with Proportional Integral (PI control algorithm and triangular carrier comparison method to generate Pulse Width Modulation (PWM signal. In addition, the PI speed controller is incorporated with the current controller to perform desirable speed operation of non-overshoot response. The performance and functionality of the BLDC motor driver are verified via simulation by using MATLAB/SIMULINK. The simulation results show the developed control system performs desirable speed operation of non-overshoot and good current waveforms.

  12. A microcontroller-based sensorless brushless DC (BLDC) motor drive for areomodelling

    Science.gov (United States)

    Cao, Long-han; Liu, Tao; Li, Rui; Wu, Fan

    2007-12-01

    A novel approach to back-EMF detection of sensorless brushless DC motor drive systems was proposed. Theoretical analysis of back-EMF sensing is presented, and indicates the back-EMF signal can be extracted for each floating phase whether the PWM is on or off time. As a result, the proposed method rejects the high frequency switching noise and no filtering. Moreover, it provides a highly accurate zero crossing point. This proposed sensing scheme is implemented into a microcontroller for a sensorless BLDC motor. The microcontroller has been successfully applied to the aeromodelling motor. The applied results verify the theoretical analysis and demonstrate that the microcontroller provide a good motor performance.

  13. High temperature brushless DC motor system and its operation mode control

    Institute of Scientific and Technical Information of China (English)

    邹继斌; 胡建辉; 徐永向

    2001-01-01

    The high temperature ( 175 ℃ ) operation of a motor spells out special requirements for control algorithms, materials and elements. The stability of motor characteristic is guaranteed by the digital control strategy. Constant velocity operation is achieved by phase-locked loop ( PLL), and constant power operation is achieved by a current-restricting circuit. A motor for constant speed and constant power operation has been built and the speed control system is tuned by MATLAB simulation. Experimental and simulation results for operation mode control of brushless DC motor are presented.

  14. Estimation parameters and black box model of a brushless DC motor

    Directory of Open Access Journals (Sweden)

    José A. Becerra-Vargas

    2014-08-01

    Full Text Available The modeling of a process or a plant is vital for the design of its control system, since it allows predicting its dynamic and behavior under different circumstances, inputs, disturbances and noise. The main objective of this work is to identify which model is best for a permanent magnet brushless DC specific motor. For this, the mathematical model of a DC motor brushless PW16D, manufactured by Golden Motor, is presented and compared with its black box model; both are derived from experimental data. These data, the average applied voltage and the angular velocity, are acquired by a data acquisition card and imported to the computer. The constants of the mathematical model are estimated by a curve fitting algorithm based on non-linear least squares and pattern search using computational tool. To estimate the mathematical model constants by non-linear least square and search pattern, a goodness of fit of 84.88% and 80.48% respectively was obtained. The goodness of fit obtained by the black box model was 87.72%. The mathematical model presented slightly lower goodness of fit, but allowed to analyze the behavior of variables of interest such as the power consumption and the torque applied to the motor. Because of this, it is concluded that the mathematical model obtained by experimental data of the brushless motor PW16D, is better than its black box model.

  15. Analysis of a Permanent-Magnet Brushless DC Motor with Fixed Dimensions

    Science.gov (United States)

    Brakanskis, Uldis; Dirba, Janis; Kukjane, Ludmila; Drava, Viesturs

    2010-01-01

    The purpose of this paper is to describe the analysis of a permanent-magnet brushless DC motor with fixed outer diameter and active zone length. The influence of air gap, material of permanent magnets and their size on the magnetic flux density of the machine and magnetic flux is analyzed. The work presents the calculations of two programs, the comparison of the results and the most suitable combination of factors that has been found.

  16. On-Line Tracking Controller for Brushless DC Motor Drives Using Artificial Neural Networks

    Science.gov (United States)

    Rubaai, Ahmed

    1996-01-01

    A real-time control architecture is developed for time-varying nonlinear brushless dc motors operating in a high performance drives environment. The developed control architecture possesses the capabilities of simultaneous on-line identification and control. The dynamics of the motor are modeled on-line and controlled using an artificial neural network, as the system runs. The control architecture combines the experience and dependability of adaptive tracking systems with potential and promise of the neural computing technology. The sensitivity of real-time controller to parametric changes that occur during training is investigated. Such changes are usually manifested by rapid changes in the load of the brushless motor drives. This sudden change in the external load is simulated for the sigmoidal and sinusoidal reference tracks. The ability of the neuro-controller to maintain reasonable tracking accuracy in the presence of external noise is also verified for a number of desired reference trajectories.

  17. Comparison Of Selected Characteristics Of Brushless DC Motors For Optoelectronic Sensors Positioning

    Directory of Open Access Journals (Sweden)

    Zieleźnicki Jan

    2015-08-01

    Full Text Available Thanks to their advantageous properties such as higher durability, reliability and wide scope of speed achievable with a given load, brushless DC motors are often used in Line-of-Sight stabilization systems of the optoelectronic aircraft gimbals. Since there are many sub-types and configurations of such motors, choosing the optimal structure is not a trivial issue. This paper presents the selection process of a motor with properties that would make it ideal for use in an optoelectronic gimbal drive.

  18. Analysis of Commutation Torque Ripple Minimization for Brushless DC Motor Based on SEPIC Converter

    Directory of Open Access Journals (Sweden)

    R.Jogarao

    2016-11-01

    Full Text Available Brushless DC Motors (BLDCM are widely used in automated industrial applications like Computer Numerical Control (CNC machinery, aerospace applications and in the field of robotics.But it still suffers from commutation torque which mainly depends on speed and transient line commutation interval. BLDC MOTOR torque ripple causes increased acoustic noise and undesirable speed fluctuation. This paper presents a new circuit topology and dc link voltage current in the control strategy to keep incoming and outgoing phase currents changing at the same rate during commutation. In this paper dc-dc single ended primary inductor converter (SEPIC a switch selection circuit are employed in front of inverter. In order to obtain the desired commutation voltage resulting in reduced commutation torque ripple. Compared with simulation result conventional system and proposed method can obtain desired voltage much faster and minimize commutation torque ripple more efficiently.

  19. Numerical analysis of the electromechanically coupled magnetic field in brushless DC motors

    Science.gov (United States)

    Jang, G. H.; Chang, J. H.

    2001-05-01

    This paper presents a numerical method to solve the electromechanically coupled equations in a brushless DC (BLDC) motor, i.e. Maxwell equation, voltage equation and Newton's equations by introducing the nonlinear finite element analysis and the time stepping method. It also investigates the coupling effect of the eccentric motion of a rotor on the characteristics of the magnetic force and the resulting motion of a BLDC motor by analyzing the free response and Fourier transform of the excitation force and the resulting displacement.

  20. Numerical analysis of the electromechanically coupled magnetic field in brushless DC motors

    Energy Technology Data Exchange (ETDEWEB)

    Jang, G.H. E-mail: ghjang@email.hanyang.ac.kr; Chang, J.H

    2001-05-01

    This paper presents a numerical method to solve the electromechanically coupled equations in a brushless DC (BLDC) motor, i.e. Maxwell equation, voltage equation and Newton's equations by introducing the nonlinear finite element analysis and the time stepping method. It also investigates the coupling effect of the eccentric motion of a rotor on the characteristics of the magnetic force and the resulting motion of a BLDC motor by analyzing the free response and Fourier transform of the excitation force and the resulting displacement.

  1. POSITION CONTROL OF BRUSHLESS DC MOTOR BASED ON DIGITAL SIGNAL PROCESSING

    Directory of Open Access Journals (Sweden)

    Çetin GENÇER

    2006-01-01

    Full Text Available Brushless DC Motors (BLDC have been used widely high performance control systems which are depended on to development of power electronic and control technology. In these motors to fed commutated supply, the control of position without oscilation has been required. In this study, position control of BLDC with digital signal processing has been implemented by a proportional-derivative (PD controller because of its simple structure. It has been seen that the controller which is proposed from simulation and experimental studies, has a quick dynamic responce with nonoscillation.

  2. Novel Position and Speed Estimator for PM Single Phase Brushless D.C. Motor Drives

    DEFF Research Database (Denmark)

    Lepure, Liviu I.; Andreescu, Gheorghe-Daniel; Iles, Doris;

    2010-01-01

    A novel position and speed estimator for single phase permanent magnet brushless d.c. (PMBLDC) motor drives, based on flux integration and prior knowledge of ΨPM (θ) is proposed here and an adequate correction algorithm is adopted in order to increase the robustness to noise and to reduce...... the sensitivity to accuracy of flux linkage estimation. A speed and current close loop control is employed based on the Hall signal and the motor is controlled at different speeds in order to validate the proposed estimation algorithm with satisfying results. The position correction effect is analyzed...

  3. Permanent magnet brushless DC motor drives and controls

    CERN Document Server

    Xia, Chang-liang

    2012-01-01

    An advanced introduction to the simulation and hardware implementation of BLDC motor drives A thorough reference on the simulation and hardware implementation of BLDC motor drives, this book covers recent advances in the control of BLDC motor drives, including intelligent control, sensorless control, torque ripple reduction and hardware implementation. With the guidance of the expert author team, readers will understand the principle, modelling, design and control of BLDC motor drives. The advanced control methods and new achievements of BLDC motor drives, of interest to more a

  4. 无刷直流电动机的DSP控制%DSP Control of Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    王越; 甄长飞

    2012-01-01

    According to the characteristics of the brushless dc motor, and the demand in practical application, design solved the rapid control problem of brushless dc motor. Using the TMS320LF2407A of the TI company as control core, and PWM and PI, we designed control circuit and control procedures for brushless dc motor in order to achieve the actual effect.%为解决无刷直流电动机的快速控制问题,提出了无刷直流电动机的DSP控制方法。采用TI公司的TMS320LF2407A芯片为控制核心,结合PWM和PI调节设计无刷直流电动机的控制电路以及控制程序,以达到节能和使电动机快速启动的效果。

  5. Novel Motion Sensorless Control of Single Phase Brushless D.C. PM Motor Drive, with experiments

    DEFF Research Database (Denmark)

    Lepure, Liviu Ioan; Boldea, Ion; Andreescu, Gheorghe Daniel;

    2010-01-01

    A motion sensorless control for single phase permanent magnet brushless d.c. (PM-BLDC) motor drives, based on flux integration and prior knowledge of the PM flux/position characteristic is proposed here and an adequate correction algorithm is adopted, in order to increase the robustness to noise...... and to reduce the sensitivity to accuracy of flux linkage estimation. An I-f strategy is used for starting, by prescribing a ramped reference frequency and a constant current, and then the seamless transition to close loop sensorless control takes place. The proposed control system is detailed and validated...

  6. Fuzzy Auto-adjust PID Controller Design of Brushless DC Motor

    Science.gov (United States)

    Yuanxi, Wang; Yali, Yu; Guosheng, Zhang; Xiaoliang, Sheng

    Using conventional PID control method, to guarantee the rapidity and small overshoot dynamic and static performance of the BLDCM (brushless DC motor) system is out of the question. The control method to combine fuzzy control with PID control was fit the multivariable strong coupling nonlinear characteristic of BLDCM system. Matlab/Simulink simulation model had been built. The result of computer simulation shows that, compared with the conventional PID controller, the dynamic and static performance of fuzzy auto-adjust PID controller are put forward to optimize. The research work of this paper has profound significance for high precision controller design.

  7. Influence of the permanent magnet overhang on the performance of the brushless dc motor

    Science.gov (United States)

    Wang, J. P.; Lieu, D. K.; Lorimer, W. L.; Hartman, A.

    1998-06-01

    Axial overhang of the permanent magnets has been used to enhance the performance of radial flux brushless dc motors, but its precise contribution to performance is not well known. This article aims at the investigation of the overhang effects by finite element and lumped parameter modeling. An empirical formula which allows two-dimensional analysis to account for overhang effects is proposed. A three-dimensional equivalent magnetic circuit model is developed and its ability to accurately predict overhang effects is assessed. Results of finite element and lumped parameter models are compared and a design methodology is forwarded.

  8. Shaft Voltage and Life of Bearing electric-erosion for the Brushless DC Motor

    Science.gov (United States)

    Maetani, Tatsuo; Isomura, Yoshinori; Komiyama, Hiroshi; Morimoto, Shigeo

    This paper describes the life of noise of bearing electro-erosion in the shaft voltage of brushless DC motors. We confirmed that shaft voltage is suppressed to equal to or less than the dielectric breakdown voltage of bearing lubricant in the insulated rotor proposed for suppression of shaft voltage. However, since bearing electro-erosion appears over time along with the deterioration of noise performance, the threshold of the shaft voltage to secure noise performance over long periods of time is necessary. Therefore, the threshold of the shaft voltage that influences the life of noise was obtained in acceleration tests.

  9. A novel configuration for a brushless DC motor with an integrated planetary gear train

    Science.gov (United States)

    Yan, Hong-Sen; Wu, Yi-Chang

    2006-06-01

    This paper presents a novel configuration of a brushless DC (BLDC) motor with an integrated planetary gear train, which provides further functional and structural integrations to overcome inherent drawbacks of traditional designs. The effects of gear teeth on the magnetic field and performance of the BLDC motor are investigated. Two standard gear profile systems integrated on the stator with feasible numbers of gear teeth are introduced to reduce the cogging torque. An equivalent magnetic circuit model and an air-gap permeance model are applied to analytically analyze the magnetic field, while the validity is verified by 2-D finite-element method (FEM). Furthermore, the motor performance is discussed and compared with an existing design. The results show that the present design has the characteristics of lower cogging torque and torque ripple than the conventional design, which is of benefit to the widely applications on accurate motion and position control for BLDC motors.

  10. Optimization and Verification of a Brushless DC-Motor for Cryogenic Mechanisms

    Science.gov (United States)

    Eggens, M.; van Loon, D.; Smit, H. P.; Jellema, W.; Dieleman, P.; Detrain, A.; Stokroos, M.; Nieuwenhuizen, A. C. T.

    2013-09-01

    In this paper we report on the results of the investigation on the feasibility of a cryogenic motor for a Filter Wheel Mechanism (FWM) for the instrument SpicA FAR-infrared Instrument (SAFARI). The maximum allowed dissipation of 1 mW is a key requirement, as a result of the limited cooling resources of the satellite. Therefore a quasi 3D electromagnetic (EM) model of a Brushless DC (BLDC) motor has been developed. To withstand the severe launch loads a mechanical concept has been designed to limit the friction torque in the bearings. The model was verified by room temperature and cryogenic measurements on an existing motor from the test setup. The model shows that the proposed BLDC motor design fulfills the requirements.

  11. Speed and Displacement Control System of Bearingless Brushless DC Motor Based on Improved Bacterial Foraging Algorithm

    Directory of Open Access Journals (Sweden)

    Diao Xiaoyan

    2016-01-01

    Full Text Available To solve the deficiencies of long optimization time and poor precision existing in conventional bacterial foraging algorithm (BFA in the process of parameter optimization, an improved bacterial foraging algorithm (IBFA is proposed and applied to speed and displacement control system of bearingless brushless DC (Bearingless BLDC motors. To begin with the fundamental principle of BFA, the proposed method is introduced and the individual intelligence is efficiently used in the process of parameter optimization, and then the working principle of bearingless BLDC motors is expounded. Finally, modeling and simulation of the speed and displacement control system of bearingless BLDC motors based on the IBFA are carried out by taking the software of MATLAB/Simulink as a platform. Simulation results show that, speed overshoot, torque ripple and rotor position oscillation are dramatically reduced, thus the proposed method has good application prospects in the field of bearingless motors.

  12. The Parameter Estimation and Stability Improvement of the Brushless DC Motor

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Cherl Jin [Halla University (Korea, Republic of); Im, Tae Bin [Korea Electronics Technology Institute (Korea, Republic of)

    1999-03-01

    Generally, the digital controller has many advantages such as high precision, robustness to electrical noise, capability of flexible programming and fast response to the load variation. In this study, we have established proper mathematical equivalent model of brushless DC (BLDC) motor and estimated the motor parameter by means of the back-emf measurement as being the step input to the controlled target BLDC motor. And the validity of proposed estimation method is confirmed by the test result of step response. As well, we have designed the reasonable digital controller as a consequence of the root locus method which is obtained from the open-loop transfer function of BLDC motor with hall sensor, and the determination of control gain for variable speed control. Here, revised Ziegler-Nichols tuning method is applied for the proper digital gain establishment, and the system stability is verified by the frequency domain analysis with Bode-plot and experimentation. (author). 8 refs., 18 figs., 1 tab.

  13. Study of direct back EMF detection for sensorless brushless DC motor

    Institute of Scientific and Technical Information of China (English)

    ZOU Ji-bin; JIANG Shan-lin; LIANG Wei-yan

    2010-01-01

    In this paper,a new rotor position detecting method for the sensorless control of brushless DC motor(BLDCM)is introduced.It obtains the phase back EMF signal from the motor terminal voltage by properly choosing the PWM and sensing strategy directly and needn' t the motor neutral point voltage information.The paper analyzes both the steady-state of PWM on the high side modulator mode which doesnt consider the parasitic capacitance Coes in the switches and the transient-state of PWM on the high side modulator mode which considers the parasitic capacitance Coes in the switches in detail.The experimental results verify that the proposed method is not sensitive to switching noise,no filtering is required,and good motor performance is achieved within a wide speed range.

  14. Four quadrant control circuit for a brushless three-phase dc motor

    Science.gov (United States)

    Nola, Frank J. (Inventor)

    1987-01-01

    A control circuit is provided for a brushless three-phase dc motor which affords four quadrant control from a single command. The control circuit probes acceleration of the motor in both clockwise and counterclockwise directions and braking and generation in both clockwise and counterclockwise directions. In addition to turning on individual transistors of the transistor pairs connected to the phase windings of the motor for 120 deg periods while the other transistor of that pair is off, the control circuit also provides, in a future mode of operation, turning the two transistors of each pair on and off alternately at a phase modulation frequency during such a 120 deg period. A feedback signal is derived which is proportional to the motor current and which has a polarity consistent with the command signal, such that negative feedback results.

  15. Brushless DC Motor and Resolver for Venusian Environment Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In response to the need for motors and actuators that can operate in the harsh venusian environment for extended periods of time, on the order of several hours to...

  16. Brushless DC Motor and Resolver for Venusian Environment Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In response to the need for motors, actuators and sample acquisition system that can operate in the harsh Venusian environment for extended periods of time, on the...

  17. Brushless DC Motor Drive during Speed Regulation with Artificial Neural Network Controller

    Directory of Open Access Journals (Sweden)

    Sakshi Solanki

    2016-06-01

    Full Text Available Brushless DC motor, at this moment is extensively used being many industrial functions due to the different features like high efficiency and dynamic response and high speed range. This paper is proposing a technology named as Artificial Neural Network controller to control the speed of the brushless DC motor. Here the paper contributes an analysis of performance Artificial Neural Network controller. Because it is difficult to handle by the use of conventional PID controller as BLDC drive is a nonlinear. Through PID controller, the speed regulation of BLDC is not efficient and reliable as PID controller cannot operate the large data, results it gives different variation in BLDC motor control. The ANN easily trains the data of large amount by NN toolbox. As ANN controller has the strength to indulge characteristics of control and it is accessible to operate the huge amount of data as like human can store in a mind. The empirical results prove that an ANN controller can better control the act than the PID controller. The modelling, control and the simulation of the BLDCM get done by applying MATLAB/SIMULINK software kit.

  18. Optimization of PID Controller for Brushless DC Motor by using Bio-inspired Algorithms

    Directory of Open Access Journals (Sweden)

    Sanjay Kr. Singh

    2014-02-01

    Full Text Available This study presents the use and comparison of various bio-inspired algorithms for optimizing the response of a PID controller for a Brushless DC Motor in contrast to the conventional methods of tuning. For the optimization of the PID controllers Genetic Algorithm, Multi-objective Genetic Algorithm and Simulated Annealing have been used. PID controller tuning with soft-computing algorithms comprises of obtaining the best possible outcome for the three PID parameters for improving the steady state characteristics and performance indices like overshoot percentage, rise time and settling time. For the calculation and simulation of the results the Brushless DC Motor model, Maxon EC 45 flat ф 45 mm with Hall Sensors Motor has been used. The results obtained the optimization using Genetic Algorithms, Multi-objective Genetic Algorithm and Simulated Annealing is compared with the ones derived from the Ziegler-Nichols method and the MATLAB SISO Tool. And it is observed that comparatively better results are obtained by optimization using Simulated Annealing offering better steady state response.

  19. Developing micro DC-brushless motor driver and position control for fiber positioners

    Science.gov (United States)

    Jenni, Laurent; Hörler, Philipp; Makarem, Laleh; Kneib, Jean-Paul; Gillet, Denis; Bleuler, Hannes; Bouri, Mohamed; Prada, Francisco; De Rivera, Guillermo; Sanchez, Justo

    2014-07-01

    In the large-scale, Dark Energy Spectroscopic Instrument (DESI), thousands of fiber positioners will be used. Those are robotic positioners, with two axis, and having the size of a pen. They are tightly packed on the focal plane of the telescope. Dedicated micro-robots have been developed and they use 4mm brushless DC motors. To simplify the implementation and reduce the space occupancy, each actuator will integrate its own electronic control board. This board will be used to communicate with the central trajectory generator, manage low level control tasks and motor current feeding. In this context, we present a solution for a highly compact electronic. This electronic is composed of two layers. The first is the power stage that can drive simultaneously two brushless motors. The second one consists of a fast microcontroller and deals with different control tasks: communication, acquisition of the hall sensor signals, commutation of the motors phases, and performing position and current regulation. A set of diagnostic functions are also implemented to detect failure in the motors or the sensors, and to sense abnormal load change that may be the result of two robots colliding.

  20. Effect of phase advance on the brushless dc motor torque speed respond

    Science.gov (United States)

    Mohd, M. S.; Karsiti, M. N.; Mohd, M. S.

    2015-12-01

    Brushless direct current (BLDC) motor is widely used in small and medium sized electric vehicles as it exhibit highest specific power and thermal efficiency as compared to the induction motor. Permanent magnets BLDC rotor create a constant magnetic flux, which limit the motor top speed. As the back electromotive force (EMF) voltage increases proportionally with motor rotational speed and it approaches the amplitude of the input voltage, the phase current amplitude will reach zero. By advancing the phase current, it is possible to extend the maximum speed of the BLDC motor beyond the rated top speed. This will allow smaller BLDC motor to be used in small electric vehicles (EV) and in larger applications will allow the use of BLDC motor without the use of multispeed transmission unit for high speed operation. However, increasing the speed of BLDC will affect the torque speed response. The torque output will decrease as speed increases. Adjusting the phase angle will affect the speed of the motor as each coil is energized earlier than the corresponding rise in the back emf of the coil. This paper discusses the phase advance strategy of Brushless DC motor by phase angle manipulation approaches using external hall sensors. Tests have been performed at different phase advance angles in advance and retard positions for different voltage levels applied. The objective is to create the external hall sensor system to commutate the BLDC motor, to establish the phase advance of the BLDC by varying the phase angle through external hall sensor manipulation, observe the respond of the motor while applying the phase advance by hall sensor adjustment.

  1. Primary control of a Mach scale swashplateless rotor using brushless DC motor actuated trailing edge flaps

    Science.gov (United States)

    Saxena, Anand

    The focus of this research was to demonstrate a four blade rotor trim in forward flight using integrated trailing edge flaps instead of using a swashplate controls. A compact brushless DC motor was evaluated as an on-blade actuator, with the possibility of achieving large trailing edge flap amplitudes. A control strategy to actuate the trailing edge flap at desired frequency and amplitude was developed and large trailing edge flap amplitudes from the motor (instead of rotational motion) were obtained. Once the actuator was tested on the bench-top, a lightweight mechanism was designed to incorporate the motor in the blade and actuate the trailing edge flaps. A six feet diameter, four bladed composite rotor with motor-flap system integrated into the NACA 0012 airfoil section was fabricated. Systematic testing was carried out for a range of load conditions, first in the vacuum chamber followed by hover tests. Large trailing edge flap deflections were observed during the hover testing, and a peak to peak trailing edge flap amplitude of 18 degree was achieved at 2000 rotor RPM with hover tip Mach number of 0.628. A closed loop controller was designed to demonstrate trailing edge flap mean position and the peak to peak amplitude control. Further, a soft pitch link was designed and fabricated, to replace the stiff pitch link and thereby reduce the torsional stiffness of the blade to 2/rev. This soft pitch link allowed for blade root pitch motion in response to the trailing edge flap inputs. Blade pitch response due to both steady as well as sinusoidal flap deflections were demonstrated. Finally, tests were performed in Glenn L. Martin wind tunnel using a model rotor rig to assess the performance of motor-flap system in forward flight. A swashplateless trim using brushless DC motor actuated trailing edge flaps was achieved for a rotor operating at 1200 RPM and an advance ratio of 0.28. Also, preliminary exploration was carried out to test the scalability of the motor

  2. Cheaper Synthesis Of Multipole-Brushless-dc-Motor Current

    Science.gov (United States)

    Alhorn, Dean C.; Howard, David E.

    1994-01-01

    Circuit converts output of single two-phase shaft-angle resolver to that of multi-speed three-phase shaft-angle resolver. Converter circuit applicable to generation of multispeed, multiphase shaft-angle-resolver signals from single two-phase shaft-angle resolver. Combination of converter circuit and single two-phase shaft-angle resolver offer advantages in cost, weight, size, and complexity. Design readily adaptable to two-phase motor.

  3. Developing Micro DC-Brushless Motor Driver and Position Control for Fiber Positioners

    CERN Document Server

    Jenni, Laurent; Makarem, Laleh; Kneib, Jean-Paul; Gillet, Denis; Bleuler, Hannes; Bouri, Mohamed; Prada, Francisco; De Rivera, Guillermo; Sanchez, Justo

    2014-01-01

    In the large-scale, Dark Energy Spectroscopic Instrument (DESI), thousands of fiber positioners will be used. Those are robotic positioners, with two axis, and having the size of a pen. They are tightly packed on the focal plane of the telescope. Dedicated micro-robots have been developed and they use 4mm brushless DC motors. To simplify the implementation and reduce the space occupancy, each actuator will integrate its own electronic control board. This board will be used to communicate with the central trajectory generator, manage low level control tasks and motor current feeding. In this context, we present a solution for a highly compact electronic. This electronic is composed of two layers. The first is the power stage that can drive simultaneously two brushless motors. The second one consists of a fast microcontroller and deals with different control tasks: communication, acquisition of the hall sensor signals, commutation of the motors phases, and performing position and current regulation. A set of di...

  4. 无刷直流电动机双模式控制%Dual Mode Control for Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    赵建勇; 许林荣; 徐交建

    2012-01-01

    在分析电机运行原理和应用要求的基础上,引用基于新型逆变器的无刷直流电动机双模式控制方法,设计出无刷直流电动机双模式控制器,基速以下采用双闭环控制方法,基速以上采用弱磁扩速控制方法.仿真和实验验证该方案可行,实现无刷直流电动机在宽速度范围内稳定工作.%Dual mode control method based on a new inverter for brushless DC motor was cited by analyzing the operation principle of brushless DC motor and application requirements. Dual mode controller for brushless DC motor was designed, which used dual closed loop control when motor was running below base speed and field-weakening control when motor was running above base speed. The simulation and experiment results show that brushless DC motor can operate in a wide speed range.

  5. Effect of design variables on irreversible magnet demagnetization in brushless dc motor

    Science.gov (United States)

    Kim, Tae Heoung; Lee, Ju

    2005-05-01

    The large demagnetizing currents in brushless dc (BLdc) motor are generated by the short-circuited stator windings and the fault of a drive circuit. So, irreversible magnet demagnetization occurs due to the external demagnetizing field by these currents. In this paper, we deal with the effect of design variables on irreversible magnet demagnetization in BLdc motor through the modeling approach using a two-dimensional finite-element method (2D FEM). The nonlinear analysis of a permanent magnet is added to 2D FEM to consider irreversible demagnetization. As a result, it is shown that magnet thickness, teeth surface width, and rotor back yoke thickness are the most important geometrical dimensions of BLdc motor in terms of irreversible magnet demagnetization.

  6. Electromagnetic Flux Analysis of Permanent Magnet Brushless DC Motor Using Magnet Software

    Directory of Open Access Journals (Sweden)

    G.R.Puttalakshmi

    2013-08-01

    Full Text Available Permanent Magnet Brushless DC (PMBLDC motors is emerging as a suitable motor for a number of drive applications in industrial and consumer products. Cogging torque is one of the important drawbacks of PMBLDC motor which results in shaft vibrations and noise. The focus of this work is to minimize the electromagnetic flux and cogging torque in PMBLDC by introducing structural design modifications. The performance of the machine is analyzed by varying the magnet pole shape, magnet pole width and by using magnetic material with different remenance value. For analyzing the performance of the machine, machine is modeled using Finite Element Analysis (FEA based software package Magnet. Cogging torque and average torque are taken as performance measures to determineoptimum pole shape and pole width.

  7. Brushless DC motor control system responsive to control signals generated by a computer or the like

    Science.gov (United States)

    Packard, Douglas T. (Inventor); Schmitt, Donald E. (Inventor)

    1987-01-01

    A control system for a brushless DC motor responsive to digital control signals is disclosed. The motor includes a multiphase wound stator and a permanent magnet rotor. The rotor is arranged so that each phase winding, when energized from a DC source, will drive the rotor through a predetermined angular position or step. A commutation signal generator responsive to the shaft position provides a commutation signal for each winding. A programmable control signal generator such as a computer or microprocessor produces individual digital control signals for each phase winding. The control signals and commutation signals associated with each winding are applied to an AND gate for that phase winding. Each gate controls a switch connected in series with the associated phase winding and the DC source so that each phase winding is energized only when the commutation signal and the control signal associated with that phase winding are present. The motor shaft may be advanced one step at a time to a desired position by applying a predetermined number of control signals in the proper sequence to the AND gates and the torque generated by the motor may be regulated by applying a separate control signal to each AND gate which is pulse width modulated to control the total time that each switch connects its associated winding to the DC source during each commutation period.

  8. Unbalanced Magnetic Force Calculation in Brushless DC Motors

    Directory of Open Access Journals (Sweden)

    Z. Valipoor

    2015-03-01

    Full Text Available In this paper, an analytical method to calculate the unbalance magnetic pull forces (UMP due to the eccentricity of the rotor with considering the slots impact, is presented. Unbalanced magnetic pull is important because it affects the wear on the bearings as well as noise and vibration. The results of the analytical method, using finite element analysis for a prototype motor, were valid. Some force harmonics have the potential to produce noise and vibration. In order to detect harmonics of unbalance magnet forces, Depending on the fault frequency, the stator currents and spectrum of the vibrations have been analyzed

  9. Magnetic Circuit & Torque Analysis Of Brushless DC Motor

    Directory of Open Access Journals (Sweden)

    Arif J. Abbas

    2013-05-01

    Full Text Available       This work is concerned with magnetic and torque analysis of BLDCM and with development of a method of designing BLDCM that have symmetric winding on the rotor .make significant contribution to the rotor inductance position difficult. It is also show that the prediction detent torque can be extremely sensitive to the permanent magnet by altering magnet arc width. Finally, simple lumped models that allow one to predict motor performance and characteristics as a function of main dimension, magnet residual flux density and phase current are developed. These models are used as a basis for an approach to designing BLDCM

  10. Characterization and enhancement of micro brushless DC motor response

    Science.gov (United States)

    Conroy, Joseph; Kehlenbeck, Andrew; Humbert, J. Sean; Nothwang, William

    2014-06-01

    Commercially available speed controllers, motors, and propellers typically comprise the powertrains of many micro aerial robotic systems, such as quadrotor vehicles. As on board state sensing and processing improves, actuation bandwidth is becoming a significant bottleneck that limits the performance of the entire closed loop system. The performance of the commercial products can be greatly enhanced through the implementation of classical control methods directly at the powertrain level. In this paper, reduced order open loop models for three representative commercially available powertrains were estimated and were compared with closed loop equivalents. Further performance improvement is realized by the addition of a static inverse to mitigate the steady state structured uncertainty of the system.

  11. Analytical modeling of the dynamics of brushless dc motors for aerospace applications: A conceptual framework

    Science.gov (United States)

    Demerdash, N. A. O.

    1976-01-01

    The modes of operation of the brushless d.c. machine and its corresponding characteristics (current flow, torque-position, etc.) are presented. The foundations and basic principles on which the preliminary numerical model is based, are discussed.

  12. Extracting DC bus current information for optimal phase correction and current ripple in sensorless brushless DC motor drive

    Institute of Scientific and Technical Information of China (English)

    Zu-sheng HO; Chii-maw UANG; Ping-chieh WANG

    2014-01-01

    Brushless DC motor (BLDCM) sensorless driving technology is becoming increasingly established. However, op-timal phase correction still relies on complex calculations or algorithms. In finding the correct commutation point, the problem of phase lag is introduced. In this paper, we extract DC bus current information for auto-calibrating the phase shift to obtain the correct commutation point and optimize the control of BLDC sensorless driving. As we capture only DC bus current information, the original shunt resistor is used in the BLDCM driver and there is no need to add further current sensor components. Software processing using only simple arithmetic operations successfully accomplishes the phase correction. Experimental results show that the proposed method can operate accurately and stably at low or high speed, with light or heavy load, and is suitable for practical applications. This approach will not increase cost but will achieve the best performance/cost ratio and meet market expectations.

  13. Adaptive H∞ nonlinear velocity tracking using RBFNN for linear DC brushless motor

    Science.gov (United States)

    Tsai, Ching-Chih; Chan, Cheng-Kain; Li, Yi Yu

    2012-01-01

    This article presents an adaptive H ∞ nonlinear velocity control for a linear DC brushless motor. A simplified model of this motor with friction is briefly recalled. The friction dynamics is described by the Lu Gre model and the online tuning radial basis function neural network (RBFNN) is used to parameterise the nonlinear friction function and un-modelled errors. An adaptive nonlinear H ∞ control method is then proposed to achieve velocity tracking, by assuming that the upper bounds of the ripple force, the changeable load and the nonlinear friction can be learned by the RBFNN. The closed-loop system is proven to be uniformly bounded using the Lyapunov stability theory. The feasibility and the efficacy of the proposed control are exemplified by conducting two velocity tracking experiments.

  14. Realization of Fuzzy Logic Controlled Brushless DC Motor Drives Using Matlab/Simulink

    OpenAIRE

    Çunkas, Mehmet; Aydoğdu, Omer

    2010-01-01

    In this paper, an efficient simulation model for fuzzy logic controlled brushless direct current motor drives using Matlab/Simulink is presented. The brushless direct current (BLDC) motor is efficiently controlled by Fuzzy logic controller (FLC). The control algorithms, fuzzy logic and PID are compared. Also, the dynamic characteristics of the BLDC motor (i.e. speed and torque) and as well as currents and voltages of the inverter components are easily observed and analyzed by using the develo...

  15. Control System of Sensorless Brushless DC Motor Based on TMS320F240

    Directory of Open Access Journals (Sweden)

    Li Zeng

    2011-11-01

    Full Text Available A brushless DC(BLDC motor with the characteristics of high speed and high power density has been more widely used in industrial area. The BLDC motor requires the position and speed sensors for control. However the position sensors are undesirable from standpoints of size, cost, maintenance and reliability. There are some different ways that can solve this problem, depending on the flux distribution. This paper describes a control system of sensorless BLDC motor. The back-EMF is adopted to detect the rotor position. The back-EMF is very small in the motor starting process, and it is difficult to obtain rotor position efficiently. A re-setting method of the rotor is proposed in the paper, and current closed loop is used for high-speed and safety in the motor starting process. A good speed and current double closed loops system is designed. The speed and current regulators are implemented by a digital signal processor(DSP. A simple algorithm is used to calculate motor speed indirectly by the software, which simplifies the system hardware structure. The hardware structure and software design of sensorless BLDC motor control system are described in details. The simulation and experimental results have shown the validity of the sensorless control system and the accuracy of the detective position signal obtained.

  16. DC Brushless Motor Control Design and Preliminary Testing for Independent 4-Wheel Drive Rev-11 Robotic Platform

    Directory of Open Access Journals (Sweden)

    Roni Permana Saputra

    2012-03-01

    Full Text Available This paper discusses the design of control system for brushless DC motor using microcontroller ATMega 16 that will be applied to an independent 4-wheel drive Mobile Robot LIPI version 2 (REV-11. The control system consists of two parts which are brushless DC motor control module and supervisory control module that coordinates the desired command to the motor control module. To control the REV-11 platform, supervisory control transmit the reference data of speed and direction of motor to control the speed and direction of each actuator on the platform REV-11. From the test results it is concluded that the designed control system work properly to coordinate and control the speed and direction of motion of the actuator motor REV-11 platform. 

  17. Integrated solar pump design incorporating a brushless DC motor for use in a solar heating system

    Energy Technology Data Exchange (ETDEWEB)

    Swan, Lukas G.; Allen, Peter L. [Department of Mechanical Engineering, Dalhousie University, 1360 Barrington Street, Halifax, Nova Scotia B3J 1Z1 (Canada)

    2010-09-15

    Most solar thermal hot water heating systems utilize a pump for circulation of the working fluid. An elegant approach to powering the pump is via solar energy. A ''solar pump'' employs a photovoltaic module, electric motor, and pump to collect and convert solar energy to circulate the working fluid. This article presents an experimental investigation of a new integrated solar pump design that employs the stator of a brushless DC motor and a magnetically coupled pump that has no dynamic seal. This design significantly reduces total volume and mass, and eliminates redundant components. The integrated design meets a hydraulic load of 1.7 bar and 1.4 litres per minute, equal to 4.0 watts, at a rotational speed of 500 revolutions per minute. The brushless DC motor and positive displacement pump achieve efficiencies of 62% and 52%, respectively, resulting in an electric to hydraulic efficiency of 32%. Thus, a readily available photovoltaic module rated 15 watts output is suitable to power the system. A variety of design variations were tested to determine the impact of the armature winding, pump size, pulse width modulation frequency, seal can material, etcetera. The physical and magnetic design was found to dominate efficiency. The efficiency characteristics of a photovoltaic module are such that over-sizing is wasteful. The integrated design presents a robust, efficient package for use as a solar pump. Although focus has been placed on application to a solar thermal collector system, variations of the design are suitable for a wide variety of applications such as remote location water pumping. (author)

  18. Sensorless Operation of Brushless DC Motor Drive using Back EMF Technique

    Directory of Open Access Journals (Sweden)

    R. Saranya, S. Saravana kumar,R. Baskaran, A. Vinidha Roc, K. Sathiyasekar

    2014-04-01

    Full Text Available The Brushless Direct Current (BLDC motors are one of the motor types that is gaining rapid popularity. Its major appliances include refrigerators, washing machines, vacuum cleaners, freezers, etc. As the name implies, BLDC motors do not use brushes for commutation; instead, they are electronically commutated. This paper proposes a new optimized technique for the Sensorless operation of permanent magnet brushless direct current (BLDC motor, which is based on back Electro Motive Force (back EMF, Zero Crossing Detection (ZCD. This proposed commutation technique of BLDC motor significantly reduces sensing circuits and cost of motor drive.

  19. Speed Digital Control of Brushless DC Motor Using dsPIC Controller

    Directory of Open Access Journals (Sweden)

    Gheorghe Băluţă

    2014-09-01

    Full Text Available This paper presents the digital control of the Brushless DC motor (BLDCM speed. The dsPICDEM MC1 development system (with the dsPIC30F6010A microcontroller and the dsPICDEM MC1L power module, manufactured by Microchip Company, were used. The control program was developed in C programming language. The graphical user interface was realized in LabVIEW 8.6 graphical programming language. For speed control, a digital controller PI type was implemented. Due to digital controller well chosen and well tuned, the system response at speed step variation is very good. Therewith, the experimental results obtained also show a good compensation of disturbance which does not happen in open-loop control.

  20. PERFORMANCE STUDIES OF INTEGRATED FUZZY LOGIC CONTROLLER FOR BRUSHLESS DC MOTOR DRIVES USING ADVANCED SIMULATION MODEL

    Directory of Open Access Journals (Sweden)

    C. Subba Rami Reddy

    2011-07-01

    Full Text Available This paper introduces an Integrated fuzzy logic controller (IFLC for brushless dc (BLDC motor drives using advanced simulation model and presents a comparative study of performances of PID controller and IFLC. The dynamic characteristics of speed and torque are effectively monitored and analyzed using the proposed model. The aim of IFLC is to obtain improved performance in terms of disturbance rejection or parameter variation than obtained using PID controller. The IFLC is constructed by using Fuzzy logic controller (FLC and PID controller. A performance comparison of the controllers is also given based on the integral of the absolute value of the error (IAE, the integral of the squared error (ISE, the integral of the time-weighted absolute error (ITAE and the integral of the time-weighted squared error (ITSE. The results show the effectiveness of the proposed controller.

  1. Dynamic modeling of brushless dc motor-power conditioner unit for electromechanical actuator application

    Science.gov (United States)

    Demerdash, N. A.; Nehl, T. W.

    1979-01-01

    A comprehensive digital model for the analysis of the dynamic-instantaneous performance of a power conditioner fed samarium-cobalt permanent magnet brushless DC motor is presented. The particular power conditioner-machine system at hand, for which this model was developed, is a component of an actual prototype electromechanical actuator built for NASA-JSC as a possible alternative to hydraulic actuators as part of feasibility studies for the shuttle orbiter applications. Excellent correlation between digital simulated and experimentally obtained performance data was achieved for this specific prototype. This is reported on in this paper. Details of one component of the model, its applications and the corresponding results are given in this paper.

  2. A novel position-sensorless control method for brushless DC motors

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, X.Z., E-mail: Z_X_Z2000@163.co [School of Electrical and Information Engineering, Hunan University, Changsha (China) and School of Computer and Communication, Hunan Institute of Engineering, Xiangtan (China); Wang, Y.N. [School of Electrical and Information Engineering, Hunan University, Changsha (China)

    2011-03-15

    This paper presents the design and implementation of a high performance position-sensorless control scheme for the extensively used brushless DC (BLDC) motors. In the proposed method, with proper PWM strategy, instead of detecting the zero-crossing point (ZCP) of the nonexcited motor back electromagnetic force (EMF) or the average motor terminal to neutral voltage, the true zero-crossing points of back EMF are extracted directly from the difference of the specific average line-to-line voltages with simple RC circuits and comparators. In contrast to conventional methods, the neutral voltage is not needed and the diode freewheeling currents in the nonconducted phase are eliminated completely; therefore, the commutation signals are more accurate and insensitive to the common-mode noise. Moreover, 100% pulse-width-modulation (PWM) duty ratio control of BLDC motors is provided with the presented method. As a result, the proposed method makes it possible to achieve good motor performance over a wide speed range and to simplify the starting procedure. The detailed circuit model is analyzed and some experimental results obtained from a sensorless prototype are shown to verify the analysis and confirm the validity of the proposed method.

  3. Test Platform for Advanced Digital Control of Brushless DC Motors (MSFC Center Director's Discretionary Fund)

    Science.gov (United States)

    Gwaltney, D. A.

    2002-01-01

    A FY 2001 Center Director's Discretionary Fund task to develop a test platform for the development, implementation. and evaluation of adaptive and other advanced control techniques for brushless DC (BLDC) motor-driven mechanisms is described. Important applications for BLDC motor-driven mechanisms are the translation of specimens in microgravity experiments and electromechanical actuation of nozzle and fuel valves in propulsion systems. Motor-driven aerocontrol surfaces are also being utilized in developmental X vehicles. The experimental test platform employs a linear translation stage that is mounted vertically and driven by a BLDC motor. Control approaches are implemented on a digital signal processor-based controller for real-time, closed-loop control of the stage carriage position. The goal of the effort is to explore the application of advanced control approaches that can enhance the performance of a motor-driven actuator over the performance obtained using linear control approaches with fixed gains. Adaptive controllers utilizing an exact model knowledge controller and a self-tuning controller are implemented and the control system performance is illustrated through the presentation of experimental results.

  4. Comparative Study of Fuzzy Logic Based Speed Control of Multilevel Inverter fed Brushless DC Motor Drive

    Directory of Open Access Journals (Sweden)

    Pritha Agrawal

    2014-02-01

    Full Text Available This paper presents a comparative analysis of speed control of brushless DC motor (BLDC drive fed with conventional two-level, three and five level diode clamped multilevel inverter (DC-MLI. The performance of the drive system is successfully evaluated using Fuzzy Logic (FL based speed controller. The control structure of the proposed drive system is described. The speed and torque characteristic of conventional two-level inverter is compared with the three and five-level multilevel inverter (MLI for various operating conditions. The three and five level diode clamped multilevel inverters are simulated using IGBT’s and the mathematical model of BLDC motor has been developed in MATLAB/SIMULINK environment. The simulation results show that the Fuzzy based speed controller eliminate torque ripples and provides fast speed response. The developed Fuzzy Logic model has the ability to learn instantaneously and adapt its own controller parameters based on disturbances with minimum steady state error, overshoot and rise time of the output voltage.

  5. The Analysis of Vibration Due to Magnetic Exciting Force in the Brushless DC Motor

    Energy Technology Data Exchange (ETDEWEB)

    Han, Ki Jin [LG Innotek (Korea); Cho, Han Sam; Jung, Hyun Kyo [Seoul National University, Seoul (Korea)

    2001-01-01

    In this paper, the general research on the analysis of the vibration due to magnetic exciting force in the small brushless DC(BLDC) motor, which is used in the Digital Versatile Disk(DVD) ROM driving system, is performed. The first part of the study is the analysis of the magnetic exciting force in the air gap region. As a verification of the exciting force by numerical analysis, the magnetic exciting force distribution in the airgap region is computed by using Reluctance Network Method(RNM). In addition, thr effect of the eccentricity on the magnetic exciting force is discussed. The other part of the research is the structural analysis if the rotor structure of thr BLDC motor. The natural mode analysis of thr rotor structure is performed, and the vibration response due to magnetic exciting force is found. As a result of the procedures, the basic estimation of the effect of the magnetic exciting force on the vibration of BLDC motor is suggested. (author). 14 refs., 10 figs., 1 tab.

  6. On the Application of Brushless DC Motor in Power Tools%浅谈无刷直流电机在电动工具中的应用

    Institute of Scientific and Technical Information of China (English)

    孙超英

    2014-01-01

    Make a general introduction to brushless DC motor application of power tools manufacturers, compare the technical difference between brushless DC motor and brush DC motor in powers tools from the structures and principles, combining with the significant advantages and disadvantages of brushless DC motor brushless compared with brush DC motor, to give advice of selection of brushless DC motor or brush DC motor in power tools motor from the cost of manufacturing and quality control.%介绍电动工具制造企业应用无刷直流电机的大致情况,从结构和原理上对比电动工具用无刷直流电机与有刷直流电机的技术性差异,结合无刷直流电机相比有刷直流电机的显著优缺点,从企业制造成本、质量控制角度提出了电动工具用电机选用无刷直流或有刷直流的建议方向。

  7. Optimal Control for Single-Phase Brushless DC Motor with Hall Sensor

    Directory of Open Access Journals (Sweden)

    Dawei Meng

    2013-02-01

    Full Text Available This study deals with the optimization control of a single-phase brushless DC motor (BLDCM with Hall sensor. A simple modeling method with feasible parameter identification is adopted to meet characteristics of single-phase BLDCM. With the linear Hall sensor feedback, the advantages of current-mode control scheme and soft-commutation scheme are proposed to achieve maximum efficiency over the entire speed range. This thesis also develops a low-cost and high efficiency control for single-phase BLDCM. The hardware test platform has been constructed on a single-chip Field Programmable Gate Array (FPGA of Cyclone II Family of Altera to verify the performance and feasibility of the proposed optimization control strategies. When using the control scheme with Hall sensor, experimental results show that there are at least a 10% improvement for average value of dc-link current, a 10% improvement for RMS value of phase current and a 40% improvement for peak value of phase current.

  8. SPEED CONTROL OF BRUSHLESS DC MOTOR ON RESONANT POLE INVERTER USING FUZZY LOGIC CONTROLLER

    Directory of Open Access Journals (Sweden)

    S. Sivakotiah

    2011-10-01

    Full Text Available Brushless dc motor has been widely used in drive system and servo control because of its fast response ,high density ,high efficiency ,low inertia ,high reliability ,maintenance free. It is however driven by a hard switching frequency, high switching losses, high electromagnetic interference, high acoustic noise and low efficiency. The rectifier/inverter with a simple commutation circuit to provide zero voltage turn on for the switches and soft turn off for diodes. The converter is intended for high performance, medium power applications requiring bidirectional power flow .A new soft switching inverter has been developed to overcome over voltages and over current problems existing resonant link inverter .This inverter employs a single auxiliary switches. The introduces fuzzy logic based soft switching resonant pole inverter using transformer, which can generates dc link voltages notches during chopping which an minimized the drawback of soft switching, The operation principle and control scheme of the inverter are analyzed and performance of the fuzzy controller is compared with conventional PI controller .The simulation result show that the fuzzy controller is compared with the conventional PI controller.

  9. POWER FACTOR CORRECTION IN PERMANENT MAGNET BRUSHLESS DC MOTOR DRIVE USING SINGLE-PHASE CUK CONVERTER

    Directory of Open Access Journals (Sweden)

    SANJEEV SINGH

    2010-12-01

    Full Text Available Permanent magnet brushless DC motor (PMBLDCM drives are being employed in many variable speed applications due to their high efficiency, silent operation, compact size, high reliability, ease of control, and low maintenance requirements. These drives have power quality problems and poor power factor at input AC mains as they are mostly fed through diode bridge rectifier based voltage source inverters. To overcome such problems a single-phase single-switch power factor correction AC-DC converter topology based on a Cuk converter is proposed to feed voltage source inverters based PMBLDCM. It focuses on the analysis, design and performance evaluation of the proposed PFC converter topology for a 1.5 kW, 1500 rpm, 400 V PMBLDCM drive used for an air-conditioning system. The proposed PFC converter topology is modelled and its performance is simulated in Matlab-Simulink environment and results show an improved power quality and good power factor in wide speed range of the drive.

  10. Rotor Pole Shape Optimization of Permanent Magnet Brushless DC Motors Using the Reduced Basis Technique

    Directory of Open Access Journals (Sweden)

    GHOLAMIAN, A. S.

    2009-06-01

    Full Text Available In this paper, a magnet shape optimization method for reduction of cogging torque and torque ripple in Permanent Magnet (PM brushless DC motors is presented by using the reduced basis technique coupled by finite element and design of experiments methods. The primary objective of the method is to reduce the enormous number of design variables required to define the magnet shape. The reduced basis technique is a weighted combination of several basis shapes. The aim of the method is to find the best combination using the weights for each shape as the design variables. A multi-level design process is developed to find suitable basis shapes or trial shapes at each level that can be used in the reduced basis technique. Each level is treated as a separated optimization problem until the required objective is achieved. The experimental design of Taguchi method is used to build the approximation model and to perform optimization. This method is demonstrated on the magnet shape optimization of a 6-poles/18-slots PM BLDC motor.

  11. Design and control of the phase current of a brushless dc motor to eliminate cogging torque

    Science.gov (United States)

    Jang, G. H.; Lee, C. J.

    2006-04-01

    This paper presents a design and control method of the phase current to reduce the torque ripple of a brushless dc (BLDC) motor by eliminating cogging torque. The cogging torque is the main source of torque ripple and consequently of speed error, and it is also the excitation source to generate the vibration and noise of a motor. This research proposes a modified current wave form, which is composed of main and auxiliary currents. The former is the conventional current to generate the commutating torque. The latter generates the torque with the same magnitude and opposite sign of the corresponding cogging torque at the given position in order to eliminate the cogging torque. Time-stepping finite element method simulation considering pulse-width-modulation switching method has been performed to verify the effectiveness of the proposed method, and it shows that this proposed method reduces torque ripple by 36%. A digital-signal-processor-based controller is also developed to implement the proposed method, and it shows that this proposed method reduces the speed ripple significantly.

  12. Off-line tuning of a PI speed controller for a permanent magnet brushless DC motor using DSP

    Energy Technology Data Exchange (ETDEWEB)

    Demirtas, Metin, E-mail: mdtas@balikesir.edu.t [Electrical and Electronics Engineering Department, Balikesir University, Balikesir (Turkey)

    2011-01-15

    In this paper, a new method of tuning Proportional Integral (PI) coefficients for a permanent magnet brushless DC (PMBLDC) motor drives is proposed. Artificial neural network is used to identify the whole system using maximum overshoot and settling time obtained from the application circuit for different K{sub p}-K{sub i} pairs. Optimal values of PI controller coefficients are obtained using genetic algorithm. Motion Control Kit (MCK243) is used to carry out digital motion control applications. The MCK243 kit includes a power module and a three-phase brushless motor. TMS320F243 programs are used for PMBLDC motor speed control. Experimental results are given to show the validity of this method.

  13. Mathematical field models of brushless DC motors with permanent magnets and their comparative analysis

    Directory of Open Access Journals (Sweden)

    A.V. Matyuschenko

    2015-03-01

    Full Text Available By means of JMAG-Designer 12 the author performed a comparative analysis of the calculation of the EMF, cogging torque and electromagnetic torque of brushless motor with permanent magnets in two-dimensional and three-dimensional formulation of the problem.

  14. On Stability of Open-Loop Operation without Rotor Information for Brushless DC Motors

    Directory of Open Access Journals (Sweden)

    Zhong Wu

    2014-01-01

    Full Text Available Open-loop operation mode is often used to control the Brushless DC Motors (BLDCMs without rotor position sensors when the back electromotive force (EMF is too weak due to the very low rotor velocity. The rotor position information is not necessary in this mode and the stator windings are supplied with voltages under a certain ratio of the amplitude to the frequency. However, the rotor synchronization will be destroyed once if the commutation instant is inappropriate. In order to improve the reliability of the open-loop operation mode, a dynamic equation is established to represent the synchronization error between the rotor and the stator. Thereafter, the stability of the open-loop control mode is analyzed by using Lyapunov indirect method. Theoretical analysis indicates that the open-loop control mode is asymptotically stable only when the commutation instant of the stator current lags behind the ideal one suitably. Finally, theoretical analysis is verified through the experimental results of a certain BLDCM.

  15. Controlling a Four-Quadrant Brushless Three-Phase dc Motor

    Science.gov (United States)

    Nola, F. J.

    1986-01-01

    Control circuit commutates windings of brushless, three-phase, permanent-magnet motor operating from power supply. With single analog command voltage, controller makes motor accelerate, drive steadily, or brake regeneratively, in clockwise or counterclockwise direction. Controller well suited for use with energy-storage flywheels, actuators for aircraft-control surfaces, cranes, industrial robots, and other electromechanical systems requiring bidirectional control or sudden stopping and reversal.

  16. Development of a Practical Low-Cost µC based Brushless DC Motor Controller using Proteus

    OpenAIRE

    Y. L. Karnavas; Ch. L. Liagkos

    2012-01-01

    Simulation, design and prototype construction of a low cost three phase permanent magnet (PM) brushless DC (BLDC) motor controller for low power applications is studied in this paper. The drive circuitry is based on the PIC16F877A microcontroller (µC), which –among others- performs pulse width modulation (PWM) control for a 6-step, 120-degree trapezoidal PM BLDC motor drive. The specific processor is a widely used one and its characteristics are judged excellent in conjunction with its low c...

  17. Distortion of magnetic field and magnetic force of a brushless dc motor due to deformed rubber magnet

    Science.gov (United States)

    Lee, C. J.; Jang, G. H.

    2008-04-01

    This paper investigates the distortion of magnetic field of a brushless dc (BLDC) motor due to deformed rubber magnet. Global or local deformation of rubber magnet in the BLDC motor is mathematically modeled by using the Fourier series. Distorted magnetic field is calculated by using the finite element method, and unbalanced magnetic force is calculated by using the Maxwell stress tensor. When the rubber magnet is globally or locally deformed, the unbalanced magnetic force has the frequencies with the first harmonic and the harmonics of slot number ±1. However, the harmonic deformation with multiple of common divisor of pole and slot does not generate unbalanced magnetic force due to the rotational symmetry.

  18. Brushless direct-current motor with stationary armature and field

    Science.gov (United States)

    Studer, P. A.

    1970-01-01

    Electronically commutated dc motor has an active fixed field winding, and active fixed armature winding, and passive rotor. By use of brushless dc motor switching technique, motor provides continuous controllable and reversible torque without use of sliding contacts.

  19. Effect of maximum torque according to the permanent magnet configuration of a brushless dc motor with concentrated winding

    Science.gov (United States)

    Lee, Kab-Jae; Kim, Sol; Lee, Ju; Oh, Jae-Eung

    2003-05-01

    A brushless dc (BLDC) motor, which has a permanent magnet (PM) component, is a potential candidate for hybrid or electric vehicle applications. Minimizing the BLDC motor size is an important requirement for application. This requirement is usually satisfied by adopting a high performance permanent magnet or improved winding methods. The PM configuration is also a critical point in design. This article presents the effect of the PM configuration on motor performance, especially the maximum torque. Four representative BLDC motor types are analytically investigated under the condition that the volume of the PM and magnetic material is constant. An embedded interior permanent magnet motor has the best torque performance the maximum torque of which is more than 1.5 times larger than that of the surface mounted permanent magnet motor. The performance of back electromotive force, instantaneous torques is also investigated.

  20. Speed Control of Brushless Dc Motor Using Current Fed Quasi Z-source Inverter with Regeneration Capability

    Directory of Open Access Journals (Sweden)

    A. Santhi Mary Antony

    2015-06-01

    Full Text Available Current fed Quasi Z-Source Inverters (qZSI have the advantages of voltage buck-boost capability, improved reliability, reduced passive component ratings, continuous input current, a common dc rail between source and inverter and unique regeneration capability. This current-fed qZSIs are bidirectional with an additional diode, unlike the voltage-fed ZSI that needs a switch to achieve bidirectional power flow. Since current fed quasi Z Source Inverter has many advantages it can be employed for motor drive applications such as Brushless DC motor (BLDC drive. Therefore this study proposes the use of qZSI for BLDC motor. The simulation results for the same are presented in this study.

  1. System Simulation of Brushless DC Motor%无刷直流电动机的系统仿真

    Institute of Scientific and Technical Information of China (English)

    孙艳霞; 刘宗

    2000-01-01

    建立了一个场路结合的无刷直流电动机系统数学模型,对其稳态动特性进行了仿真,并分析了不同电机参数对电机性能的影响.%The steady-state dynamic performances of brushless DC motor are simulated. Themathematics model of field-circuit coupled is established, and the key parameters effectingperformance are analyzed.

  2. Influence of slot number and pole number in fault-tolerant brushless dc motors having unequal tooth widths

    Science.gov (United States)

    Ishak, D.; Zhu, Z. Q.; Howe, D.

    2005-05-01

    The electromagnetic performance of fault-tolerant three-phase permanent magnet brushless dc motors, in which the wound teeth are wider than the unwound teeth and their tooth tips span approximately one pole pitch and which have similar numbers of slots and poles, is investigated. It is shown that they have a more trapezoidal phase back-emf wave form, a higher torque capability, and a lower torque ripple than similar fault-tolerant machines with equal tooth widths. However, these benefits gradually diminish as the pole number is increased, due to the effect of interpole leakage flux.

  3. Numerical simulation of dynamics of brushless dc motors for aerospace and other applications. Volume 1: Model development and applications, part B

    Science.gov (United States)

    Demerdash, N. A. O.; Nehl, T. W.

    1979-01-01

    A mathematical model was developed and computerized simulations were obtained for a brushless dc motor. Experimentally obtained oscillograms of the machine phase currents are presented and the corresponding current and voltage waveforms for various modes of operation of the motor are presented and discussed.

  4. Fast response Antiwindup PI speed controller of Brushless DC motor drive: Modeling, simulation and implementation on DSP

    Directory of Open Access Journals (Sweden)

    Mohd Tariq

    2016-05-01

    Full Text Available Most of the Brushless DC (BLDC motors drive adopts proportional, integral and derivative (PID controller and pulse width modulation (PWM scheme for speed control. Hence, BLDC motor drive has strong saturation characteristics. The saturation results in a typical windup phenomenon. The paper presents an Antiwindup drive for BLDC motor. An Antiwindup controller (AWC has been used in the paper. AWC has been modeled in MATLAB/Simulink and comparison has been done between conventional PI controller and AWC at different starting loads. Dynamic characteristics of the BLDC motor drive have been examined and results are presented and discussed in detail in this paper. Details of DSP based experimental validation of the simulated results are also presented here.

  5. 简介永磁无刷直流电机的原理及特点%Brief in Principle and Feature of Permanent Magnetic Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    刘志刚

    2014-01-01

    介绍无刷直流电机在电动工具中的运用概况,对无刷电机相比有刷电机的特点、结构和控制原理进行分析,展望对电动工具应用新型电机的未来趋势。%Introduce the brushless DC motor used in power tools, analyze the characteristics, structures and control principles of brushless motor compared with brush motor, looking forward to the future trend of the new motor for power tools applications.

  6. An enhanced Z-source inverter topology-based permanent magnet brushless DC motor drive speed control

    Science.gov (United States)

    Geno Peter, P.; Rajaram, M.

    2015-08-01

    In this paper, an enhanced Z-source inverter (ZSI) is introduced for controlling the speed of permanent magnet brushless DC motor (PMBLDCM) drive. It is the extension of the conventional ZSI and the elements used in the circuit are the same as those of the conventional ZSI, except that the position of Inverter Bridge and diode would be exchanged from the classical circuit diagram. This exchanged circuit avoids the startup path of the inrush current and hence reduces the inrush current and improves the motor efficiency. Different modes of enhanced ZSI are studied with PMBLDCM. The voltage polarity of Z-source capacitors in the proposed circuit is the same as that of the input voltage polarity. Furthermore, to get the same voltage boost, the capacitor voltage stress is reduced to a significant extent. The speed control capability of the proposed brushless DC motor drive is compared with that of the conventional ZSI. The proposed ZSI is implemented in MATLAB/Simulink working platform and the output performance is evaluated. Also, the performance of voltage ratio is analysed both by simulation and mathematical models. All these analyses are known to express the innovative features of the proposed system.

  7. Chaos control for the output-constrained system by using adaptive dynamic surface technology and application to the brushless DC motor

    Energy Technology Data Exchange (ETDEWEB)

    Luo, Shaohua, E-mail: hua66com@163.com [The Jiangsu Key Laboratory of Advanced Manufacturing Technology, Huaiyin Institute of Technology, Huai’an 223003 (China); School of Automation, Chongqing University, Chongqing 400044 (China); Hou, Zhiwei; Chen, Zhong [The Jiangsu Key Laboratory of Advanced Manufacturing Technology, Huaiyin Institute of Technology, Huai’an 223003 (China)

    2015-12-15

    In this paper, chaos control is proposed for the output- constrained system with uncertain control gain and time delay and is applied to the brushless DC motor. Using the dynamic surface technology, the controller overcomes the repetitive differentiation of backstepping and boundedness hypothesis of pre-determined control gain by incorporating radial basis function neural network and adaptive technology. The tangent barrier Lyapunov function is employed for time-delay chaotic system to prevent constraint violation. It is proved that the proposed control approach can guarantee asymptotically stable in the sense of uniformly ultimate boundedness without constraint violation. Finally, the effectiveness of the proposed approach is demonstrated on the brushless DC motor example.

  8. Chaos control for the output-constrained system by using adaptive dynamic surface technology and application to the brushless DC motor

    Science.gov (United States)

    Luo, Shaohua; Hou, Zhiwei; Chen, Zhong

    2015-12-01

    In this paper, chaos control is proposed for the output- constrained system with uncertain control gain and time delay and is applied to the brushless DC motor. Using the dynamic surface technology, the controller overcomes the repetitive differentiation of backstepping and boundedness hypothesis of pre-determined control gain by incorporating radial basis function neural network and adaptive technology. The tangent barrier Lyapunov function is employed for time-delay chaotic system to prevent constraint violation. It is proved that the proposed control approach can guarantee asymptotically stable in the sense of uniformly ultimate boundedness without constraint violation. Finally, the effectiveness of the proposed approach is demonstrated on the brushless DC motor example.

  9. Aspects Concerning the Torque Ripple Control of the Brushless DC Motor

    Directory of Open Access Journals (Sweden)

    BALUTA, G.

    2013-05-01

    Full Text Available This paper deals with two advanced numerical structures to control the electromagnetic torque ripple of Brushless Direct Current Motors (BLDCM, indirectly achieved by phase currents control and directly by the Direct Torque Control (DTC technique. In DTC there was implemented an observer to increase the rudimentary transducer resolution, containing three Hall Effect sensors. The experimental results describe the evolution of torque in both situations of control and are obtained by applying a control strategy for an electric drive system with BLDCM with trapezoidal Back-EMF in Two-Phase Mode.

  10. Electromechanical properties of a disc-type salient-pole brushless DC motor with different pole numbers

    Energy Technology Data Exchange (ETDEWEB)

    Lukaniszyn, M.; Jagiela, M.; Wrobel, R.

    2003-04-16

    A brushless, permanent magnet, three-phase disc-type salient-pole DC motor with co-axial flux in the stator is considered. Electromechanical properties of a basic eight-pole motor are compared with those for a 16-pole one of the same volume, in order to contrast the two potential candidates for variable-speed, low-cost drives. As a basis of the comparative analysis, 3D FEM magnetic field modelling and circuit analysis considering an electronic commutator are employed. Increasing the number of poles results in unfavourable raising in the switching frequency. The eight-pole motor construction has been shown in simulations to have higher efficiency and lower power losses than its 16-pole counterpart. (Author)

  11. Position and Speed Control of Brushless DC Motors Using Sensorless Techniques and Application Trends

    Science.gov (United States)

    Gamazo-Real, José Carlos; Vázquez-Sánchez, Ernesto; Gómez-Gil, Jaime

    2010-01-01

    This paper provides a technical review of position and speed sensorless methods for controlling Brushless Direct Current (BLDC) motor drives, including the background analysis using sensors, limitations and advances. The performance and reliability of BLDC motor drivers have been improved because the conventional control and sensing techniques have been improved through sensorless technology. Then, in this paper sensorless advances are reviewed and recent developments in this area are introduced with their inherent advantages and drawbacks, including the analysis of practical implementation issues and applications. The study includes a deep overview of state-of-the-art back-EMF sensing methods, which includes Terminal Voltage Sensing, Third Harmonic Voltage Integration, Terminal Current Sensing, Back-EMF Integration and PWM strategies. Also, the most relevant techniques based on estimation and models are briefly analysed, such as Sliding-mode Observer, Extended Kalman Filter, Model Reference Adaptive System, Adaptive observers (Full-order and Pseudoreduced-order) and Artificial Neural Networks. PMID:22163582

  12. Position and speed control of brushless DC motors using sensorless techniques and application trends.

    Science.gov (United States)

    Gamazo-Real, José Carlos; Vázquez-Sánchez, Ernesto; Gómez-Gil, Jaime

    2010-01-01

    This paper provides a technical review of position and speed sensorless methods for controlling Brushless Direct Current (BLDC) motor drives, including the background analysis using sensors, limitations and advances. The performance and reliability of BLDC motor drivers have been improved because the conventional control and sensing techniques have been improved through sensorless technology. Then, in this paper sensorless advances are reviewed and recent developments in this area are introduced with their inherent advantages and drawbacks, including the analysis of practical implementation issues and applications. The study includes a deep overview of state-of-the-art back-EMF sensing methods, which includes Terminal Voltage Sensing, Third Harmonic Voltage Integration, Terminal Current Sensing, Back-EMF Integration and PWM strategies. Also, the most relevant techniques based on estimation and models are briefly analysed, such as Sliding-mode Observer, Extended Kalman Filter, Model Reference Adaptive System, Adaptive observers (Full-order and Pseudoreduced-order) and Artificial Neural Networks.

  13. Position and Speed Control of Brushless DC Motors Using Sensorless Techniques and Application Trends

    Directory of Open Access Journals (Sweden)

    Jaime Gómez-Gil

    2010-07-01

    Full Text Available This paper provides a technical review of position and speed sensorless methods for controlling Brushless Direct Current (BLDC motor drives, including the background analysis using sensors, limitations and advances. The performance and reliability of BLDC motor drivers have been improved because the conventional control and sensing techniques have been improved through sensorless technology. Then, in this paper sensorless advances are reviewed and recent developments in this area are introduced with their inherent advantages and drawbacks, including the analysis of practical implementation issues and applications. The study includes a deep overview of state-of-the-art back-EMF sensing methods, which includes Terminal Voltage Sensing, Third Harmonic Voltage Integration, Terminal Current Sensing, Back-EMF Integration and PWM strategies. Also, the most relevant techniques based on estimation and models are briefly analysed, such as Sliding-mode Observer, Extended Kalman Filter, Model Reference Adaptive System, Adaptive observers (Full-order and Pseudoreduced-order and Artificial Neural Networks.

  14. structure and performance analysis of DC brushless motor%直流无刷电动机的结构与性能分析

    Institute of Scientific and Technical Information of China (English)

    唐小元

    2013-01-01

      新世纪以来精密伺服装置向朝着高端不断发展,作为动力的直流无刷电动机作为高性能、高功率密度和长寿面的特种电机越来越引起了人们的重视。通过研究总结无刷电机结构与性能的各种联系与区别,有助于无刷电机的设计和使用。%In the new century, the precision power device has great development,the brushless DC motor as a special-ty motors of high performance and high power density and longevity have attracted people's attention. By studying relations and differences of the structure and properties of brushless motor .It is helpful for brushless motor design and use.

  15. Adaptive Controllers for Permanent Magnet Brushless DC Motor Drive System using Adaptive-Network-based Fuzzy Interference System

    Directory of Open Access Journals (Sweden)

    V. M. Varatharaju

    2011-01-01

    Full Text Available Problem statement: The tuning methodology for the parameters of adaptive speed controller causes a transient deviation of the response from the set reference following variation in load torque in a permanent-magnet brushless DC (BLDC motor drive system. Approach: This study develops a mathematical model of the BLDC drive system, firstly. Secondly, discusses a design of the closed loop drive system employing the Adaptive-Network-based Fuzzy Interference System (ANFIS. The nonlinear simulation model of the BLDC motors drive system with ANFIS control based is simulated in the MATLAB/SIMULINK platform. Results: The necessitated data for training the ANFIS control is generated by simulation of the system with conventional PI controller. Conclusion: The simulated electromagnetic torque and rotor speed signify the superiority of the proposed technique over the classical method.

  16. Analysis of armature reaction and winding inductances of permanent magnet brushless DC motor with deep slot concentrated coils

    Institute of Scientific and Technical Information of China (English)

    HUANG Ping-lin; HU Qian-sheng; YU Li; HUANG Yun-kai

    2006-01-01

    Based on the configuration of deep slot concentrated coils,an analytical model is developed for predicting the armature reaction field produced by the 3-phase stator windings of permanent magnet brushless DC motors with concentrated coils by using the image method and the analytical functions of the armature reaction and winding inductances are proposed accounting for the influence of statot slotting.This approach is different from the method of equivalent distributed current sheet and more suitable for electric machines,which have concentrated coils and deeper slots.Under different control mode,the different analytical functions are presented.This will be helpful when further analyzing the performance of the motor.The results agree with the experiment very well.

  17. Summary of Detecting Rotor Position Technique for Brushless DC Motor%无刷直流电机转子位置检测技术综述

    Institute of Scientific and Technical Information of China (English)

    吴红星; 叶宇骄; 倪天; 郭庆波

    2011-01-01

    无刷直流电机是一种先进的机电一体化装置,无刷直流电动机及控制技术由于其本身特点,使其成为驱动控制领域的研究焦点.该文根据无刷直流电机无位置传感器控制特点,分析了无刷直流电机工作原理,结合国内外基于无刷直流电机转子位置检查控制的相关文献,综述了无刷直流电机转子位置检测控制方法发展概况,并针对每种控制方法阐述了其优缺点.%The brushless DC Motor Drives is an advanced mechanical electronic devices. The technology of sensorless brushless DC motor control is becoming researching focus because of its special structure and low cost. The article presented analysis of characteristics and working principle of the brushless DC motor. It also discussed the development of detecting rotor position means for brushless DC motor based on the relevant literature home and abroad. At the same time it described the advantages and disadvantages of various methods according to each new detecting rotor position technique.

  18. 无轴承无刷直流电机的直接转矩控制%Direct torque control of bearingless brushless DC motor

    Institute of Scientific and Technical Information of China (English)

    许洁; 刘贤兴; 李兵伟

    2012-01-01

    无轴承无刷直流电机结合了无轴承电机和无刷直流电机的优点、具有良好的行特性和广泛的运用前景.研究了无轴承无刷直流电机的控制方法,并将直接转矩控制技术应用于无轴承无刷直流电机的转矩绕组.通过Matlab/Simulink仿真和实验结果表明,转矩绕组的直接转矩控制(DTC)能提高系统的响应速度,减少转矩脉动,提高系统的静动态性能且控制方法简单有效.%Bearingless brushless DC motor, combining advantages of brushless DC motor and bearingless motor, has favorable operating characteristics and wide range of applications. In this paper, the control method of bear ingless brushless DC motor is researched, and the bearingless brushless DC motor's torque winding is controlled by using the method of direct torque control ( DTC ). By Matlab/Simulink simulation and experiment of the con trol system, the results show that the application of DTC to torque winding control of bearingless brushless DC motor is correct and feasible. DTC improves the system's response speed, reduces torque ripple, and optimizes the control effect. The control method is relatively simple.

  19. Simulation Research of Fault Model of Detecting Rotor Dynamic Eccentricity in Brushless DC Motor Based on Motor Current Signature Analysis

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    The Brushless Direct Current (BLDC) motor is widely used in aerospace area, CNC machines and servo systems that require the high control accuracy Once the faults occur in the motor, it will cause great damage to the whole system. Mechanical faults are common in electric machines, and account for up to 50%-60% of the faults. Approximately, 80% of the mechanical faults lead to the eccentricity. So it is necessary to monitor the health condition of the motor to ensure the faults can be detected earlier and measures will be taken to imorove the reliability.

  20. Study of Fuzzy Adaptive PID Control of Brushless DC Motor%无刷直流电机模糊自适应PID控制的研究

    Institute of Scientific and Technical Information of China (English)

    潘晓磊; 赵川; 吕海立

    2016-01-01

    为了提高无刷直流电机控制系统的动、静态性能,将模糊控制结合PID控制算法应用到无刷直流电机速度控制系统中。在分析了无刷直流电机速度控制系统的基础上,利用PSIM与MATLAB/Simulink共同建立了无刷直流电动机模糊自适应PID控制的仿真模型,充分发挥了PSIM和MATLAB/Simulink各自在仿真方面的优势,简化了建立仿真模型的过程。仿真结果表明,采用模糊PID集成控制算法能够使无刷直流电机速度控制系统具有更快的响应速度和更强的抗干扰能力,对无刷直流电机控制系统的设计具有一定的指导意义。%In order to improve the static and dynamic performance of brushless DC motor control system, fuzzy control combined with PID control algorithm is applied to the brushless DC motor speed control system, the integration of fuzzy PID control algorithm. On the analysis of the brushless dc motor speed control system, using the MATLAB/Simulink to establish brushless DC motor speed control system simulation model. Among them, the control system of brushless DC motor drive model and control algorithm were established in PSIM and MATLAB/Simulink environment, give full play to their advantages, the PSIM and MATLAB simplifies the process of establishing simulation model. The simulation results show that the integration of fuzzy PID control algorithm can make the brushless DC motor speed control system has better dynamic and static performance and strong anti-jamming capability, the design of brushless DC motor control system has a certain guiding significance.

  1. Improved transistor-controlled and commutated brushless DC motors for electric vehicle propulsion

    Science.gov (United States)

    Demerdash, N. A.; Miller, R. H.; Nehl, T. W.; Nyamusa, T. A.

    1983-01-01

    The development, design, construction, and testing processes of two electronically (transistor) controlled and commutated permanent magnet brushless dc machine systems, for propulsion of electric vehicles are detailed. One machine system was designed and constructed using samarium cobalt for permanent magnets, which supply the rotor (field) excitation. Meanwhile, the other machine system was designed and constructed with strontium ferrite permanent magnets as the source of rotor (field) excitation. These machine systems were designed for continuous rated power output of 15 hp (11.2 kw), and a peak one minute rated power output of 35 hp (26.1 kw). Both power ratings are for a rated voltage of 115 volts dc, assuming a voltage drop in the source (battery) of about 5 volts. That is, an internal source voltage of 120 volts dc. Machine-power conditioner system computer-aided simulations were used extensively in the design process. These simulations relied heavily on the magnetic field analysis in these machines using the method of finite elements, as well as methods of modeling of the machine power conditioner system dynamic interaction. These simulation processes are detailed. Testing revealed that typical machine system efficiencies at 15 hp (11.2 kw) were about 88% and 84% for the samarium cobalt and strontium ferrite based machine systems, respectively. Both systems met the peak one minute rating of 35 hp.

  2. Mechatronical Design Studies on Small Brushless Motors

    Directory of Open Access Journals (Sweden)

    W. Amrhein

    2003-01-01

    Full Text Available Brushless DC- and AC-permanent-magnet motors controlled by powerful micro-controller electronics have opened up a significant share of the small motor market in the last years. Based on the mechanical low cost construction of single-phase motor the paper presents electronic drive concepts to improve the performance and for special applications also the lifetime of brushless motors. The tangential and radial forces acting on the rotor are controlled by special phase current curves to reduce the torque ripple and to avoid expendable machinery parts like ball or sliding bearings.

  3. Low-cost sensorless control of four-switch, brushless DC motor drive with direct back-EMF detection

    Institute of Scientific and Technical Information of China (English)

    Abolfazl HALVAEI NIASAR; Abolfazl VAHEDI; Hassan MOGHBELLI

    2009-01-01

    We propose a position sensorless control scheme for a four-switch, three-phase brushless DC motor drive, based on the zero crossing point detection of phase back-EMF voltages using newly defined error functions (EFs). The commutation instants are 30° after detected zero crossing points of the EFs. Developed EFs have greater magnitude rather than phase or line voltages so that the sensorless control can work at a lower speed range. Moreover, EFs have smooth transitions around zero voltage level that reduces the commutation errors. EFs are derived from the filtered terminal voltages Vao and vbo of two low-pass filters, which are used to eliminate high frequency noises for calculation of the average terminal voltages. The feasibility of the proposed sensorless control is demonstrated by simulation and experimental results.

  4. 无刷直流电机无位置传感器直接转矩控制%Direct Torque Control of Sensorless Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    雷雄

    2012-01-01

    A direct torque control for sensorless brushless DC motor is presented in this paper. The control method presented requires observation of the DC bus voltage and the three-phase stator currents of brushless DC motor, and estimate the flux, torque, and rotor position angles of motor In order to control brushless DC motor, the appropriate voltage space vector is selected according to the torque, current component on d-q axes and rotor position. The simulation and experimental results show that the control method is valid and feasible.%本文提出了一种将直接转矩控制应用于无刷直流电机的无位置传感器控制方法。需观测无刷直流电机的直流母线电压及定子侧的三相电流,从而估算出电机的磁链、转矩以及位置角,再根据转矩、d-q坐标系上的电流分量以及转子位置信息来选择相应的电压空间矢量,以实现对无刷直流电机的控制。仿真和实验结果表明本文提出的控制方法有效可行。

  5. Combined Discrete Space Voltage Vector with Direct Torque Control for Bearingless Brushless DC Motor and Closed-Loop Suspended Force Control

    Directory of Open Access Journals (Sweden)

    Weiran Wang

    2013-06-01

    Full Text Available In order to improve the performance of bearingless brushless DC motor, a closed-loop suspended force controller combining the discrete space voltage vector modulation is applied and the direct torque control is presented in this paper. Firstly, we increase the number of the control vector to reduce the torque ripple. Then, the suspending equation is constructed which is spired by the direct torque control algorithm. As a result, the closed-loop suspended force controller is built. The simulated and experimental results evaluate the performance of the proposed method. The more advantage is that the proposed algorithm can achieve the fast torque response, reduce the torque ripple, and follow ideal stator flux track. Furthermore, the motor which implants the closed-loop suspended force controller cannot onlyobtain the dynamic response rapidly and displacement control accurately, but also has the characteristics of bearingless brushless DC motor (such as simple structure, high energy efficiency, small volume and low failure rate.

  6. Noninvasive detection of unevenly magnetized permanent magnet of a brushless dc motor by characterizing back electromotive force

    Science.gov (United States)

    Lee, C. I.; Jang, G. H.

    2009-04-01

    Uneven magnetization of permanent magnets (PMs) is one of the major sources of unbalanced magnetic force and torque ripple, which excite a brushless dc (BLDC) motor. This paper investigates the frequency contents of the back electromotive force (BEMF) due to the unevenly magnetized PMs in a BLDC motor. The magnetic field of a BLDC motor is solved by using the finite element method, and the BEMF is calculated by differentiating the flux linkage with respect to time. The characteristics of BEMF are investigated by using the spectral analysis. Magnetic flux density of the ideally magnetized PMs has the harmonics of the pole-pair number, but unevenly magnetized PMs generate the additional harmonics. This research shows numerically and experimentally that the frequency components of the BEMF are determined by the least common multiple between the frequency contents of magnetic flux density from the PMs and the slot number per phase. It also shows that the magnetized status of the PMs of a BLDC can be noninvasively identified by monitoring the frequencies and the amplitudes of BEMF.

  7. Development of a Practical Low-Cost µC based Brushless DC Motor Controller using Proteus

    Directory of Open Access Journals (Sweden)

    Y. L. Karnavas

    2012-09-01

    Full Text Available Simulation, design and prototype construction of a low cost three phase permanent magnet (PM brushless DC (BLDC motor controller for low power applications is studied in this paper. The drive circuitry is based on the PIC16F877A microcontroller (µC, which –among others- performs pulse width modulation (PWM control for a 6-step, 120-degree trapezoidal PM BLDC motor drive. The specific processor is a widely used one and its characteristics are judged excellent in conjunction with its low cost. The prototype controller developed can perform rotation direction control, commutation sequence, speed control and reading Hall sensor signals. The controlling technique chosen is a “sensored type” one. The main reason for that, except control simplicity is the need for both low-speed and high-speed applications. The application of Proteus Virtual System Modelling (VSM software is also introduced in the paper. This software is used as a real-time simulation tool, in order to verify the performance of the BLDC motor drive, prior to its hardware implementation. Through virtual simulation of all the components used, the relevant results can be analyzed and monitored. Verification of the experimental results and validation of the simulated circuit has been done through the comparison of the results.

  8. 基于 LPC2148的无刷直流电机控制器的设计%Brushless DC Motor Controller Based on LPC2148

    Institute of Scientific and Technical Information of China (English)

    郎宝华; 李本斌

    2015-01-01

    设计了一款以 ARM7为核心的无刷直流电机控制器,给出了软硬件的具体实现方法,实现了霍尔传感器控制和反电势法控制。实验结果表明,该控制器可以可靠地驱动无刷直流电机,并可以进行速度控制。%A brushless DC motor controller whose core is ARM T is designed .And the concrete method of realization a‐bout the software and hardware is given .Both position sensor and back electromotive force control can be realized .The ex‐perimental results show that the controller can drive brushless DC motor reliably ,and owns the ability about speed control .

  9. Chaos control for the output-constrained system by using adaptive dynamic surface technology and application to the brushless DC motor

    Directory of Open Access Journals (Sweden)

    Shaohua Luo

    2015-12-01

    Full Text Available In this paper, chaos control is proposed for the output- constrained system with uncertain control gain and time delay and is applied to the brushless DC motor. Using the dynamic surface technology, the controller overcomes the repetitive differentiation of backstepping and boundedness hypothesis of pre-determined control gain by incorporating radial basis function neural network and adaptive technology. The tangent barrier Lyapunov function is employed for time-delay chaotic system to prevent constraint violation. It is proved that the proposed control approach can guarantee asymptotically stable in the sense of uniformly ultimate boundedness without constraint violation. Finally, the effectiveness of the proposed approach is demonstrated on the brushless DC motor example.

  10. Brushless DC Motor Self-Adaption Fuzzy PID Control System%无刷直流电机自适应模糊PID控制系统

    Institute of Scientific and Technical Information of China (English)

    王国玲; 李振宇; 范自道

    2013-01-01

      针对无刷直流电机传统PID控制存在精度低、抗干扰能力差及模糊控制稳态精度不高等问题,研究了一种自适应模糊PID控制方法。论文分析了直流无刷电机的工作原理,建立了直流无刷电机自适应模糊PID控制系统的计算机仿真数学模型,设计了系统速度环的模糊PID控制器,仿真结果表明,与传统PID控制相比,自适应模糊PID控制的BLDCM系统具有更高的稳定性和控制精度、更快的动态响应速度。%For the lower precision,bad anti-interference capability of traditional PID control and lower stable precision of fuzzy control for brushless DC motor,an adaptive fuzzy-PID control was deeply investigated in this paper. Working theory of brushless DC motor was analyzed,the simulated mathematical model of adaptive fuzzy-PID control for brushless DC motor was established,and the fuzzy-PID controller of speed regulator was designed. The results of simulation verified the better stability,the faster dynamic speed of adaptive fuzzy-PID control for brushless DC motor compared to traditional PID control.

  11. Electromagnetic-Thermal Integrated Design Optimization for Hypersonic Vehicle Short-Time Duty PM Brushless DC Motor

    Directory of Open Access Journals (Sweden)

    Quanwu Li

    2016-01-01

    Full Text Available High reliability is required for the permanent magnet brushless DC motor (PM-BLDCM in an electrical pump of hypersonic vehicle. The PM-BLDCM is a short-time duty motor with high-power-density. Since thermal equilibrium is not reached for the PM-BLDCM, the temperature distribution is not uniform and there is a risk of local overheating. The winding is a main heat source and its insulation is thermally sensitive, so reducing the winding temperature rise is the key to the improvement of the reliability. In order to reduce the winding temperature rise, an electromagnetic-thermal integrated design optimization method is proposed. The method is based on electromagnetic analysis and thermal transient analysis. The requirements and constraints of electromagnetic and thermal design are considered in this method. The split ratio and the maximum flux density in stator lamination, which are highly relevant to the windings temperature rise, are optimized analytically. The analytical results are verified by finite element analysis (FEA and experiments. The maximum error between the analytical and the FEA results is 4%. The errors between the analytical and measured windings temperature rise are less than 8%. It can be proved that the method can obtain the optimal design accurately to reduce the winding temperature rise.

  12. Technology and Key Strategy of IE4 Permanent Magnet Brushless DC Motor Drive for Electric Vehicle Application

    Directory of Open Access Journals (Sweden)

    Nitin Subramonium A K

    2017-03-01

    Full Text Available Environmental protection and energy conservations are the main concern of 21st century Asia Pacific developing countries. This concern has compelled to design and develop zero pollution road transportation Electric Vehicles (EVs. The EV system consist of energy storage devices such as battery, fuel cell, ultra-capacitors along with electric propulsion, body of the vehicle and energy management system with the diversified technology of electrical, electronics, mechanical, automotive and chemical engineering. The objective of electric vehicle is to produce commercial viable range, efficient performance, and comfort with safety and reliable operations at cheaper price than its counterpart the Internal Combustion Engine Vehicle (ICEV. The PMBLDC motors are the present choice of automobile industries and researchers because of its high power density, compact size, reliability, with noise free and minimum maintenance requirements. The present state of art Permanent Magnet Brushless DC (PMBLDC Motor drive for the electric vehicle application is studied / reviewed in this paper.. In addition the study also reveals the advancement of the Power Processing Unit (PPU which consists of Microelectronics and Controls (Me and C to produce the super-premium efficiency PMBLDC drive system for EV applications.

  13. PERFORMANCE EVALUATION OF HYBRID FUZZY LOGIC CONTROLLER FOR BRUSHLESS DC MOTOR DRIVE

    Directory of Open Access Journals (Sweden)

    C. SUBBA RAMI REDDY

    2011-06-01

    Full Text Available This paper presents Hybrid fuzzy logic controller (HFLC for the well developed and sophisticated simulation model of Brush less DC (BLDC motor drive using MATLAB. The developed simulation model has been examined by the PID controller and HFLC. The performance of the controllers is evaluated more precisely from various simulation studies for variations in the load torque and speed of BLDC motor drive. A performance comparison of two controllers is also carried out by taking various performance measures such as settling time, steady state error, peak overshoot, the integral of the absolute value of the error (IAE and the integral of the time-weighted squared error (ITSE. The results confirm that the developed simulation model is very convenient for the precise evaluation of performance and the HFLC shows improved performance over the PID controller in terms of disturbance rejection or parameter variation.

  14. 无刷直流电机的模糊控制系统仿真%Simulation of Fuzzy Control for Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    焦利利; 杨风

    2014-01-01

    This paper introduces the brushless DC motor of basic principle and mathematical model. Through the Simulink toolbox of the MATLAB model to build the fuzzy controller, the fuzzy control method of Brushless DC motor speed control., which achieves realization of Brushless DC motor fuzzy control system computer simulation. The results show that, the fuzzy controller has the advantages of simple structure, easy to implement, which can basically meet the system performance requirements.%本文介绍了无刷直流电机基本原理和数学模型。利用Matlab软件中Simulink工具箱搭建模糊控制器,采用模糊控制法对无刷直流电机进行调速。实现了无刷直流电机的模糊控制系统的计算机仿真。结果表明,该模糊控制器结构简单、易于实现,能够基本满足系统的性能要求。

  15. The Research of Brushless DC Motor Intelligent Control System%直流无刷电机智能控制系统研究

    Institute of Scientific and Technical Information of China (English)

    张文升; 胡勤耕; 王文丰; 张欣; 施怿文; 陈浩

    2012-01-01

    阐述直流无刷电机工作原理,分析直流无刷电机的数学模型;介绍模糊控制理论与神经网络控制理论,提出模糊自适应PID控制策略;在MATLAB环境下,分别使用反电动势建模法建立直流无刷电机控制系统的模型,并对各个模型进行仿真分析.然后利用BP神经网络控制策略,模糊自适应PID控制策略改进速度控制器中的常规PID算法,进行仿真,并将所得结果进行对比.从对比结果可以得出模糊自适应PID控制策略更适合直流无刷电机的控制.%This paper expounds the work principle of Brushless DC motor, analyzes the mathematical model of brushless DC motor; introduces the fuzzy control theory and neural network control theory, fuzzy adaptive PID control strategy; used the back EMF modeling established by the method of direct current brushless motor control system model in the MATLAB environment, and analyzes the each model simulation. Then used the BP neural network control strategy, fuzzy adaptive PID control strategy to improve the speed controller of the conventional PID algorithm, simulation, and compared the results. From the comparison of the results, the fuzzy adaptive PID control strategy for brushless DC motor control.

  16. Desarrollo de un controlador para motores DC brushless basado en CompactRIO y LabVIEW de National Instruments para el estudio de nuevos algoritmos de control

    OpenAIRE

    García Haro, Juan Miguel

    2011-01-01

    Este proyecto que el CAR inició hace pocos años tiene como objetivo principal el estudio y desarrollo de nuevas tecnologías en el campo de actuación y control automático, que servirá de base para otras futuras investigaciones dentro del centro. La tecnología a la que se hace mención se refiere al control de actuadores basados en motores DC brushless (BLDC Motors) empleando el sistema de hardware embebido CompactRIO y programación LabVIEW de National Instruments. Tradicionalmente se emplea en ...

  17. 无刷直流电机的智能控制研究%Research on the Intelligent Control of the Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    文卫

    2011-01-01

    无刷直流电机具有交流电机结构简单,运行可靠,维护方便等优点,又具有直流电机那样良好的调速性能而无机械换向器等优势,得到广泛应用.针对大多数无刷直流电机位置伺服系统采用的是PID控制方式,此控制方式存在系统参数发生变化或带有非线性负载时,其稳态输出特性变差,难以获得满意的控制效果的情况,本文在分析无刷直流电机的模型后,提出一种能根据跟踪误差大小,利用模式切换开关自动切换到PID控制或滑模变结构控制的智能控制方法,从而实现无刷直流电机转子转速的快响应、低超调和高精度控制.%The brushless DC motor has some AC motor advantages in the simple structure, reliable operation and convenient maintenance, and also has the DC motor advantages that good performance of speed and no mechanical commutation, so it is widely used. For most of the brushless DC motor position servo system uses a PID control mode. With this control mode the steady - state output characteristics would become poor when system parameter changes or with nonlinear load, and it is difficult to obtain satisfactory control effect. After analyzed the model of brushless DC motor, this article presented an intelligent control method that can utilize mode switch automatically switch to PID control or sliding mode variable structure control according to the tracking error size, so as to realize the brushless DC motor rotor speed quick response, low overshoot and high precision control.

  18. Study on Dual-redundancy Brushless DC Motor Control System%双余度无刷直流电机控制系统研究

    Institute of Scientific and Technical Information of China (English)

    李东

    2012-01-01

      在复杂工况条件下,由于维修不便,对无刷直流电机的可靠性要求较高。双余度无刷直流电机则能较好的解决此问题。本文设计了基于DSP的双余度无刷直流电动机驱动控制系统,详细介绍了系统DSP控制器的硬件电路设计,实现对电动机的位置、速度和电流的检测,给出了系统软件设计方案及控制策略,从而实现对整个系统的控制。结果表明,该控制系统,硬件电路结构简单,系统实时性好,响应快,具有良好的控制性能及动态特性。%  Under harsh operating condition, maintenance inconvenience, so the high reliability of brushless DC motor is required. Dual-redundancy brushless DC motor is a good solution to this problem. A control system of dual-redundancy brushless DC motor (BLDCM) based on digital signal processor is studied in this paper. The hardware design solutions of the DSP control er is detailed, then the position, speed and the current of the motor are detected, the software design solutions and the control method for the whole control system are presented. Experimental results show that the dual-redundancy motor system based on one piece of DSP has simple circuit, real-time and rapid response, and the system has good control performance and dynamic characteristic.

  19. Comparative analysis of some brushless motors based on catalog data

    Directory of Open Access Journals (Sweden)

    Anton Kalapish

    2005-10-01

    Full Text Available Brushless motors (polyphased AC induction, synchronous and brushless DC motors have no alternatives in modern electric drives. They possess highly efficient and very wide range of speeds. The objective of this paper is to represent some relation between the basic parameters and magnitudes of electrical machines. This allows to be made a comparative analysis and a choice of motor concerning each particular case based not only on catalogue data or price for sale.

  20. Optimizing of Commutation Torque Ripple Strategy in Brushless DC Motor%BLDCM换相转矩脉动的优化策略

    Institute of Scientific and Technical Information of China (English)

    王晓锋; 林伟

    2014-01-01

    First of all, this article creates the mathematical model of blushless DC Motor.Secondly, analyze the reduction theory of commutation torque ripple. Finally, put forward a strategy to reduce the commutation torque ripple from the low-speed level and high-speed level.This method guarantee equal between current decline rate of shutdown phase and current rising rate of opening phase during commutation, thus keep the current of un-commutation stable.Build a real brushless DC motor control platform for experimental verification,the proposed strategy of brushless DC motor commutation torque ripple is suppressed effectively.%首先建立了无刷直流电机(Brushless direct current motor, BLDCM)的数学模型,然后分析了换相转矩脉动的抑制原理,最后提出了低速阶段和高速阶段抑制换相转矩脉动的策略。此方法保证在换相期间,关断相的电流下降率和开通相的电流上升率绝对值相等,继而保证在换相期间非换相相电流保持恒定。搭建了实际直流无刷电机控制平台并进行实验验证,所提出的策略有效地抑制了直流无刷电机换相转矩脉动。

  1. 多功能无刷直流电机驱动控制器的研制%Research on Multiple Functions of Brushless DC Motor Drive

    Institute of Scientific and Technical Information of China (English)

    纪梁洲; 杨向宇; 龚晟

    2011-01-01

    A simple and easy to extend other functions brushless DC motor drive was designed, it can be used for a high-voltage and high-speed conditions. The MC33035 was combined with the microcontroller PIC18F1220 to solve the power supply problem on the bridge arm in the brushless DC motor driver which is caused by motor launch, because of the bootstrap capacitor technology was taken advantage of in the power supply. The other multiple functions, such as soft start, brake, reversion and so on, were also achieved in the brushless DC motor driver. Good performance of the system of stable and extensible was verified by the systematic experimental results. The system has some practical value in applications.%该文设计了一个电路简单且易于扩展,可用于高压高速场合的无刷直流电机驱动控制器.该驱动器通过无刷直流电机专用芯片MC33035结合单片机PIC18F1220解决了采用自举电容技术得到的驱动器上桥臂电源所造成的电机启动问题并且实现了诸如软启动,制动,正反转等多种功能.实验表明,该系统运行稳定,可扩展性强,具有一定的应用价值.

  2. 无刷直流电机系统的CMAC逆模型控制∗%CMAC Inverse Model Control of Brushless DC Motor System

    Institute of Scientific and Technical Information of China (English)

    李学哲; 张军; 潘玉民

    2014-01-01

    Based on the idea of inverse system control, an inverse model intelligent control approach was proposed for brushless DC motor( BLDCM) system of nonlinear, strong coupling and uncertain factors. The approach uses the cerebellar model articulation controller ( CMAC ) to realize the inverse dynamic model of brushless DC motor, and a linear system constructed with the original system model, to obtain more ideal than traditional PID control in dynamic and static performance. It can effectively overcome the influence of various complex factors. This method has the characteristics of rapid response, no overshoot and immunity ability and strong robustness. The proposed control method can significantly improve the real-time tracking ability and control accuracy. The simulation and experimental results showed that the effectiveness of the method, then provides a new way for brushless DC motor control.%基于逆系统控制的思想,针对无刷直流电机系统的非线性、强耦合以及不确定因素等提出了一种逆模型智能控制方法。该方法利用小脑模型关节控制器实现无刷直流电机的逆动态模型,与原系统模型构成线性系统,获得较传统PID控制更理想的动静态性能,有效克服各种复杂因素的影响。该方法响应快速、无超调、抗扰能力和鲁棒性强,可显著提高实时跟踪能力和控制精度。仿真证明了该方法的有效性,为无刷直流电机控制提供了一种新途径。

  3. Simulation of Brushless DC Motor Control System%无刷直流电动机控制系统的仿真

    Institute of Scientific and Technical Information of China (English)

    罗杨瑞; 辛小南; 贺莉

    2011-01-01

    Through the analysis of the mathematical model of brushless DC motor,the brushless DC motor control system was modeled and emulated with Simulink.The method of look-up table was used to implement the modeling of counter -electromotive force and current control module, which made the system more intuitive, more streamlined and easy to change models.The current and the torque waveform that get from the simulation are nearly the same as that get by the time stepper finite element method.It shows that the establishment of the mathematical model and the simulation method is correct and lay the foundation of further study on permanent magnet brushless DC motor.%通过分析无刷直流电动机数学模型,利用Simulink对无刷直流电动机及其控制系统进行了建模和仿真.分别用查表法来实现反电动势和电流控制模块的建模,使系统更直观、简化,便于模型修改,为无刷直流电动机控制系统的设计和调试提供了新的方法.对模型进行速度控制系统仿真,仿真得到的三相相电流波形和反电动势波形与通过理论分析得到的波形一致,验证了该建模思想和方法的正确性.

  4. Position-and Velocity- Sensorless Control of Cylindrical Brushless DC Motors Driven by Sinusoidal Current at Low Speed Using Eddy Current

    Science.gov (United States)

    Takashima, Hiroshi; Tomita, Mutuwo; Chen, Zhiqian; Satoh, Mitsuhiko; Doki, Shinji; Okuma, Shigeru

    This paper proposes to paste non-magnetic materials on the rotor surface of a cylindrical brushless DC motor and to use the model including the extended e.m.f. for sensorless control. In the proposed method, the inductance changes depending on the rotor position because of eddy currents, which flow on the non-magnetic material at high frequency. The rotor position can be estimated at standstill and at low speeds. The simulation results show that the proposed method is very useful.

  5. 一种无刷直流电机参数的测量方法%The Parameter Measurement of Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    易慧斌; 邓惠文; 邓元实; 李昊

    2012-01-01

    介绍无刷直流电机( Brushless DC Motor,简称BLDCM)参数的一种简单的测量方法.利用并励直流电机参数测量的简易性和可操作性,分别计算出并励直流电机拖动BLDCM时和并励直流电机单独运转时,系统的转动惯量和摩擦转矩系数,即可计算出BLDCM的转动惯量和摩擦转矩系数.

  6. Adjustment of Phase Change Opportunity in Brushless DC Motor%直流无刷电机换相时机的调整

    Institute of Scientific and Technical Information of China (English)

    刘佳峰; 谢杨华

    2006-01-01

    直流无刷电机BLDCM(Brushless DC Motor)采用电子换相代替机械换相,兼有交流电机和直流电机的优点.提出了在磁场畸变的情况下,应将直流无刷电机换相时机从几何中性线处调整到物理中型线处.仿真结果表明:此调整方案可使电机的电磁转矩提高约10%.

  7. 无位置传感器无刷直流电机的DSP控制%DSP Control of Brushless DC Motor Without Position Sensor

    Institute of Scientific and Technical Information of China (English)

    王宏伟; 梁晖

    2005-01-01

    设计了一种无位置传感器无刷直流电机(Brushless DC Motor,简称BLDCM)的变频调速系统.该系统基于PS21255智能功率模块(IPM)和TMS320LF2407A数字信号处理器(DSP),采用反电势法实现了WPS的BLDCM控制.整个系统集成度高,控制灵活,稳定性好.实验结果表明,该系统运行性能良好.

  8. Prediction and analysis of magnetic forces in permanent magnet brushless dc motor with rotor eccentricity

    Science.gov (United States)

    Liu, Z. J.; Li, J. T.; Jabbar, M. A.

    2006-04-01

    In design of permanent magnet motors for high-precision applications, it is sometimes necessary, early in the design stage, to have a detailed analysis of the effect of rotor eccentricity that may result from manufacturing imperfectness or use of fluid dynamic or aerodynamic bearings. This paper presents an analytical model for electromagnetic torque and forces in permanent magnet motors with rotor eccentricity. The model gives an insight to the relationship between the effect of the eccentricity and the other motor design parameters on the electromagnetic forces. It is shown that the calculated magnetic forces obtained from this model agree well with those obtained from numerical simulations that are very computationally demanding.

  9. Calculation Of The Brushless DC Motor Shaft Speed With Allowances For Incorrect Alignment Of Sensors

    Directory of Open Access Journals (Sweden)

    Kolano Krzysztof

    2015-09-01

    Full Text Available The paper treats of correcting calculation errors of the BLDC motor speed, based on the time elapsed between successive changes in the shaft position sensor signal. The developed method enables correction of errors of the deployment of sensors as well as rotating elements of the observation system of the motor shaft position. The correction algorithm performance was analysed with the aid of a model implemented in Matlab-Simulink environment. After confirming usefulness of the developed method through simulation, its usefulness was verified in real closed-loop feedback systems with a BLDC motor. The results of measurements carried out at the developed laboratory station are presented.

  10. Determination of torque speed current characteristics of a brushless DC motor by utilizing back-EMF of non-energized phase

    Science.gov (United States)

    Jang, G. H.; Yeom, J. H.; Kim, M. G.

    2007-03-01

    This paper presents a method to determine the torque constant and the torque-speed-current characteristics of a brushless DC (BLDC) motor by utilizing back-EMF variation of nonenergized phase. It also develops a BLDC motor controller with a digital signal processor (DSP) to monitor its current, voltage and speed in real time. Torque-speed-current characteristics of a BLDC motor are determined by using the proposed method and the developed controller. They are compared with the torque-speed-current characteristics measured by dynamometer experimentally. This research shows that the proposed method is an effective method to determine the torque constant and the torque-speed-current characteristics of the BLDC motor without using dynamometer.

  11. Determination of torque-speed-current characteristics of a brushless DC motor by utilizing back-EMF of non-energized phase

    Energy Technology Data Exchange (ETDEWEB)

    Jang, G.H. [Department of Mechanical Engineering, Hanyang University, 17 Haengdangdong, Seongdonggu, Seoul 133-791 (Korea, Republic of)]. E-mail: ghjang@hanyang.ac.kr; Yeom, J.H. [Department of Mechanical Engineering, Hanyang University, 17 Haengdangdong, Seongdonggu, Seoul 133-791 (Korea, Republic of); Kim, M.G. [Department of Mechanical Engineering, Hanyang University, 17 Haengdangdong, Seongdonggu, Seoul 133-791 (Korea, Republic of)

    2007-03-15

    This paper presents a method to determine the torque constant and the torque-speed-current characteristics of a brushless DC (BLDC) motor by utilizing back-EMF variation of nonenergized phase. It also develops a BLDC motor controller with a digital signal processor (DSP) to monitor its current, voltage and speed in real time. Torque-speed-current characteristics of a BLDC motor are determined by using the proposed method and the developed controller. They are compared with the torque-speed-current characteristics measured by dynamometer experimentally. This research shows that the proposed method is an effective method to determine the torque constant and the torque-speed-current characteristics of the BLDC motor without using dynamometer.

  12. Research Status and Development Trends of Bearingless Brushless DC Motor%无轴承无刷直流电机研究现状及发展趋势

    Institute of Scientific and Technical Information of China (English)

    刘奕辰; 朱熀秋

    2014-01-01

    A bearingless brushless DC motor is a new type of high performance motor , which integrates the function of magnetic bearings into a brushless DC motor .It has the characteristic of no friction , no wear , high speed , long service life of the magnetic bearings , and also has the advantages of high efficiency , small volume, simple structure of the brushless DC motor , and it has a potential vast development and application prospects .In this paper , the motor structure of the bearingless brushless DC and the principle of suspension force generation were introduced .A comprehensive overview of the bearingless brushless DC motors was presented , with particular emphasis on the motor structure and the control strategy analysis .On the basis of the superiority and the existence problems of the bearingless brushless DC , the research development trend of the bearingless brushless DC motor was analyzed in this paper .The results provided the reference for the fur-ther study on the bearingless brushless DC motor.%无轴承无刷直流电机是一种高性能的新型电机,它将无刷直流电机和磁悬浮轴承功能集成一体,使其不仅具备磁轴承无摩擦、无磨损、高速度、寿命长等特点,还具有无刷直流电机的效率高、体积小、结构简单的优势,潜在发展和应用前景非常广阔。本文介绍无轴承无刷直流电机的结构特点、悬浮力产生的原理,从电机结构、控制策略方面分析了无轴承无刷直流电机的国内外发展现状,并根据无轴承无刷直流电机的优势及存在的问题,分析了未来无轴承无刷直流电机的研究发展趋势,为今后进一步开展无轴承无刷直流电机的研究提供参考。

  13. Calculation Of The Brushless DC Motor Shaft Speed With Allowances For Incorrect Alignment Of Sensors

    OpenAIRE

    2015-01-01

    The paper treats of correcting calculation errors of the BLDC motor speed, based on the time elapsed between successive changes in the shaft position sensor signal. The developed method enables correction of errors of the deployment of sensors as well as rotating elements of the observation system of the motor shaft position. The correction algorithm performance was analysed with the aid of a model implemented in Matlab-Simulink environment. After confirming usefulness of the developed method...

  14. 电动自行车用无刷直流电机控制系统设计%Brushless DC Motor of Electric Bicycle Control System Design

    Institute of Scientific and Technical Information of China (English)

    钟晓伟; 宋蛰存; 许刚

    2011-01-01

    根据以无刷直流电机为驱动电机的电动自行车工作原理,设计了一种以ATmega16单片机为控制核心的电动自行车用无刷直流电机控制系统,给出了系统详细的硬件电路和软件设计方法.在MATLAB/Simulink环境下仿真得出适当的速度环与电流环调节器参数值.与传统的专用模拟控制器相比,具有更大的灵活性、可靠性,容易实现附加功能和全数字化控制.%According to brushless DC motor-driven electric motor bike working principle, a brushless DC motor of electric bicycle control system based on ATmega16 microcontroller was designed, a detail of hardware circuit and software design methods were given. In MATLAB/Simulink simulation environment to draw the appropriate speed loop and current loop regulator parameters. Compared to the traditional specific analog controller, it had greater flexibility,reliability, also was easy to implement additional features and fully digital control.

  15. Development of a hermetically sealed brushless DC motor for a J-T cryocooler

    Science.gov (United States)

    Joscelyn, Edwin; Hochler, Irwin; Ferri, Andrew; Rott, Heinz; Soukaris, Ted

    1996-01-01

    This development was sponsored by Ball Aerospace for the Cryogenic On-Orbit LongLife Active Refrigerator (COOLLAR) program. The cryocooler is designed to cool objects to 65 K and operate in space for at least 7 years. The system also imports minimal impact to the spacecraft in terms of vibration and heat. The basic Joule-Thompson cycle involves compressing a working fluid, nitrogen in this case, at near-constant temperature from 17.2 KPa to 6.89 MPa. The nitrogen is then expanded through a Joule-Thompson valve. The pure nitrogen gas must be kept clean; therefore, any contamination from motor organic materials must be eliminated. This requirement drove the design towards sealing of the motor within a titanium housing without sacrificing motor performance. It is estimated that an unsealed motor would have contributed 1.65 g of contaminants, due to the organic insulation and potting materials, over the 7-year life. This paper describes the motor electrical and mechanical design, as well as the sealing difficulties encountered, along with their solutions.

  16. Cogging Torque Reduction in Brushless DC Motors Using Slot-Opening Shift

    Directory of Open Access Journals (Sweden)

    SAIED, S. A.

    2009-02-01

    Full Text Available In this paper, two new methods for the stator skew are introduced. In contrary with the conventional stator skew, this paper is concentrate on the slot-opening skew. The simula-tion result by finite element shows a considerable reduction in the cogging torque of the motors, the new methods are applied to. Moreover the simulations justify that the back-EMF shape remains trapezoidal for various skew angles in contrary with that in the conventional skew, this fact makes the method highly applicable in BLDC motors.

  17. Nongrounded Common-Mode Equivalent Circuit for Brushless DC Motor Driven by PWM Inverter

    Science.gov (United States)

    Maetani, Tatsuo; Isomura, Yoshinori; Watanabe, Akihiko; Iimori, Kenichi; Morimoto, Shigeo

    This paper describes nongrounded common-mode equivalent circuit for a motor driven by a voltage-source PWM inverter. When the capacitance of the rotor was small, the phenomenon that polarity of the common mode voltage and shaft voltage reversed was observed. In order to model this phenomenon, the bridge type equivalent circuit is proposed. It is verified with the calculation and experiment that shaft voltage values and polarity are accurately calculated with the proposed equivalent circuit.

  18. Sliding mode control of reaction flywheel-based brushless DC motor with buck converter

    Institute of Scientific and Technical Information of China (English)

    Liu Gang; Zhang Cong

    2013-01-01

    Reaction flywheel is a significant actuator for satellites' attitude control.To improve out-put torque and rotational speed accuracy for reaction flywheel,this paper reviews the modeling and control approaches of DC-DC converters and presents an application of the variable structure system theory with associated sliding regimes.Firstly,the topology of reaction flywheel is constructed.The small signal linearization process for a buck converter is illustrated.Then,based on the state averaging models and reaching qualification expressed by the Lee derivative,the general results of the sliding mode control (SMC) are analyzed.The analytical equivalent control laws for reaction flywheel are deduced detailedly by selecting various sliding surfaces at electromotion,energy consumption braking,reverse connection braking stages.Finally,numerical and experimental examples are presented for illustrative purposes.The results demonstrate that favorable agreement is established between the simulations and experiments.The proposed control strategy achieves preferable rotational speed regulation,strong rejection of modest disturbances,and high-precision output torque and rotational speed tracking abilities.

  19. 基于DSP的无刷直流电机控制系统的设计%Design of Brushless DC Motor System Based on DSP

    Institute of Scientific and Technical Information of China (English)

    王艳; 王毓顺; 王惠; 魏萍; 陈孝富; 周瑞君

    2015-01-01

    通过分析无刷直流电机的数学模型,建立了基于DSP的无刷直流电机控制系统仿真模型.采用数字PID算法来设计控制器,通过Matlab仿真,验证了该方法的优越性,系统可以可靠地运行.仿真结果表明,采用此控制方法,系统响应快、抗扰能力强.%On the basis of brushless DC motor mathematical model analysis,the establishment of a brushless DC motor control system simulation model based on DSP.In this paper,PID control strategy is used to design the control er,through the Matlab simulation,verified the superiority of this method,the system can run reliably.The simulation results show that,by using this control method,the system response speed,strong anti disturbance ability.

  20. Study of Brushless DC Motors DTC Based on Simulink%基于Simulink无刷直流电机直接转矩控制研究

    Institute of Scientific and Technical Information of China (English)

    梅亮; 刘景林; 董亮辉; 马银龙

    2013-01-01

    Because of direct torque control technology in the application of brushless DC motor,torque ripple and over shoot were reduced,therefore operating performance of brushless DC motor was improved.To reduce torque ripple,to control torque by closed-loop control,adopted double hysteresis control to realize the stator flux 3 points control,then the electric torque was controlled,and a DTC system model was constructed with Matlab/Simulink,simulation results were presented,it's shown the model was effective.%将直接转矩控制(DTC)技术应用于无刷直流电机(BLDC),抑制了转矩波动,而且转速无超调,提高了无刷直流电机运行性能.本文为抑制转矩波动,对转矩进行闭环控制,采用双滞环比较器实现定子磁链3点控制,从而实现了对电磁转矩的控制,并搭建了直接转矩控制系统Matlab/Simulink模型,仿真结果表明该控制方法有效.

  1. The Study of Permanent Magnet Brushless DC Motor%对永磁无刷直流电机的研究

    Institute of Scientific and Technical Information of China (English)

    杨杰城

    2016-01-01

    随着我国科技不断发展,永磁无刷直流电机已成为电力电子一体化高科技产品,凭借其结构简单、运行可靠、效率高,在航天、医学、家用民用产品制作中得到广泛应用。文章对永磁无刷直流电机设计、控制以及建模方法进行分析,展现其对生产起到的重要作用。%With the continuous development of science and technology in our country,permanent magnet brushless dc motor has become power and electricity integration high-tech products.With its simple structure,reliable operation,high efficiency,it has been widely used in the aerospace,medical,household production.In this paper,the design,control,and modeling methods of permanent magnet brushless dc motor are analyzed.

  2. Brushless DC motor control system based on expert PID%基于专家PID的直流无刷电机控制系统*

    Institute of Scientific and Technical Information of China (English)

    张浩; 吴新开

    2015-01-01

    The brushless DC motor has the characteristics of time varing, nonliner, uncertainty and hardly modeling, so it is difficult to obtain ideal control effect by using conventional PID control. It is hoped to find a high-performance speed control scheme through the theory and practical research of expert PID. Based on the experiment platform of commonly used brushless motor speed control for multi rotor aircraft, the encoder is applied to measure the rotational speed and realize its closed-loop control. The introduction of brushless motor speed PID controller has opened up new ideas for motor control and attitude control of multi rotor aircraft.%由于直流无刷电机存在时变性、非线性、不确定性、难以建模等特点,采用常规的PID很难达到理想的控制效果。通过专家PID控制理论并结合实践研究,提出一种高性能的速度控制方案。基于多旋翼飞行器常用的无刷电机转速控制这一实验平台,采用编码器测速实现无刷电机的闭环控制。无刷电机速度PID控制器的引入,开辟了多旋翼飞行器电机控制和姿态控制的新思路。

  3. 基于PIC单片机的直流无刷电机驱动控制器%Brushless DC Motor Controller Based on PIC MCU

    Institute of Scientific and Technical Information of China (English)

    吕仲军; 刘泽潮

    2014-01-01

    介绍了一种基于PIC18Fxx单片机的直流无刷电机的控制器;实现了电机的过流保护、欠压保护、PWM调速和速度闭环控制;设计了主要的硬件电路;并给出了部分软件流程图。通过实验与仿真验证了系统的可靠性与稳定性。%This paper introduces a brushless DC motor controller based on the PIC 18Fxx MCU.The Motor Hall signal acquisition , overcurrent protection , undervoltage protection , PWM speed control and speed closed-loop control are realized .The main hardware circuit and the flowchart of software are designed .The reliability and stability of the system is verified by experiment and simulation .

  4. Unbalanced Magnetic Pull Effect on Stiffness Models of Active Magnetic Bearing due to Rotor Eccentricity in Brushless DC Motor Using Finite Element Method

    Directory of Open Access Journals (Sweden)

    Bangcheng Han

    2013-01-01

    Full Text Available We firstly report on an investigation into the unbalanced magnetic pull (UMP effect on the static stiffness models of radial active magnetic bearing (RAMB in brushless DC motor (BDCM in no-loaded and loaded conditions using the finite element method (FEM. The influences of the UMP on the force-control current, force-position, current stiffness, and position stiffness of RAMB are clarified in BDCM with 100 kW rated power. We found the position stiffness to be more susceptible to UMP. The primary source of UMP is the permanent magnets of BDCM. In addition, the performance of RAMB is affected by the UMP ripples during motor commutation and also periodically affected by the angular position of rotor. The characteristic curves of RAMB force versus control current (or rotor position and angular position of rotor affected by the UMP are given. The method is useful in design and optimization of RAMB in magnetically suspended BDCMs.

  5. Torque simulation of wind turbine based on brushless DC motor%基于无刷直流电机的风力机转矩模拟

    Institute of Scientific and Technical Information of China (English)

    郭天勇; 赵庚申; 赵耀; 程如岐; 赵二刚; 祁超

    2011-01-01

    In order to solve the problem that the study of wind power generation was restricted by nature conditions, this paper proposed a novel simulation scheme by using brushless DC motor instead of wind turbine, the torque imitation was implemented by controlling the DC side current, and the current loop adopted the control method of radial basis function neural network combined with PI control. A system simulation model was built by Matlab/Simulink, and a hardware platform based on brushless DC motor and permanent magnet generator was also established, which was controlled by DSP. Simulation and experimental results were consistent with theoretical torque, and the torque ripple of brushless DC motor was effectively reduced. This control method is simple with high control precision, and can provide a new idea for the design of the simulation system.%针对风力发电技术的研究受到自然条件制约的问题,该文提出了一种新的利用无刷直流电机来代替风力机的模拟方案,通过控制无刷电机直流侧电流的方式实现转矩控制,电流环采用径向基函数神经网络与PI调节相结合的控制策略.利用Matlab/Simulink建立系统仿真模型,并搭建了基于DSP控制的无刷直流电机+永磁发电机的硬件平台,仿真和试验结果都与理论转矩相吻合,并有效降低了无刷电机的转矩脉动.该方法控制简单、精度高,为实际模拟系统的设计提供了一种新的思路.

  6. 四程脉宽调制模型对无传感器无电刷直流电机控制系统中换向力矩波动的影响%Influence of PWM Modes on Commutation Torque Ripples in Sensorless Brushless DC Motor Control System

    Institute of Scientific and Technical Information of China (English)

    张相军; 陈伯时

    2001-01-01

    This paper introduces four PWM modes used in the sensorless brushless DC motor control system, analyzes their different influences on the commutation torque ripple in detail, and selects the best PWM mode in four given types to reduce commutation torque ripple of Brushless OC(BLDC) motors. Simulation and experimental results show that the selection is correct and practical.

  7. 永磁无刷直流电机在打草机设计中的应用研究%Study on Application of Permanent Magnet Brushless DC Motor in Grass Trimmer Design

    Institute of Scientific and Technical Information of China (English)

    杨闯; 王国辉

    2014-01-01

    结合永磁无刷直流电机设计和应用,以Φ300 mm、DC36 V打草机为例,从电池包空载放电时间、切割效率、单电池包工作时间、抗过载性及结构优化设计等五个方面分析永磁无刷直流电机与永磁有刷直流电机的区别,得出永磁无刷直流电机性能占优的结论。%Take the Φ300 mm DC36V grass trimmer for example, combined with the design and application of permanent magnet brushless DC motor, the author analyzes the difference between permanent magnet brushless DC motor and permanent magnet brush DC motor from five aspects such as battery pack discharge time, cutting efficiency, single battery pack working time, anti-overload resistance and structural optimization design, and comes to the conclusion that permanent magnet brushless DC motor superiors.

  8. 无刷直流电动机不导通相电流分析%Analysis of Floating Phase Current in Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    王璞; 解恩; 翟猛

    2012-01-01

    分析了无刷直流电动机在三相六状态及不同的PWM方式下,绕组续流期间不导通相电流,并且指出各有不同.对常用的各种PWM方式通过原理分析及数学推导,得出不导通相电流存在的时段和幅值趋势.并通过实验测试,验证了分析结果.%The floating phase current during the free-wheeling and the difference of the brushless DC motor operating in three-phase-six-states and different PWM modes were analysed. The conclusion of existing time and amplitude trend were achieved by theory analysis and mathematical deduction of common PWM modes. The result was verified through the experiment test.

  9. Simulation of Brushless DC Motor Control System Based on Matlab%无刷直流电机控制系统的Matlab仿真

    Institute of Scientific and Technical Information of China (English)

    吴松华; 叶汉民

    2011-01-01

    通过对无刷直流电机控制系统的研究,提出了反电势控制方法.即通过线性分段法获得反电动势,构建无刷直流电机(Brushless DC Motor,BLDCM)的本体模块,采用双闭环控制方案(转速环由PID调节器构成,电流环由电流滞环调节器构成)建立仿真控制系统.利用仿真对所提出的方法进行了验证.

  10. Closed loop performance of a brushless dc motor powered electromechanical actuator for flight control applications. [computerized simulation for Shuttle Orbiter applications

    Science.gov (United States)

    Demerdash, N. A.; Nehl, T. W.

    1980-01-01

    A comprehensive digital model for the analysis and possible optimization of the closed loop dynamic (instantaneous) performance of a power conditioner fed, brushless dc motor powered, electromechanical actuator system (EMA) is presented. This model was developed for the simulation of the dynamic performance of an actual prototype EMA built for NASA-JSC as a possible alternative to hydraulic actuators for consideration in Space Shuttle Orbiter applications. Excellent correlation was achieved between numerical model simulation and experimental test results obtained from the actual hardware. These results include: various current and voltage waveforms in the machine-power conditioner (MPC) unit, flap position as well as other control loop variables in response to step commands of change of flap position. These results with consequent conclusions are detailed in the paper.

  11. The matlab simulation of brushless DC motor control system%无刷直流电机控制系统的matlab仿真

    Institute of Scientific and Technical Information of China (English)

    吴松华; 叶汉民

    2011-01-01

    通过对无刷直流电机控制系统的研究,提出了反电势控制方法.即通过线性分段法获得反电动势,构建无刷直流电机(brushless dc motor BLDCM)的本体模块,采用双闭环控制方案(转速环由PID调节器构成,电流环由电流滞环调节器构成)建立仿真控制系统.利用仿真对所提出的方法进行了验证.

  12. Design and Study of Dual-Redundancy Brushless DC Motor for Actuator Servo System%舵机用双余度无刷直流电动机设计研究

    Institute of Scientific and Technical Information of China (English)

    高金行; 戴志勇; 全兴源; 艾于琛

    2011-01-01

    以舵机用双余度无刷直流电动机为研究对象,通过数学建模,对无刷直流电动机进行性能仿真,重点介绍样机被测波形及性能数据列表,分析余度换向性能的关键技术,以实现性能调试最优.%A study of dual redundant brushless DC motor for actuator servo system was given. With the mathematical model of brushless DC motor, the simulation performance was shown. The waveforms of BLDC motor were introduced. The performance data of motor was listed. The key technology of commutation was analyzed. The performance was made perfectly.

  13. Design of and Research on Brushless DC Motor for Compressors%压缩机用无刷直流电机的设计与研究

    Institute of Scientific and Technical Information of China (English)

    彭峰; 谷爱昱; 梁德志; 罗志伟

    2015-01-01

    针对电机的性能要求指标,根据电机电磁设计方法来确定电机的主要尺寸。无刷直流电机的转矩波动会引起电机的振动、产生电机噪声,从而影响电机的性能。齿槽转矩是引起电机转矩波动的重要因素,基于 Maxwell 建立该电机的二维模型,对其进行有限元分析,并利用不等厚永磁体的方法来降低该电机的齿槽转矩。最后通过 Ma x-well仿真对比,验证降低齿槽转矩方法的可行性。%To meet the motor performance re-quirements ,the main dimensions of the motor are determined according to the electromagnetic design method of the motor.The torque ripple of brush-less DC motor can cause the vibration of the motor and generate motor noise,thereby affecting motor performance.Cogging torque is one of the impor-tant factors causing motor torque fluctuation. Based on Maxwell,two dimensional model of the motor is established to carry out finite element a-nalysis.And methods like permanent magnet of unequal thickness are used to reduce the cogging torque in the motor. Finally, through Maxwell simulation, results verify the feasibility of the method for reducing cogging torque.

  14. Adaptive GA-ADRC in Torque Ripple Reduction of Brushless DC Motor%自适应GA-ADRC在无刷直流电机转矩脉动抑制中的研究

    Institute of Scientific and Technical Information of China (English)

    刘慧博; 王静

    2012-01-01

    提出一种新型的无刷直流电机电磁转矩脉动抑制方法,该方法通过控制无刷直流电机导通相线电流跟踪给定电流来抑制电机的电磁转矩脉动.首先分析无刷直流电机数学模型,建立基于自适应遗传算法的无刷直流电机控制系统模型,由于自适应GA-ADRC控制器不需要无刷直流电机模型参数就可以实现干扰补偿,因此可以独立设计自适应GA-ADRC控制器.对文中所提出自适应GA-ADRC控制算法与经典PID控制算法的控制效果对比分析,控制效果明显优于传统PID控制效果.%The traditional PID control algorithm cannot satisfy the performance index of the brushless DC motor system because of the disadvantages of electromagnetic torque ripple, high complexity of detection method and control algorithm, and higher cost of current brushless DC motor. A novel electromagnet torque ripple suppression method of brushless DC motor was proposed in this paper. By virtue of controlling the conduction phase current of the brushless DC motor to track the given current, the motor electromagnet torque ripple was suppressed. The mathematical model of the motor was analyzed and a control system model of the brushless DC motor based on adaptive genetic algorithm was established. Since the adaptive GA-ADRC controller can realize disturbance compensation without model parameters of brushless DC motor, the GA-ADRC controller was independently designed. The comparative analysis shows that the proposed GA-ADRC control algorithm is obviously superior to that of the classical PID control algorithm.

  15. 无刷直流电动机调压系统BUCK直流变换仿真%Simulation on BUCK DC Transformer of Brushless DC Motor Voltage Regulation System

    Institute of Scientific and Technical Information of China (English)

    张旭

    2016-01-01

    In order to improve the brushless DC motor voltage regulation system voltage conversion efficiency and reduce power consumption, based on BUCK transformer chopper voltage regulation technology was put forward. In this paper elaborat-ed the circuit structure and mathematical model of brushless DC motor with BUCK mode, analyzed technology of DC converter and BUCK dc transform. Take advantage of MATLAB software SIMULINK module modeling BUCK DC converter, simula-tion for BUCK DC transform under the 20kHz working frequency, got the switch tube gate trigger pulse, inductive voltage and inductance current, output voltage, switching tube and diode current simulation curve. The simulation results and theoretical analysis of waveform basically the same, the rationality was proved of BUCK DC converter model.%为了提高无刷直流电动机调压系统电压转换效率、降低功率消耗,提出基于BUCK变换的斩波调压技术。在阐述BUCK模式下无刷直流电动机电路结构、数学模型基础上,对直流变换器和BUCK直流变换技术进行分析。利用MATLAB软件SIMULINK模块对BUCK直流变换器进行建模,对20kHz工作频率下BUCK直流变换进行仿真,得到开关管门极触发脉冲、电感电压、电感电流、输出电压、开关管电流和二极管电流仿真曲线。仿真结果与理论分析波形基本一致,表明BUCK直流变换器模型的合理性。

  16. 无刷直流电机的定频积分控制%Constant Frequency Integration Control for Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    贺虎成

    2013-01-01

    A constant frequency integration control method was proposed for brushless DC motor.Making use of the mathematical model and the dynamic equation of the star-type three-phase six-state BLDCM,the relationship between the motor speed,the load torque,the motor parameters and inverter duty cycle was analyzed.Appling constant frequency integration control theory,the motor speed control can be achieved by adjusting the duty cycle.Finally,the presented BLDCM constant frequency integration control method was simulated,and the simulation results confirmed the validity and feasibility of the theoretical analysis.%为改善无刷直流电机(BLDCM)调速系统的性能,提出了BLDCM的定频积分控制方法.利用星型三相六状态BLDCM的数学模型和动态方程,分析了BLDCM速度、负载转矩、电机自身参数和逆变器占空比之间的关系,提出了运用定频积分控制原理,通过调节占空比实现对电机速度的控制.对提出的BLDCM定频积分控制方法进行了仿真研究,仿真结果验证了理论分析的正确性与可行性.

  17. 一种抑制无刷直流电机转矩脉动的新方法%A Method to Suppress Torque Ripple of Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    谢少华; 瞿遂春

    2015-01-01

    对无刷直流电机转矩脉动产生的原因进行全面分析,提出增加前级直流变换器抑制转矩脉动的新方法,使用buck直流变换器,通过调整逆变器的母线电压来抑制转矩脉动,在MATLAB/Simulink环境下基于该方法搭建无刷直流电机仿真模型,并对系统进行仿真分析。仿真结果表明,该方法能够有效抑制无刷直流电机转矩脉动。%Analyzes comprehensively the torque ripple causes of brushless DC motor, and proposes a new method of adding the first stage DC converter to control torque ripple. By using buck DC converter and adjusting bus voltage of the inverter to suppress the torque ripple, on the basis establishes brushless DC motor model in MATLAB/Simulink and simulates the system. The result indicates that the method suppresses the torque ripple of brushless DC motor effectively.

  18. 永磁无刷直流电动机三维温度场分析%Analysis of Three-Dimensional Temperature Field of Permanent Magnet Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    史忠震; 杨立; 李青青; 许贞俊

    2013-01-01

    利用Ansys有限元分析软件对永磁无刷直流电动机进行了温度场分布研究,应用传热学理论建市了电动机三维暂态温度场计算模型,根据永磁直流无刷电机内热交换理论给出了边界条件,并在求解域内给出了一定的假设,对其进行分析计算,得到了永磁直流无刷电机各部分温度场分布,并与实测结果基本一致,说明该分析方法对于永磁直流无刷电机的设计和优化具有一定的参考意义.%The distribution of the temperature field of the permanent magnet brushless DC motor was analysed by ansys finite element analysis software.A motor three-dimensional transient temperature field calculation model was establised based on heat transfer theory.Boundary conditions were given by the permanent magnet brushless DC motor heat exchange theory,and the certain assumptions in the solution domain were given.The temperature distribution of the various parts of permanent magnet brushless DC motor was achieved by its analysis and calculation,which was consistent with the measured results.The analysis method for permanent magnet brushless DC motor design and optimization has certain reference value.

  19. Control System of Two-Phase Brushless DC Gyro Motor Based on DSP%基于DSP的两相无刷直流陀螺电机稳速系统

    Institute of Scientific and Technical Information of China (English)

    吴梅锡; 付鲁华; 林玉池

    2013-01-01

    The research of the influence of gyro motor speed stability on the north-finding result is studied in order to improve the gyro north-finding precision. The paper introduces a two-phase brushless DC gyro motor control system based on TMS320LF2407A. First,it expounds the two-phase brushless DC motor's working principle. Then through the design of the hardware and software system, the close-loop control of two-phase brushless DC gyro motor is realized. The experimental results show that,the system can drive the brushless DC gyro motor well starting,braking and smooth running. The precision of the steady speed is less than 10~6 and the characteristics of the system satisfy the gyroscope demand.%为了进一步提高陀螺仪的寻北精度,分析研究了陀螺电机转速大小和转速精度对寻北结果的影响.在此基础上设计了一种基于TMS320LF2407A的两相无刷直流陀螺电机控制系统,阐述了两相无刷直流电机的工作原理,给出了电机的简化结构及数学模型,并通过对硬件系统和软件算法的设计实现了两相无刷直流陀螺电机的闭环控制.实验结果表明:系统可以很好地完成电机的启动、制动和平稳运行,转速精度优于10-6,满足陀螺仪的工作要求.

  20. Study of Dual-redundancy Brushless DC Motor in Electric Aircraft Braking System%飞机刹车用双余度无刷直流电动机的研究

    Institute of Scientific and Technical Information of China (English)

    高金行; 全兴源; 戴志勇; 曹杨

    2012-01-01

    A study of dual redundant brushless DC motor in electric aircraft braking system was given. Based on Ansoft, the motor magnetic circuit was analyzed. The structure parameters were optimized. With the mathematical model of brushless DC motor, the simulation performance was shown. The key technologies of Commutation were analyzed. As shown of experiment, the design is reasonable and correct. Key words; dual redundant brushless DC motor; finite element analysis; performance simulation ; key developing technologies%以全电飞机刹车用双余度无刷直流电动机为研究对象,借助Ansoft软件对电机磁路进行分析计算,优化结构参数,并对其进行性能仿真.重点论述了确保无刷余度电机性能最优的调试关键技术.经过样机性能测试与设计相符,满足使用要求.

  1. Control of Double Inverse Rrotors Brushless DC Motor in Autonomous Underwater Vehicle%无人水下航行器用双转子无刷直流电机的控制

    Institute of Scientific and Technical Information of China (English)

    张力; 季小尹; 张克涵

    2012-01-01

    根据无人水下航行器的任务特点,研制出无位置传感器的双转子对转无刷直流电机推进动力装置.介绍了无刷直流电机利用专门设计的转换电路,直接检测电机绕组线电压获得功率管驱动信号的方法,研究了无位置传感器无刷直流电机的起动方法,通过样机实验验证了系统设计的合理性.%As to the specific assignment autonomous underwater vehicle, its pushing momentum device which use sensorless double inverse rotors brushless DC motor is developed. The method which use a designed specially conversion circuit measuring the line voltage of motor's winding directly to achieve the power tubes' driving signal is introduced in this paper, the method of sensorless brushless DC motor's startup is also studied. It is showed that the design is rational by prototype trial of a brushless DC motor.

  2. 无刷直流电机RBF磁场定向控制及监控系统设计%Design of RBF field-oriented control and monitoring system for brushless DC motor

    Institute of Scientific and Technical Information of China (English)

    肖金凤; 肖杞铭; 曾铁军

    2016-01-01

    The available torque ripple suppression method of brushless DC motor has unsatisfactory suppression effect,or good ripple suppression effect while owning complicated learning algorithm,and is bad for promotion. To solve these problems, the field⁃oriented control system of the brushless DC motor was designed,which combines the RBF neural network and field⁃oriented control,and uses Luminary 615 microcontroller and brushless motor dedicated chip MC33035. The Visualbasic⁃based upper computer monitoring system matching with the motor was developed,which can realize the graphical display of parameters such as rotate speed and setting of motor parameters with low cost. The experimental results show that the designed RBF field⁃oriented control system of brushless DC motor has small torque ripple and high control accuracy.%针对现有无刷直流电机转矩脉动抑制方法存在抑制效果不理想,或脉动抑制效果好但学习算法复杂,不利于推广的问题,将RBF神经网络与磁场定向控制相结合,选用Luminary 615微控制器和无刷电机专用芯片MC33035,设计了无刷直流电机磁场定向控制系统。并开发基于Visual Basic的配套电机上位机监控系统,能在低成本下实现转速等参数的图形化显示及电机参数等的设置。实验结果表明,所设计的无刷直流电机RBF磁场定向控制系统转矩脉动小、控制精度高。

  3. 基于单片机的无刷直流电动机控制系统设计%Design of Brushless DC Motor Control System Based on MCU

    Institute of Scientific and Technical Information of China (English)

    闵次凡

    2012-01-01

    介绍了无刷直流电动机(BLDCM)的基本结构和工作原理.重点阐述了利用8751单片机控制无刷直流电动机的换相、调速、限制启动电流、正反转的原理和实现方法以及程序设计.%This paper introduces the basic structure and working principle of brushless DC motor (BLDCM). This paper expounds the principle and method to control the phase transformation, speed regulation, starting current limit, reverse rotation of brushless DC motor by single chip microcomputer 8751 , and the program design.

  4. 基于Matlab无刷直流电机控制系统仿真%The simulation of brushless DC motor control system based on Matlab

    Institute of Scientific and Technical Information of China (English)

    王亚茹; 宋晓梅; 何程; 巩学芳

    2015-01-01

    In order to reduce the design cost and save design time of brushless DC motor ,in Matlab/Simulink environment ,the control principle and the mathematical model of BLDCM are analyzed to conduct research related to control system .In the modular notion of control system ,by the combina‐tion of the isolated blocks and S‐function ,the model of BLDCM can be established .This system is con‐trolled by the speed and current double loop .Through a classical PID joined to the speed loop ,the ad‐justment of speed achieves smoothness .And a current controller is completed in the current loop on the principle of hysteresis current track PWM inverter .The simulation results prove that the system has good static and dynamic charactertics ,and verify the rationality and validity of this method .By studying the simulation model of BLDCM based on Matlab ,a new approach for designing and debug‐ging motors is provided .%为了降低无刷直流电机(brushless DC motor ,BLDCM )的设计成本,节省设计时间,在Matlab/Simulink环境下,通过分析BLDCM 的控制原理及数学模型,进行BLDCM 控制系统的仿真研究。利用控制系统的模块化思想,分别建立独立的功能模块,再结合S函数,以此构建出BLDCM 控制系统的仿真模型。系统采用速度、电流的双闭环控制,在速度外环加入经典的PID控制以实现转速的平稳调节,电流内环控制采用滞环电流跟踪型PWM 实现。仿真结果表明,控制系统具有良好的静态、动态特性,同时验证了该方法的合理性和有效性。

  5. 两相无槽无刷直流电机的无位置传感器控制%Sensorless control of two-phase slotless brushless DC motor

    Institute of Scientific and Technical Information of China (English)

    钟德刚; 方浩

    2011-01-01

    In order to eliminate the shortcomings of brushless DC motor control based on hall sensors and realize the sensorless control of two-phase slotless brushless DC motor,the structure of stator and rotor ,the winding connections of two-phase slotless brushless DC motor and the zero-crossing of back EMF detection method were analyzed. The hardware system and software system designs of two-phase slotless brushless DC motor were presented. The test results indicate the feasibility and stability of control system. A simple control circuit, low cost,less torque ripples and high stability are the advantages of the design presented.%为消除无刷直流电机基于霍尔位置传感器控制存在的缺点,实现两相无槽无刷直流电机的无位置传感器控制,首先在分析了两相无槽无刷直流电机的定、转子结构、绕组连接方式以及反电势过零点检测法的工作原理基础上,论述了两相无槽无刷直流电机无位置传感器控制的硬件系统和软件系统的设计方案,并对两相无刷直流电机进行了试验.试验结果证明了系统的可行性、稳定性.结果表明,该控制方案具有线路简单、成本低、转矩脉动小、系统运行稳定等优点.

  6. Three-Dimensional Finite Element Magnetic Field Computations and Performance Simulation of Brushless DC Motor Drives with Skewed Permanent Magnet Mounts.

    Science.gov (United States)

    Alhamadi, Mohd A. Wahed

    1992-01-01

    A three dimensional finite element (3D-FE) method for the computation of global distributions of 30 magnetic fields in electric machines containing permanent magnets is presented. The formulation of this 3D-FE method is based on a coupled magnetic vector potential - magnetic scalar potential (CMVP-MSP) approach. In this CMVP-MSP method, the modeling and formulations of permanent magnet volumes, suited to first and second order MVP 3D-FE environments as well as first order MSP 3D-FE environment, are developed in this dissertation. The development of the necessary 3D-FE grids and algorithms for the application of the CMVP -MSP method to an example brushless dc motor, whose field is three dimensional due to the skewed permanent magnet mounts on its rotor, is also given here. It should be mentioned that the entire volume of the case-study machine from one end to another is considered in the global magnetic field computations. A complete set of results of application of the CMVP-MSP method to the computation of the global 3D field distributions and associated motor parameters under no-load and load conditions are presented in this dissertation. In addition, a complete simulation of the dynamic performance of the motor drive system using the parameters obtained from the 3D-FE field solutions are presented for no-load and various other load conditions. All the above mentioned results are experimentally verified by corresponding oscillograms obtained in the laboratory. These results are also compared with results obtained from motor parameters based on various 2D-FE approaches, showing that for certain types of skewed permanent magnet mounts, 3D-FE based parameters can make significant qualitative and quantitative improvements in motor-drive simulation results.

  7. A Study of Direct Identification Method of Brushless DC Motor Parameters%无刷直流电动机参数直接辨识法研究

    Institute of Scientific and Technical Information of China (English)

    袁国珍; 齐蓉; 白文伟

    2013-01-01

    Against the brushless DC motor already in mass production, a new and practical parameter identification method called direct identification method was proposed. Based on the basic characteristics of the motor's equivalent circuit , the motor's parameter identification strategy was studied, which provided control parameters for precise control of motor. In order to verify the effectiveness of this method, a parameter identification simulation of a finished motor was used. The result indicates that this identification method is simple to implement, has a low computation, has recognition accuracy that can meet the engineering requirements, and is easier to be implemented than traditional identification methods.%针对已经量产、产品化的无刷直流电动机,研究了一种新的实用的无刷直流电动机参数辨识方法——直接辨识法.基于电机等效电路的基本特性,研究电机参数辨识策略,为精确控制电机提供控制参数.为验证该辨识方法的有效性,对一个成品电机进行参数辨识仿真,结果表明该辨识方法的优点是实现简单、运算量小、辨识精度可以满足工程要求,并且较传统辨识方法更易实现.

  8. Modeling Method of Brushless DC Motor Based on MATLAB%基于MATL AB的无刷直流电机建模方法

    Institute of Scientific and Technical Information of China (English)

    郭丹蕊; 林晓焕; 单星; 汪通

    2015-01-01

    根据分析得到的理想状态下的无刷直流电机各个方程,结合Matlab/simulink里相应图形化模块来搭建电机模型,并在文中列举了几个重要模块的作用。结合所给参数仿真得出曲线图,说明搭建的模型有较好的实用价值,验证了模型的正确性。%According to the brushless DC motor of each equation in the ideal state of the analysis,combined with Matlab/simulink in the corresponding graphical module to build the motor model, and cited the role of several important modules in the text. Combined with the given parameters of the simulation results graph illustrating the build model has good practical value to verify the correctness of the model.

  9. Simulation Analysis of Brushless DC Motors for Aircraft%飞机用无刷直流电动机系统仿真分析

    Institute of Scientific and Technical Information of China (English)

    马银龙; 尹航; 柯栋梁

    2011-01-01

    A novel method for modeling and simulation of the brushless DC motor system for Aircraft was presented. With this model,all the simulation of motor performance,fault protection,soft start can be realized. The mathematic model of the BLDCM was established. Under Simulink in Matlab 2010a,the simulation model of the BLDCM system can be modeled by the S-functions programming and modular design. Over-current,under-voltage and open phase protection were discussed to improve reliability. The reasonability was testified by the coincidence of the simulation results and theory analysis.%提出了一种新的飞机用无刷直流电动机的系统建模方法,该模型可以实现电机性能、故障保护、软起动的综合仿真.根据无刷直流电动机的数学模型,在Matlab 2010a的Simulink环境下,采用S函数和模块化建模方法,建立了相应的系统仿真模型.为提高可靠性,较详细地讨论了过流、欠压和缺相故障的保护.仿真实验结果与理论分析一致,验证了模型的合理有效性.

  10. 直流无刷高速电机驱动电路设计及改进%Design and Improvement of the High - speed Brushless DC Motor Drive Circuit

    Institute of Scientific and Technical Information of China (English)

    石屾; 董春

    2011-01-01

    采用无传感器无刷直流低速电机专用调速控制芯片ML4425,设计制作了航模用直流无刷高速电机的控制器.针对目前航模用直流无刷电机速度高的特点,对用于直流无刷低速电机的传统ML4425控制系统中的相关环节进行了改进,尤其是电机的启动、驱动和保护部分.简化了航模用直流无刷高速电机的控制系统,减少了成本.%In this paper,a dedicated control chip is used to design a drive circuit of a low speed sensorless DC brushless motor.This paper has done some change of the traditional control system of ML4425,in order to adapt to the high speed of the DC brushless motor used in aircraft model, especially in parts of start, drive and protect.Simplified the control system of the DC brushless motor,so it can reduce the cost.

  11. The Research on Simulation Model of DTC with Brushless DC motor%无刷直流电机直接转矩控制系统仿真研究

    Institute of Scientific and Technical Information of China (English)

    宫殿强

    2012-01-01

    In this paper, the basic structure of the brushless DC motor starting, contacting the Direct Torque Control, it deduced improved brushless DC motor direct torque control system. The improved brushless DC motor direct torque control system's software model based full analysis of direct torque control principles and components, was presented by means of Matlab / Simulink software. The simulation results showed that the improved direct torque control had favourable dynamics and statics.%从无刷直流电机的基本结构出发,联系直接转矩控制理论,提出了改进型无刷直流电机直接转矩控制系统,在对系统的基本原理和组成部分进行充分分析的基础上,利用Matlab/Simulink建立了无刷直流电机直接转矩控制系统的软件模型.仿真结果表明改进型直接转矩控制系统具有良好的动静态性能.

  12. 基于DSP的无刷直流电动机控制系统的研究与设计%Research and Design of Brushless DC Motor Control System Based on DSP

    Institute of Scientific and Technical Information of China (English)

    王宪磊; 王淑红

    2012-01-01

      介绍了无刷直流电动机的基本结构、工作原理和运行特性,简述了基于DSP的无刷直流电动机的控制策略,对无刷直流电动机双闭环控制系统的硬、软件设计作了详细论述。文章所述无刷直流电动机控制系统的设计方案,可以获得良好的速度控制性能。%  The basic structure, working principle and operation characteristics of brushless DC motor were introduced. The control strategy of brushless DC motor based on DSP was expounded, and the hardware and software design of the double closed loop control system was expounded in detail. The brushless DC motor control system described in this paper show good performance in speed control.

  13. Simulation of Brushless DC Motor with Kalman Filter%基于卡尔曼滤波器的无刷直流电动机仿真

    Institute of Scientific and Technical Information of China (English)

    吕志宽; 李声晋; 卢刚; 周勇

    2011-01-01

    对已有的无刷直流电动机数学模型进行详细的分析,并提出了一种基于卡尔曼滤波器的无刷直流电动机调速系统建模仿真方法.在Matlab/Simulink环境下,采用独立功能模块与S函数相结合的方法,依据现有电机控制系统构造了一种无刷直流电动机的调速系统仿真模型.仿真系统进行PI转速调节,电机反馈转速经卡尔曼滤波器滤波.仿真和试验结果与理论分析一致,证明所建立的无刷直流电动机状态方程正确,卡尔曼滤波器校正矩阵递推公式合理,为现实中的电机控制系统设计和调试提供了新方法.%Mathematical model of the Brushless DC motor was fristly analyzed. Furthermore, a new modeling and simulation method of the speed control system of BLDCM based on Kalman Filter was proposed. In Matlab/Simulink, the method of independent function models combining S-functions was adopted and simulation model of the speed control system was built on the basis of the electric machine control system. PI speed control was conducted with the simulation model and the electric machine speed feedback was filtered by Kalman Filter. The conformity simulation and experiment results and between theoretical analysis proves that the brushless DC motor state space formula is correct,that Kalman Filter correction matrix recursion formula is reasonable,and that the method provides new method for the electric machine control system design and adjustment.

  14. PWM调制下无刷直流电机的转矩脉动抑制%Torque Ripple Reduction of Brushless DC Motors by PWM Modes

    Institute of Scientific and Technical Information of China (English)

    孟光伟; 李槐树; 熊浩

    2011-01-01

    分析无刷直流电机在PWM调制下稳态时的换相过程,通过在换相期间的PWM调制来实现高、低速条件下的换相转矩脉动补偿控制,确定了保持换相期间非换相相电流幅值不变的换相时间.分析PWM调制方式对三相六状态二二导通无刷直流电机控制系统的影响,提出了在PWM-ON-PWM调制方式下的换相转矩脉动补偿控制,不但能够完全消除非换相期间由于关断相出现电流而引起的电磁转矩脉动,而且能够完全补偿由于换相而引起的转矩脉动,实现电机在低速和高速时的无转矩脉动控制.%The steady commutation process of brushless DC motor by PWM modes was analyzed, and realized phase conversion torque ripple compensation control under both low speed and high speed operation by PWM control in commutation period,and confirmed commutation time to hold amplitude of current in commutation period. The effect by PWM modes on a three-phase six-state 120°conduction brushless DC motor was analyzed,and proposed torque ripple compensation control in PWM_ON_PWM mode, which can not only entirely eliminate torque ripple resulted from the current emerging in the turn-off phase during non-commutation period but also compensate torque ripple caused by the commutation current during commutation period. The torque ripple can be effectively reduced under both low speed and high speed operation using torque ripple compensation control in PWM ON PWM mode.

  15. Generalized model of brushless dc generator

    Science.gov (United States)

    Vadher, V. V.; Kettleborough, J. Gordon; Smith, I. R.; Gerges, Wahid R.

    1989-07-01

    A generalized model is described for a brushless dc machine consisting of a multiphase synchronous machine with a full-wave bridge rectifier connected to its output terminals. The state-variable equations for the machine are suitable for numerical integration on a digital computer, and are assembled in a form which permits investigations to be made on the effects of different numbers of armature phase windings and different winding connections. The model has been used in both steady-state and transient studies on a number of generating units, with the detailed information which is provided being beneficial to design engineers. Comparisons presented between predicted and measured results illustrate the validity of the model and the mathematical techniques adopted, and confirm that accurate information on the performance of a brushless generator may be obtained prior to manufacture.

  16. Brushless DC motor drives supplied by PV power system based on Z-source inverter and FL-IC MPPT controller

    Energy Technology Data Exchange (ETDEWEB)

    Mozaffari Niapour, S.A.KH., E-mail: s.a.kh.mozaffari.niapour@gmail.com [Faculty of Electrical and Computer Engineering, University of Tabriz, 51664 Tabriz (Iran, Islamic Republic of); Danyali, S.; Sharifian, M.B.B.; Feyzi, M.R. [Faculty of Electrical and Computer Engineering, University of Tabriz, 51664 Tabriz (Iran, Islamic Republic of)

    2011-08-15

    Highlights: {yields} Employing the BLDC motor in water pumping systems. {yields} Utilizing the ZSI as a single-stage power converter in the PV water pumping systems based on BLDC motor. {yields} Improvement of the conventional IC MPPT method with the fuzzy logic control scheme to save more energy from the PV array. {yields} Taking the advantages of the DTC drive of the BLDC motor. {yields} Optimizing the water pumping system speed response characteristic by PSO. - Abstract: This paper discusses operation performance of a water pumping system consist of a brushless dc (BLDC) motor coupled a centrifugal pump and accompanying a Z-source inverter (ZSI) fed by a photovoltaic (PV) array, to be improved. Despite conventional double-stage power converters, this paper proposes utilizing a single-stage ZSI to extract the maximum power of the PV array and supply the BLDC motor simultaneously. Utilizing the ZSI provides some inherent advantages such as high efficiency and low cost, which is very promising for PV systems due to its novel voltage buck/boost capability. In addition, in order to precisely perform the maximum power point tracking (MPPT) of the PV array the fuzzy logic-incremental conductance (FL-IC) MPPT scheme is proposed. The proposed FL-IC MPPT scheme provides enough modification to the conventional IC method to enjoy an appropriate variable step size MPPT control signal for the ZSI. Moreover, direct torque control (DTC) is found more effective in comparison with hysteresis current control with current shaping to drive the BLDC motor, because it benefits from faster torque response, reduced torque ripple, less sensitivity to parameters variations, and simple implementation. In the mean time, due to the frequently variations of the PV power generation; delivered mechanical power to the centrifugal pump is variable. Thus, the BLDC motor should be driven with variable reference speed. In order to improve the speed transient response of the BLDC motor and enhance

  17. 基于TB6556 FG的降低无刷直流电机噪声的设计%Design for Reducing Noise of Brushless DC Motor Based on TB6556 FG

    Institute of Scientific and Technical Information of China (English)

    陈治宇; 黄开胜; 陈风凯; 田燕飞; 何建源

    2014-01-01

    A minitype brushless DC motor of optimal magnet chamfering for 180o sinusoidal driving was designed to reduce vibration and noise of the motor. Firstly sinusoidal drive system was designed with TB6556FG and TP4124AK for suppressing mutation of commutation current;Finite element analysis software of ANSYS was employed to analyze brushless DC motor, and to calculate the optimal magnet chamfering for suppressing torque ripple. The motor was manufactured, and the vibration and noise of brushless DC motor were reduced effectively. This method could improve the characteristics of motors, and it was significant value to reduce vibration and noise of motors.%为降低小型无刷直流电机的振动和噪声,设计了一种180º正弦波驱动的具有最佳磁极削角的无刷直流电机。采用TB6556FG控制器和IPM模块TP4124AK构建正弦波驱动系统,来抑制换向电流的突变。结合ANSYS有限元分析软件对无刷直流电机进行分析,计算出最佳的磁极削角尺寸,来抑制转矩脉动,并进行了样机试验,电机的振动和噪声抑制效果明显。该方法可有效改善电机性能,对降低电机的振动和噪声具有一定的工程应用价值。

  18. 无刷直流电机控制系统的设计研究%Design Study on the Brushless DC Motor Control System

    Institute of Scientific and Technical Information of China (English)

    王硕; 安霆

    2014-01-01

    为深入研究无刷直流电机的控制问题,基于PIC16 F877单片机构建了电机控制系统;采用绕组Y联结三相全控桥式电路设计了两两导通式换相控制模块,并给出了控制字表;研究了基于PWM法的变压调速技术,并给出了正、反转控制方法;另外,还对软件设计中的各程序模块进行了阐述。%In order to study the control problem of brushless DC motor deeply, this paper designs a control system based on the PIC16F877 single chip computer.It designs the commutation control module of two-two con-duction type based on three phase full-controlled bridge circuit of Y coupling, and presents the control digital ta-ble.It also studies the technology of adjusting speed by changing voltage based on PWM method, and shows the control method of forward and reverse rotation.The paper also elaborates the software design in the end.

  19. 无刷直流电机转子位置检测方法综述%Summary on Rotor Position Detection Method for Brushless DC Motors

    Institute of Scientific and Technical Information of China (English)

    赵一衡; 顾伟康; 陈亚彬; 曹翔

    2014-01-01

    由于受到传统开关器件的限制,大电流开关电源存在功率小、效率低等问题,因此在对PWM软开关技术进行分析后,利用AT89 C52单片机的中断方式输出频率和占空比可调的PWM脉冲,控制大功率开关管GT40 T101的通断,从而实现以模拟继电器的方式控制电路的通断。通过搭建电路验证了PWM软开关在控制大功率电源方面的优越性,对于实际的电气工程应用具有一定的参考价值。%The brushless DC motor (BLDCM) is an advanced mechanical electronic device.Rotor position detection method is an important part of the BLDCM.Traditional method with position sensor is not suitable the need for the current applications because of its own shortcomings, so the position detection method has been the research hotspot recently.The basic principle and research situation of sensorless detection methods are introduced , and their advantages and disadvantages are compared .It provides a certain theoretical basis for researching on sensorless and has certain value.

  20. Modeling and Implementation of Limited Angle Brushless DC Motor%有限转角直流无刷电机的建模与实现

    Institute of Scientific and Technical Information of China (English)

    苏宇; 张涛; 王相阳; 王金波

    2013-01-01

    有限转角直流无刷电机是靠改变输入的PWM的占空比驱动的,由于系统存在多变量和非线性,传统的方法难以建立准确的模型,导致控制精度低.提出一种采用对输入PWM进行采样计数的方法建立PWM与电机电枢两端电压的关系,再辅助ISE开发FPGA对电机进行模型实现的新方法,建立了一套测试系统中有限转角直流无刷电机仿真系统模型.通过模型校准和仿真结果分析,证明了方案的有效性.将模型进行FPGA实现,代替实际电机应用于测试系统中,验证了模型具有高精度与可靠性.%Limited angle brushless DC motor is driven by PWM which varies with the changing duty cycle, resulting in low precision of the traditional control system, so a new method was proposed to establish the relationship between the PWM and voltage across the motor armatures and to realize the model on FPGA with the help of ISE, Then a simulation model was built up. The method was proofed to be effective after calibrating and analyzing the simulation model. As the result of the real experiment implementing on FPGA and used in the test system instead of the actual motor, the model based on the method has high accuracy and reliability.

  1. 永磁无刷直流电动机在微型空压机中的应用%Application of Permanent Magnet Brushless DC Motor in Miniature Air Compressor

    Institute of Scientific and Technical Information of China (English)

    凌永骧; 张华宗; 余仁田

    2013-01-01

    Compared with the traditional DC motor and induction motor,permanent magnet brushless DC(BLDC) motor has more superior performance,widely used in many fields,and has a tendency to gradually replace other motors.In this paper,the development and application of permanent magnet brushless DC motor in the miniature air compressor are analyzed.%永磁无刷直流电动机(简称BLDC)与传统的直流电机及感应电动机相比,永磁无刷直流电动机具有更多优越的性能,在许多领域得到了广泛应用,有逐步取代其它电动机的趋势.本文对永磁无刷直流电动机在微型空压机中的应用和发展情况进行分析.

  2. 冰箱的直流无刷电机控制%Brushless DC Motor Control for Refrigerators

    Institute of Scientific and Technical Information of China (English)

    Padmaraja Yedamale

    2009-01-01

    无刷直流(Brushless DC,BLDC)电机相对于感应电机具有很多优点。BLDC电机支持无级变速,这可以提高能效并降低噪声。BLDC电机的速度一扭矩特性曲线是平直的,这使电机可以在较低的速度下运行,无需消耗更高电流即可产生相同扭矩。

  3. High-performance permanent magnet brushless motors with balanced concentrated windings and similar slot and pole numbers

    Science.gov (United States)

    Štumberger, Bojan; Štumberger, Gorazd; Hadžiselimović, Miralem; Hamler, Anton; Trlep, Mladen; Goričan, Viktor; Jesenik, Marko

    2006-09-01

    The paper presents a comparison between the performances of exterior-rotor permanent magnet brushless motors with distributed windings and the performances of exterior-rotor permanent magnet brushless motors with concentrated windings. Finite element method analysis is employed to determine the performance of each motor. It is shown that motors with concentrated windings and similar slot and pole numbers exhibit similar or better performances than motors with distributed windings for brushless AC (BLAC) operation mode and brushless DC (BLDC) operation mode as well.

  4. High-performance permanent magnet brushless motors with balanced concentrated windings and similar slot and pole numbers

    Energy Technology Data Exchange (ETDEWEB)

    Stumberger, Bojan [Faculty of Electrical Engineering and Computer Science, University of Maribor, Smetanova 17, 2000 Maribor (Slovenia)]. E-mail: bojan.stumberger@uni-mb.si; Stumberger, Gorazd [Faculty of Electrical Engineering and Computer Science, University of Maribor, Smetanova 17, 2000 Maribor (Slovenia); Hadziselimovic, Miralem [Faculty of Electrical Engineering and Computer Science, University of Maribor, Smetanova 17, 2000 Maribor (Slovenia); Hamler, Anton [Faculty of Electrical Engineering and Computer Science, University of Maribor, Smetanova 17, 2000 Maribor (Slovenia); Trlep, Mladen [Faculty of Electrical Engineering and Computer Science, University of Maribor, Smetanova 17, 2000 Maribor (Slovenia); Gorican, Viktor [Faculty of Electrical Engineering and Computer Science, University of Maribor, Smetanova 17, 2000 Maribor (Slovenia); Jesenik, Marko [Faculty of Electrical Engineering and Computer Science, University of Maribor, Smetanova 17, 2000 Maribor (Slovenia)

    2006-09-15

    The paper presents a comparison between the performances of exterior-rotor permanent magnet brushless motors with distributed windings and the performances of exterior-rotor permanent magnet brushless motors with concentrated windings. Finite element method analysis is employed to determine the performance of each motor. It is shown that motors with concentrated windings and similar slot and pole numbers exhibit similar or better performances than motors with distributed windings for brushless AC (BLAC) operation mode and brushless DC (BLDC) operation mode as well.

  5. 永磁无刷直流电机及其控制%Permanent-Magnet Brushless DC Motor and Its Control

    Institute of Scientific and Technical Information of China (English)

    夏长亮; 方红伟

    2012-01-01

    The permanent-magnet brushless DC motor(BLDC motor) has achieved a brilliant application in aerospace,military,automotive,office automation and household equipment industries,since it has the advantages of high efficiency,long lifetime,low noise and good torque-speed characteristics.The basic structure and operation of the BLDC motor is introduced,and various typical topologies of its driving circuits are also compared.Moreover,the torque ripple reduction,sensorless control,and flux-weakening speed control are investigated.Finally,the applications of BLDC motor are drawn and its development trend is discussed.%无刷直流电机因其高效率、长寿命、低噪声及良好的机械特性等优点,在航空、军事、汽车、办公自动化、家用电器等行业内得到了广泛的应用。本文系统阐述了无刷直流电机的基本结构和工作特点,比较分析了无刷直流电机几种典型的驱动电路拓扑结构。同时,对无刷直流电机的转矩波动抑制、无位置传感器控制、弱磁调速等技术进行了分析。最后,对其应用及未来发展趋势进行了探讨。

  6. 无刷直流电机无位置传感器控制系统仿真研究%The Simulation and Research of Sensorless Control System for Brushless DC motor

    Institute of Scientific and Technical Information of China (English)

    朱勇; 冯开平

    2013-01-01

      通过分析无刷直流电动机数学模型,利用Matlab/Simulink对无刷直流电机无位置传感器控制系统进行了建模和仿真。分别用Simulink库中自带的电机模型,反电动势过零点检测法、速度PI控制和电流滞环PWM控制方式对系统仿真,使系统更直观、简化,更加贴近实际控制系统,为无刷直流电机无位置传感控制系统的设计与调试提供了新的方法。仿真结果得到的三相行电流波形和反电动势波形与理论分析得到的波形一致,验证了该无位置传感器控制系统的正确性。%Through the analysis of the mathematical model of brushless dc motor, using Matlab/Simulink for brushless dc motor without position sensor control system modeling and simulation. Using Simulink library respectively with motor model,counter electromotive force zero method, speed PI control and current hysteresis PWM control mode of system simulation, and makes the system more intuitive, simplified, more close to the actual control system for brushless dc motor without position sensor control system design and debugging provides a new method. Simulation results obtained three phase line current waveform and back emf waveform and theoretical analysis of the wave get consistent,verify the sensorless control system accuracy.

  7. Research of brushless DC motor control system based on fuzzy neural network PID%基于模糊神经网络PID的无刷直流电机控制系统研究

    Institute of Scientific and Technical Information of China (English)

    戴文俊; 蒋慧

    2015-01-01

    To deal with the problem that the traditional PID control is difficult to achieve good control effect in the brushless DC motor control system, a kind of adaptive PID controller for fuzzy neural network is designed. It is based on the mathematical model of brushless DC motor, is the combination of using nonlinear control function of fuzzy control and learning ability and adaptive capacity of BP neural network in order to make on-line setting of the parameter of PID. The brushless DC motor double closed loop control system based on the fuzzy neural network adaptive PID controller is simulated. Simulation results show that the algorithm decreases the overshoot, has strong robustness in the load and the change of motor parameters.%针对传统PID控制在无刷直流电机控制系统中达不到良好的控制效果的问题,在无刷直流电机的数学模型基础之上,设计一种模糊神经网络自适应PID控制器,该控制器利用模糊控制非线性控制作用和BP神经网络的学习能力及适应能力相结合对PID参数进行在线实时调整。对基于模糊神经网络自适应PID控制器的无刷直流电机的双闭环控制系统进行仿真实验,实验结果表明,可以提高控制系统的响应速度,减小超调量,对负载及电机参数的变化都有较强的鲁棒性。

  8. Thermal analysis of high speed permanent magnet brushless DC motor%高速永磁无刷直流电机的热分析

    Institute of Scientific and Technical Information of China (English)

    杜国华; 房建成; 刘西全; 周银锋

    2012-01-01

    为了解决高速永磁无刷直流电机温升过高带来的磁性能降低及绕组绝缘破坏等问题,对高速电机的温度分布及改进措施进行了一系列研究.采用集中参数法建立了电机热网络数学模型,推导出电机损耗、热导和温度之间的解析方程;建立了基于ANSYS/Work-bench的电机三维有限元模型,对其进行稳态热分析,从而得到电机整体的温度分布,验证了电机热网络模型的正确性;提出了改变转子护套材料及电机轴打孔两种措施.分析结果表明:改进后的电机转子部分温度有了明显降低,其中护套温度降低了约34℃,永磁体约54℃,解决了电机的局部温度过高问题.%In order to solve the problems of reduction in magnetic performance and winding insulation damage caused by high temperature in high speed permanent magnet brushless DC motor, a series of research on temperature distribution and improvement was carried out. The thermal network mathematic model was established by lumped parameters method. And an analytic equation accounting for the relationship among motor loss, thermal conductance and temperature was derived. Besides, the motor 3D finite element model was built based on the ANSYS/Workbench, and steady-state analysis was conducted. The temperature distribution of the whole motor was achieved, which verified the results of thermal network model. And two methods inclu- ding changing the retaining sleeve material and drilling holes on shaft were proposed to solve the temperature problem. According to the analysis results the rotor temperature has dropped obviously, especially the retaining sleeve and permanent magnet with a temperature decrease of about 54℃and 54℃ respectively.

  9. 一个新的适用于无刷直流电机驱动的单电流传感器技术%A Novel Current Sensor Technique for Brushless DC Motor Drives

    Institute of Scientific and Technical Information of China (English)

    谭徽; 江建中; 汪信尧; 王勇

    2000-01-01

    The torque output in a permanent magnet brushless DC motor (BLDCM) is usually controlled by regulating the motor phase currents. In this paper, three kinds of PWM strategies together with some critical review on traditional current measurements in a BLDCM drive system are discussed. A novel method for assessing the PWM information and measuring the motor phase currents by a dc link current sensor is proposed. An attractive feature of the proposed method is the simplicity with the current sample processing because there is no need to incorporate the conduction information of the power switches or diodes. Only the single sided PWM or the double sided complementary PWM is needed with the proposed technique.

  10. 电动汽车用无刷直流电机控制器设计%Controller Design for DC Brushless Motor of Electric Vehicle

    Institute of Scientific and Technical Information of China (English)

    舒雄; 杜荣华; 柴健; 舒刚华; 李亚中

    2015-01-01

    针对四轮独立驱动电动汽车所用电机须调速性好、可靠性高的特点,从工程应用出发,设计一种以dsPIC及MC33035为核心的无刷直流电机控制器。阐述了控制方案及工作原理,给出了硬件电路组成和调速方法。把该控制器运用到自行研制的四轮独立驱动电动汽车上进行测试,其结果表明,该控制器不仅具有响应速度快、调速性能好和稳定性高的特点,且开发成本低,具有广泛的应用价值。%Based on dsPIC and MC33035, a kind of controller is designed for brushless dc motor with good speed regulating and high reliability, which is used in electric car with four-wheel independent drive. The control plan and operating principle are outlined, and the corresponding hardware circuit structure and speed regulation method are introduced. The controller was applied to test self-de-veloped electric car with four-wheel independent drive. The results indicate that the controller have characteristics of fast response, good speed control performance and high stability with low cost and extensive application.

  11. 无刷直流电动机的正弦波电流驱动方法%Sine-wave Current Drive Method for Brushless DC Motors

    Institute of Scientific and Technical Information of China (English)

    朱信舜; 林明耀; 刘文勇

    2011-01-01

    分析了无刷直流电动机方波驱动方式和传统正弦波驱动方式的优缺点,利用三相Hall信号,得到正弦波电流的周期和幅值,通过软件算法生成六路SVPWM信号来驱动无刷直流电动机.采用数字信号控制器(DSC)dsPIC30F4011作为主控芯片,设计了无刷直流电动机的控制系统,详细分析了SVPWM波的生成方法,并给出了软件流程.实验结果验证了提出方法的正确性和可行性.%The performances of square-wave drive and sine-wave drive of brushless DC motor( BLDCM) were analyzed in this paper, a method to drive the BLDCM which makes use of three-phase Hall position signals to get the cycle and magnitude of the sine-wave and a proper software program to generate six-way SVPWM waves was presented. Adopting the DSC dsPIC30F4011, the control system of BLDCM was designed. The method to get SVPWM wave was analyzed in detail in the paper, and the software flow chart was also given. Experimental results verified the validity and feasibility of the proposed method.

  12. 双闭环无刷直流电机驱动电路的设计与实现%Design of drive circuit for double closed-loop brushless DC motors

    Institute of Scientific and Technical Information of China (English)

    宋超; 王刚; 栾宁

    2013-01-01

    The structure and working principle of brushless DC motor are introduced in this paper based on summarization of development and application of brushless DC motor control system. The mathematical model is given. The PID control algo-rithm which is easy to use and robust in brushless DC motor control technology is analyzed emphatically. The hardware and soft-ware design of brushless DC motor control system is described in detail. The circuit was designed on the basis of the special drive chip DSPIC30F4011 used in motor drive circuit manufactured by Microchip. The principal circuit architecture includes power supply circuit, three-phase inverter bridge circuit, rotate speed closed-loop, current closed-loop, line voltage closed-loop, protetion circuit, etc. The software design of the system includes the initial program, and control programs.%在对无刷直流电动机控制系统的发展及应用综述的基础上,介绍了无刷直流电动机的结构和工作原理,给出了其数学模型,并重点分析了无刷直流电机控制技术中简单易用且鲁棒性较好的PID控制算法.对无刷直流电动机控制系统的硬件和软件设计做了详细论述.该电路是基于微芯公司的电机驱动电路专用驱动芯片DSPic30f4011而设计开发的,其中主体电路架构包括电源电路,三相逆变桥电路、转速闭环、电流闭环、线电压闭环和保护电路等.系统的软件设计中,主要包括微控制器的初始化程序、开环起动、换向控制、电流、速度采样时刻控制等.

  13. 基于DSP的小功率无刷直流电动机驱动器设计%Design of Low-power Brushless DC Motor Driver Based on DSP

    Institute of Scientific and Technical Information of China (English)

    侯玉宝; 欧阳宁; 王景芳

    2012-01-01

    There was an increasing demand for low power brushless DC motor in the appliance industry nowadays , in order to meet the requirements of higher performance about the motor control system, a low power brushless DC motor drive was designed out in this paper using TFs dedicated motor control chip TMS320F2812 digital signal processor. The hardware and software structure and control strategy of the drive were introduced in detail, and the experimental results show that the system has the characteristics of shorter response time, better steady performance and anti-interference ability.%现在家电行业对小功率无刷直流电动机的需求日见增多,为了满足用户对电机控制系统产品性能的更高要求.采用TI公司的数字信号处理器TMS320F2812专用电机控制芯片,设计了一种小功率无刷直流电动机的驱动器.详细介绍了该驱动器的硬件电路组成和软件结构及控制策略,通过实验结果表明该系统响应时间短,稳态性能好,抗干扰能力强等特点.

  14. The Sensorless Control of Brushless DC Fan Motors Based on Current Feedback%基于电流反馈的直流无刷风扇电机无传感器控制

    Institute of Scientific and Technical Information of China (English)

    苏译; 徐晓昂

    2012-01-01

    针对无传感器直流无刷风扇电机开环控制的不稳定性和转速闭环控制的相位偏差,首先从直流无刷风扇电机的数学模型及反电势过零点检测方法出发,阐述了由外部PWM驱动的开环控制和转速闭环控制方法的不足,提出了一种新型的基于电流反馈的无传感器直流无刷风扇电机控制系统.最后借助MATLAB/Simulink软件进行了建模与仿真,验证了新型控制系统的可行性.仿真结果表明,提出的控制系统具有良好的稳定性并有效消除了相位偏差.%For instability of open-loop control and phase deviation of speed closed-loop control in sensorless brushless DC fan motors, this paper begins with the mathematical model and the detection method of zero crossing point of brushless DC fan motors, the defects existing in the open-loop control driven by external PWM signals and closed-loop speed control method are expounded, a novel control system of sensorless brushless DC fan motors based on the current feedback is proposed. Finally, the software of MATLAB is used for the modeling and simulation for the whole system, the feasibility of the proposed control system is verified. The simulation results show that the proposed control system has a good stability and eliminates the phase offset effectively.

  15. Simulation of Current Hysteresis Loop Tracking Control for Brushless DC Motor Based on Matlab%基于MATLAB的无刷直流电机的电流滞环控制仿真

    Institute of Scientific and Technical Information of China (English)

    袁川; 乐贵高

    2014-01-01

    针对无刷直流电机的转矩脉动,采用电流滞环控制来抑制脉动;在Matlab/Simulink环境下,基于直流无刷电机的数学模型、转速和电流双闭环控制策略来建立无刷直流电机电流滞环控制系统的各个独立模块如BLDC本体模块、速度控制模块、电流滞环模块、逆变电路模块、脉冲信号模块等,再进行各功能模块的连接,搭建无刷直流电机的控制系统仿真模型,并在给定参数下进行仿真分析。%The current hysteresis loop tracking control is used to prevent the brushless DC motor from torque rippling. In the Matlab/Simulink environment, the independent modules of the brushless DC motor system the with current hysteresis loop tracking control are built based on its mathematical model and the speed and current double closed loop control strategy, such as BLDC ontology, speed control, current hysteresis, inverter circuit and pulse signal modules, which are connected to each function module to build a brushless dc motor control system simulation model and set up the paramters to do the simulation analysis.

  16. 基于改进粒子群算法的无刷直流电机控制研究%Brushless DC Motor Control Research Based on Improved Particle Swarm Optimization Algorithm

    Institute of Scientific and Technical Information of China (English)

    付光杰; 杨帛润; 高俊莹

    2013-01-01

    To consider the complex and coupled nonlinear characteristics of a brushless DC motor,and to overcome the low speed accuracy and slow response shortcoming of the traditional control algorithm,a new strategy for the coefficient of PID controller tuning of brushless DC motor control system simulation modeling based on improved particle swarm optimization (PSO) is proposed in this paper.Building a simulation model of BLDC control system in Matlab/Simulink,and to achieve the dual closed-loop control:The velocity loop adopts the PID control based on particle swarm optimization,the current loop uses hysteresis current control.Simulation results verify the control method of brushless DC motor speed control system has more rapidity,stability and robustness.%文章针对无刷直流电机(BLDC)复杂的、耦合的非线性的特点,克服传统的控制算法控制速度精度不高、响应速度慢等缺点,提出了一种基于改进的粒子群算法(PSO)对PID控制器系数自整定的无刷直流电机控制新策略.在Matlab/Simulink中搭建BLDC控制系统的仿真模型,并实现双闭环的控制:速度环采用改进粒子群算法优化PID控制,电流环采用滞环电流控制.仿真结果验证了该控制方法对无刷直流电机调速系统具有良好的快速性、稳定性和鲁棒性.

  17. 基于 LS052A Cb 的无刷直流电机的控制系统设计%Control System of Brushless DC Motor Based on LS052A Cb

    Institute of Scientific and Technical Information of China (English)

    韦宏利; 李金荣

    2016-01-01

    基于设计一款高效节能的无刷直流电机的控制系统方案的目的,LS052A Cb 是一款国产通用型单片机,能够实现多核多任务并行处理。在研究了 SVPWM 基本原理的基础上,采用空间矢量脉宽调制技术的方法,通过运用反电动势检测实现无位置传感器方式的位置检测,并检测速度和电流采集运用双闭环 PID 的控制策略实现了对无刷直流电机的速度控制的试验,得出一种新型无刷直流电机控制系统的方案可行,具有应用价值。%This paper seeks to design a control system for an efficient and energy saving brushless DC motor.LS052A Cb is a general purpose microcontroller in made in China that supports parallel multi core multi tasking processing.After studying the basic principles of SVPWM,with space vector pulse width modulation technology,and via counter EMF position detection is achieved under the sensor less mode.And speed detection and current collection using dual loop PID control strategy,speed control ex-periment of the brushless DC motor is carried out.The conclusion of feasibility of a new type of brushless DC motor control system of the program is obtained and proven of great value in application.

  18. 基于模糊预测控制的无刷直流电机控制研究%Study on Brushless DC Motor Control Based on Fuzzy Predictive Control

    Institute of Scientific and Technical Information of China (English)

    王玉娟; 张艳

    2015-01-01

    针对传统控制方法在对永磁无刷直流电机(Brushless DC Motor,BLDCM)进行控制时鲁棒性差、精度低、实时性不理想等缺点,提出了一种模糊与预测相结合的控制算法。将该算法应用于永磁无刷直流电机双闭环调速系统的转速闭环中,并利用 MATLAB 软件搭建无刷直流电机的控制系统进行仿真。实验结果表明该算法利用模糊控制与预测控制各自的优点,提高了无刷直流电机的性能,是可行和有效的。%When the Brushless DC Motor(BLDCM)is controlled by traditional methods,it is weak in robustness,accuracy and real-time .A fuzzy predictive control method is proposed in this paper.The control algorithm is applied in the double loop of speed servo system of BLDCM.The control system of Brushless DC motor is built and simulated by the MATLAB software.Ex-periments results show that the control algorithm combines the advantages of the fuzzy control and the predictive control and im-proves the performance of the BLDCM.This control method is proved to be feasible and effective.

  19. Research and Implementation on Field Orientation Control Strategy of Brushless DC Motor%无刷直流电机磁场定向控制策略研究与实现

    Institute of Scientific and Technical Information of China (English)

    肖金凤; 张垒; 盛义发

    2013-01-01

    针对目前存在的无刷直流电机转矩脉动这一突出问题,介绍了无刷直流电机转矩脉动及抑制机理,提出采用磁场定向控制策略,以降低无刷直流电机的转矩脉动.给出了控制策略及实现方法,并建立系统仿真模型,将基于磁场定向控制与传统方波线电压控制的控制系统进行对比仿真研究,仿真表明基于磁场定向控制的无刷直流电机控制系统性能更好,转矩脉动更小.以STM32F103B为核心设计了磁场定向控制无刷直流电机控制系统,实测的电机相电流为近似正弦波,转速波动小,电机运行平稳.%According to the torque ripple of brushless DC motor is the most outstanding problem, this paper introduces the torque ripple and reduction mechanism. The application of field orientation control ( FOC) strategy to reduce the torque ripple of brushless DC motor is put forward, the control strategy and implementation method are given, and the system simulation models are established. The system based on FOC is compared with system based on traditional square wave line voltage modulation method, the simulation results show the control performance of brushless DC motor based on FOC introduced is better, torque ripple is smaller. STM32F103B is used as the control core to design the Brushless DC motor control system test platform based on FOC. The phase current curve is approximate sine wave, speed ripple is small, operation is stable.

  20. 永磁直线直流电机控制系统设计与实验研究%Design and Experiment for Linear Permanent Magnet Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    尹曾锋

    2012-01-01

    本文详细介绍了基于DSP TMS320LF2407的永磁直线直流无刷电动机硬件设计和PWM控制方法,给出了电机的控制程序流程,试验结果表明该方法简单可行。%This paper introduces a DSP-based PWM timing method for linear permanent magnet brushless DC motor in detail. The test results show that the method of control program is simple and feasible in practice.

  1. A discrete time model of a power conditioner fed permanent magnet brushless dc motor system for aerospace and electric vehicle applications for design purpose using finite elements for machine parameter determination

    Science.gov (United States)

    Nehl, T. W.

    1980-12-01

    A discrete state space model of a power conditioner fed permanent magnet brushless dc motor for aerospace and electric vehicle applications is developed. The parameters which describe that machine portion of this model are derived from a two dimensional nonlinear magnetic field analysis using the finite element method. The model predicts the instantaneous mechanical and electrical behavior of a prototype electromechanical actuator for possible use on board the shuttle orbiter. The model is also used to simulate the instantaneous performance of an advanced electric vehicle propulsion unit. The results of the computer simulations are compared with experimental test data and excellent agreement between the two is found in all cases.

  2. 一种内转子三槽无刷直流水泵电机的设计%Design on DC Brushless Pumping Motor with the Inner Rotor and Three-slot Stator Construction

    Institute of Scientific and Technical Information of China (English)

    马余洋

    2015-01-01

    A kind of high-efficiency DC brushless pumping motor together with its simple manufacturing pro-cess was introduced. The contents were included with the performance of 2-pole PM rotor, detailed stator construction and the manufacturing for the winding as well as relative control method.%介绍了一种效率高且制造工艺简单的无刷直流水泵电机。内容包括两极永磁体转子的性能、定子结构和绕组的制造及其控制方法。

  3. 一种减小无刷直流电机转矩脉动的广角波控制方法%A wide-angle wave control method of reducing torque ripple for brushless DC motor

    Institute of Scientific and Technical Information of China (English)

    吴春华; 陈国呈; 孙承波

    2007-01-01

    In order to deal with torque pulsation problem caused by traditional control method for brushless DC(BLDC)motor and to achieve high precision and good stability,a novel control strategy is proposed.Compared with the traditional control scheme,by using phase voltage as a control objective and making waveform of phase current approximately quasi-sinusoidal,torque ripple of BLDC motor is reduced from the original 14% to 3.4%,while toque is increased by 3.8%.Furthermore,by detecting zero-crossings of back electromotive force(BEMF)with non-conducting phases,sensorless control is realized.The new control strategy is simple.It carl minimize torque ripple,increase torque,and realize sensorless control for BLDC motor.Simulation and experiments show good performance of BLDC motor by using the new control method.

  4. 无刷直流电机单神经元自适应智能调速系统%Single Neuron Self-adaptive Intelligent Speed Control System of Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    魏巍

    2014-01-01

    本文针对无刷直流电机设计了一种可在线学习的单神经元自适应PID智能控制器,通过有监督的Hebb学习规则来调整权值,每一次采样都直接根据反馈误差对神经元权值进行调整,实现PID三个参数的自适应,采用分段线性化方法建立无刷直流电机反电动势梯形波,采用滞环电流控制器实现电流调节,并在Matlab/Simulink仿真平台上搭建仿真模型,结果表明智能PID控制效果和鲁棒性都优于常规PID,大大提高了系统的跟随性,能满足无刷电机系统对实时性的要求。%According to brushless DC motor, this paper designed a kind of single neuron self-adaptive PID intelligent controller which can be learned online, the weights can be adjusted by supervised Hebb learning rule, the neuron weights are adjusted according feedback error in every sampling, so as to realize the self-adaptation of three PID parameters. Brushless DC motor back EMF wave was built by using piecewise linearization method, the current regulation was realized by using hysteresis current controller and simulation model was structured based on Matlab / Simulink simulation platform. The results show that the intelligent PID control effect and robustness are better than the conventional PID, so it greatly improved the following characteristic of the system, and it can satisfy the real-time requirements of the brushless motor system.

  5. Permanent magnet brushless motor control based on ADRC

    Directory of Open Access Journals (Sweden)

    Li Xiaokun

    2016-01-01

    Full Text Available Permanent magnet brushless motor is a nonlinear system with multiple variables, the mathematical model of Permanent magnet brushless motor is difficult to establish, and since that the classic PID control is hard to precisely control the motor. Active disturbance rejection control (ADRC technique is a new nonlinear controller which does not depend on the system model. It is starting from the classic PID control, and establishing the loop control system by error negative feedback, the ESO(extended state observer observing system which comes from the observer theory of modern control theory to observe internal and external perturbations. ADRC inherits the advantages of PID with little overshoot, high convergence speed, high accuracy, strong anti-interference ability and other characteristics, and it has a strong disturbance adaptability and robustness as for the uncertainty perturbation and their internal disturbance of control objects. Therefore, This paper attempts to use Active disturbance rejection control(ADRC, in order to improve the control of permanent magnet brushless motor. In this design of control system, the simulation of the system is realized based on MATLAB, and then the discrete control algorithm is transplanted to the embedded system to control the permanent magnet brushless DC motor (PMBLDCM. The control system is implemented on the DSP-F28335 digital signal processor, and the DSP also provides the functions like voltage and current AD sampling, PWM driver generation, speed and rotor position calculation, etc. The simulation and experiment results indicate that, the system has good dynamic performance and anti-disturbance performance.

  6. 基于DSP2812的无刷直流电动机控制及其MATLAB仿真%Brushless DC Motor Control based on DSP2812 and MATLAB Simulation

    Institute of Scientific and Technical Information of China (English)

    周立媛; 韩文波; 薛书飞

    2013-01-01

    采用DSP2812为控制器对无刷直流电动机的控制系统进行了硬件电路和软件程序设计.文中采用了PI转速和PI电流调节器的双闭环控制方法,实现了转速的精确控制,并建立了无刷直流电动机控制系统的数学模型.最后运用MAT-LAB/SIMULINK进行了仿真,仿真结果验证了系统的可行性.%In this paper,it adopt DSP2812 as controller for brushless direct current (DC) motor and carry through the hardware and software programming for control system.It use the dual closed-loop control of PI revolving speed and PI current regulator to achieve a precise control of revolving speed,and establish the mathematical model of the brushless DC motor control system.Finally,the results of the MATLAB / SIMULINK simulation verify the feasibility of the system.

  7. 无刷直流电动机系统的一种摩擦补偿方法研究%Compensation of friction in brushless DC motor system

    Institute of Scientific and Technical Information of China (English)

    李书训; 姚郁

    2001-01-01

    Presents a simple method of compensating friction against the character of the nonlinear model of a brushless DC motor system which transfers the original system model to a simple linear model using the method of input-output linearization, and estimates the coulomb friction in the system in real-time using a nonlinear friction estimator, and then compensate the friction in the system using a friction feedforward, and concludes from simulation results that this method can effectively eliminate the influence of friction in brushless DC motor systems.%针对无刷直流电动机系统的非线性数学模型特点,提出了一种简单的摩擦补偿方法.该方法首先利用输入输出线性化方法将原系统模型转化为一种简单的线性模型,然后给出一种非线性摩擦估计器实时估计系统中的库仑摩擦值,最后利用摩擦前馈补偿方法对其进行补偿.仿真结果表明该方法可以有效地抑制无刷直流电动机系统中的摩擦影响.

  8. 电动车用无刷直流电机控制系统的分析与仿真%Analysis and Simulation of Brushless DC Motor for Electric Vehicle Control System

    Institute of Scientific and Technical Information of China (English)

    汪楚锟; 谢利理

    2013-01-01

    Due to high efficiency, long life, low noise and good speed-torque characteristics of brushless DC motor, BLDCM is more extensive in auto application. A design, and simulation control strategy, system simulation analysis of the system for Brushless DC motor used in electric vehicle control system characteristics mainly are made for pre-estimation of the overall adjustment program to analyze the feasibility of control strategy. Simulation results show that the realization of functions is possible, and reaches the desired effect.%由于无刷直流电机其具有高效率、长寿命、低噪声以及较好的转速-转矩特性,在汽车中的应用比较广泛.针对电动汽车用无刷直流电机控制系统特性进行了方案设计,然后仿真验证控制策略,系统仿真分析主要是对系统的整体调节方案的预估计,分析控制策略的可行性.Matlab仿真结果显示所实现功能可行,基本达到了预期效果.

  9. Design of Sensorless Brushless DC Motor Controller Based on DSP TMS320F2812%基于TMS320F2812的无传感器无刷直流电机控制器设计

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    This article provides a brushless DC motor controller based on TMS320F2812 chip sensor design speed, current dual closed-loop digital control platform sensorless brushless DC motor running smoothly. Introduces the system's hardware and software structure. It has becu proved reliable operation of the controller. The system has broad application prospects.%  提供了一种基于TMS320F2812芯片的无传感器无刷直流电机控制器,设计了转速、电流双闭环数字化控制平台,实现了无传感器的无刷直流电机的平稳运行。同时详细地介绍了该系统的硬件、软件构成。试验证明,该控制器运行稳定可靠。该系统具有广泛的应用前景。

  10. Based on the Incremental PID Algorithm for Brushless DC Motor PWM Speed Control Research%基于增量式PID算法的无刷直流电机PWM调速研究

    Institute of Scientific and Technical Information of China (English)

    吴强; 韩震宇; 李程

    2013-01-01

    In order to improve the control precision of brushless DC motor,using TI TMS320LF2407A as the control chip, a digital incremental PID algorithm and PWM control technology. This paper describes the principle of PID algorithm, PWM speed control principle and system hardware block diagram, software flow chart and draw the conclusion that PID algorithm has great superiority in the brushless DC motor speed control .%  为了提高无刷直流电机转速控制精度,系统选用了 TI 公司 TMS320LF2407A 为控制芯片,采用数字式增量 PID 算法和PWM控制技术。叙述了PID算法原理、PWM调速控制原理以及系统硬件原理框图、软件流程框图,并得出实验结论,证明PID算法在无刷直流电机调速过程中的优越性。

  11. Design of Three-phase Brushless DC Motor Driver Circuit Based on DSP%三相无刷直流电机调速系统的驱动设计

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    By using IR2136 (International Rectifier) to design a three-phase brushless DC motor driver circuit based on TMS320F28335 floating-point processor and implementing positive-negative rotating and speed con⁃trolling, this paper designs a driving circuit of the three-phase brushless DC motor, including power module, sig⁃nal isolation module, IR2136 logic circuit, driving circuit of the three-phase full bridge and over current protec⁃tion circuit, etc.%  以TMS320F28335浮点型处理器为控制器,采用International Rectifier公司的IR2136作为驱动芯片,设计了三相无刷直流电机的驱动电路,实现三相无刷直流电机调速及正反转控制,其中包括电源模块、信号隔离模块、IR2136逻辑电路、三相全桥驱动电路及过流保护电路等。

  12. 永磁直流无刷力矩电机温度场分析%Analysis of the 3 D temperature field of permanent magnet brushless DC torque motor

    Institute of Scientific and Technical Information of China (English)

    史忠震

    2015-01-01

    In this paper the temperature field of permanent magnet brushless DC torque motor is calculated using finite ele-ment analysis software.According to the theory of heat transfer,the torque motor temperature field calculation model under the condition of continuous rotation blockage is built.The boundary conditions are obtained according to the internal heat ex-change of the torque motor,and then finite element simulating calculation is carried out of the model to examine the model simplification and heating of each part of the motor.The simulation results and the laws of the motor temperature are in sat-isfactory agreement.The analysis method has certain reference significance for the design optimization of brushless DC torque motor and analysis of its temperature field.%运用Ansys有限元分析软件对永磁直流无刷力矩电机进行了温度场分布研究,根据传热学理论建立了力矩电机连续堵转运行条件下的温度场计算模型,通过力矩电机内热交换给出了边界条件,对该模型进行有限元仿真计算,研究力矩电机模型简化以及电机各部件的发热情况,得出的仿真结果与电机实测数据基本相符,说明该分析方法对于直流无刷力矩电机的设计优化以及电机的温度场分析具有一定的参考意义。

  13. Design of Speed Measurement and Display System on Brushless DC Motor%无刷直流电机速度测量与显示系统设计

    Institute of Scientific and Technical Information of China (English)

    赵诣; 李杰; 刘喆; 刘俊; 陈伟

    2012-01-01

    针对在传统测量无刷电机转速过程中,磁传感器易受电机绕组和转子的磁场干扰和编码器与很多型号电机安装不匹配导致测速没有通用性等问题,提出了一种集精确测量电机转速、上位机实时显示转速及数据存储的综合设计方案.该方案采用角速率传感器测量转速,将数字信号处理器作为微控制器控制模数转换并将传感器的输出值存储并处理,提高了整个系统的处理速度.经过试验验证,该系统能实时地显示电机的转速,有很好的稳定性和可操作性,对无刷直流电机中的速度环控制与调试有很重要的实际意义.%Against the fact that when measuring the brushless DC motor rotary speed in the traditional process, the magnetic sensor was susceptible to interference by the magnetic field of motor windings and rotor, at the same time the encoder could not be installed with many models, so that it could not be universally used. This paper presented a set of integrated design for measuring motor rotary speed. It integrated accurate measurement of motor rotary speed, the PC real-time display and data storage. The design used angular rate sensor to measure speed. Conducting as micro-controller unit, the digital signal processor controlled analog to digital converter, the storing and processing of the sensor output value, as a result of that it could improve the processing speed of the whole system. After experimental verification, the system can display real-time speed of brushless DC motor with good stability and operability. It will play an important and practical role in the control and debug of brushless DC motor.

  14. 四轮驱动电动汽车永磁无刷轮毂电机转矩分配%Torque distribution algorithm for a permanent brushless DC hub motor for four-wheel drive electric vehicles

    Institute of Scientific and Technical Information of China (English)

    卢东斌; 欧阳明高; 谷靖; 李建秋

    2012-01-01

    四轮驱动轮毂电机电动汽车采用4个永磁无刷轮毂电机驱动,根据轮毂电机的反电势接近正弦波的特点,采用磁场定向控制方法可以实现最大转矩电流控制。该文在永磁同步电机磁场定向控制效率模型的基础上,提出了相同转速转矩下的多永磁同步电机系统效率模型,根据此模型证明了多永磁同步电机系统相同转速下转矩平均分配可使电机系统效率达到最优。将此结论应用到四轮驱动电动汽车轮毂电机转矩分配研究中,通过仿真和实车测试进行验证。仿真和试验结果证明,平均分配永磁无刷轮毂电机转矩可使整车效率最优。%Four in-wheel motors drive electric vehicles are driven by four brushless DC hub motors. Since the back electromotive force (emf) waveform of a permanent brushless DC hub motor is usually nearly sinusoidal, the maximum torque per ampere control can be found using field oriented control (FOC). An efficiency model for a permanent magnet synchronous motor (PMSM) was used in an efficiency model of multi-PMSMs with the same speed and torque. The optimal efficiency can be achieved based on the average torque distribution assuming all the same speed PMSMs. This conclusion can be applied to the torque distribution of brushless DC hub motors for four-wheel drive electric vehicles. Simulation and experimental results show that the average torque allocation to the four hub motors of the electric vehicle gives the best efficiency.

  15. Simulation of Double- Motor Synchronous Control System for Brushless DC Motor%双无刷直流电机同步传动系统仿真研究

    Institute of Scientific and Technical Information of China (English)

    曾丽; 段文潇

    2011-01-01

    针对双电机同步驱动控制在负载发生扰动时同步控制性能较差的问题,建立了双无刷直流电机偏差耦合同步控制系统的数学模型,提出了智能PI控制器作为速度补偿器的同步控制方案.智能PI控制器可有效缓解普通PI控制系统快速性和平稳性的矛盾,使系统具有更高的同步控制精度.仿真结果表明,采用智能PI控制的系统优于采用普通PI控制的系统.%For the problem of synchronous performance of double - motor being at a low - level with disturbance of the drive motors' load, the math model of double - motor' s sync - drive control system for brushless DC motor is built, and based on the relative coupling strategy and the intelligent PI as speed compensator to control the double -motor's relative is presented. Compared with common PI control system, the intelligent PI control system suc- cessfully solves the contradiction between quickness and smoothness. Simulation results show that the system of rel- ative coupling which adopt intelligent PI is better than common PI' s.

  16. 基于Ansys的永磁无刷直流电机定子振动特性研究%Study on Vibration Characteristics of Permanent Magnet Brushless DC Motor Stator Based on ANSYS

    Institute of Scientific and Technical Information of China (English)

    曲剑波

    2011-01-01

    永磁无刷直流电机定子振动特性的研究对降低电机噪声和抑制电机的振动有重要意义.以某电动车用永磁直流无刷电机为研究对象,利用Ansys软件建立定子结构的参数化模型,并对影响振动特性的因素进行灵敏度分析.以此为依据对定子进行优化设计,为该类电机的振动特性优化提供依据.%It is important to study the vibration characteristics of the stator for permanent magnet brushless DC motor,aiming to reduce motor noise and vibration suppression.The parameters of the model stator structure were established with ANSYS software on basis

  17. The Level of Technology of Permanent Brushless DC Motor and It's Useness Prospect%永磁无刷电动机技术发展水平及应用前景

    Institute of Scientific and Technical Information of China (English)

    李烨; 严欣平

    2001-01-01

    永磁无刷电动机作为一种新型电动机,源于其自身的技术优势和卓越性能,必将伴随着新世纪的脚步,在相关支撑技术快速发展的推动下,获得更为广阔的应用和发展空间。%As a new style motor, due to it's technology superiority and brilliant function, at the same time, with relative sustain technologies quickly developing. Permanent magnet brushless DC motor is bound to gain wider space of usenenss and development in coming new centry.

  18. 基于 Matlab 的无刷直流电机控制系统仿真研究%Simulation Study on Control System of Brushless DC Motor based on Matlab

    Institute of Scientific and Technical Information of China (English)

    谢少华; 瞿遂春

    2015-01-01

    This paper analyzes the operation principle of Brushless DC motor, this paper proposes a new method based on Matlab modeling, namely through the synchronous motor model of the original Matlab, change the inverse electromotive forceparameters, then the external set position detection and commutation circuit, which can be convenient for brushless DC motor control system the simulation model. This paper introduce the sub-modules of the controlling system in detail., at the same time, the simulation results are compared with the experimental results. Results show that, the simulation results are consistent with the experimental results, a new method of modeling in Matlab can correctly reflect the performance of Brushless DC motor control system and provides an important basis for the design and debugging of the actucal control system.%本文在分析无刷直流电机运行原理的基础上,提出了一种基于 Matlab 建模的新方法,即通过Matlab 中原有的同步电机模型,改变其反相电动势参数,然后在外部搭建位置检测与换相电路,可以方便快捷的构成无刷直流电机控制系统仿真模型。并对控制系统仿真模型各个部分的建模进行介绍,同时,将仿真结果与实验结果进行对比。对比结果表明,仿真结果与实验结果基本一致,在 Matlab 中建模的新方法能够正确反映无刷直流电机控制系统性能,对实际控制系统设计与调试提供重要依据。

  19. New Fault-tolerant Control Strategy for Five-phase Permanent-magnet Brushless DC Motors%新型五相 BLDC 电机的容错控制策略研究

    Institute of Scientific and Technical Information of China (English)

    许晓春; 刘国海; 赵文祥

    2014-01-01

    本文针对一种具有144°平顶梯形波的五相容错永磁无刷直流(BLDC)电机提出了基于转矩等效的容错控制策略。在保证输出转矩相等的基础上,推导了故障条件下的BLDC电机容错式BLAC控制策略。仿真和试验结果表明,该容错控制策略可以保证五相DLDC电机在故障条件下保持正常运行时的转矩性能。%In this paper , a new fault-tolerant control strategy was proposed for remedial operation of a five-phase permanent-magnet brushless DC (BLDC) motor, which had 144°trapsoidal back-EMF.In order to maintain the average torque under normal condition , a remedial brushless AC ( BLAC) mode was proposed for this faulty BLDC motor.Both simulation and experimental results were given , verifying that the new con-trol strategy can enhance the torque performance of faulty operation.

  20. Hardware Design of Brushless DC Motor Based on IPM and DSP Control%基于IPM与DSP控制无刷直流电机的硬件设计

    Institute of Scientific and Technical Information of China (English)

    邱兴阳

    2013-01-01

    智能功率模块IPM集驱动电路、欠压、短路、过热等保护电路于一体,结构简单、损耗小、重量轻、体积小、使用可靠等优点。随着大功率IPM集成器件、高性能单片机及数字信号处理器DSP技术的飞速发展,使得大功率驱动控制和高速复杂的控制算法得到了满足,从而也使得大功率无刷直流电机在电机界的电动推进系统中得到了越来越广泛的重视。无刷直流电机具有高速性能好,体积小、效率高、寿命长、运行可靠、维护简便等优点,能广泛应用于医疗、化工、煤炭、石油、纺织、仪器仪表、家用电器、电动汽车和自行车、铁路运输、航空航天、工业自动化等领域。使用IPM和DSP控制无刷直流电机,不仅能实现对电机的实时性控制,还能使控制电路得到简化。因此研究IPM与DSP控制无刷直流电机的硬件设计具有非常重要的意义。%IPM integrates the protection circuits of driving circuit, undervoltage, short circuit, overheating and so on, which has the advantages of simple structure, small loss, light weight, small size, reliable use, etc. With the rapid development of high-power IPM integrated devices, high-performance single-chip and digital signal processor technology, high-power driving control and high-speed complex control algorithms have been met, making high-power brushless DC motor get widely attention in the electric motor propulsion system. The brushless DC motor has advantages of good high-speed performance, small size, high efficiency, long life, reliable opera-tion and easy maintenance, etc. , which can be widely used in the fields of medical, chemical, coal, petroleum, textile, instruments, household appliances, electric vehicles and bicycles, railway transportation, aerospace, industrial automation and so on. The brushless DC motor controlled by IPM and DSP not only achieves the real-time control of motors, but also simplifies

  1. An Accurate Mathematical Model of Radial Suspension Force in Bearingless Brushless DC Motors%无轴承无刷直流电机径向悬浮力精确数学模型

    Institute of Scientific and Technical Information of China (English)

    陈雷刚; 朱熀秋

    2012-01-01

    建立精确的径向悬浮力数学模型,对降低无轴承无刷直流电机系统复杂性、提高控制精度很有帮助.从无轴承无刷直流电机结构出发,详细阐述了其工作原理并建立了等效磁路.将永磁体磁动势等效为悬浮力绕组上的虚拟电流,进而推导了单自由度径向悬浮力的数学模型.最后对有限元分析得到的仿真结果和理论值进行了比较.为了得到更准确的结果,为位移刚度系数引入了修正系数,并再次对其进行了有限元验证.结果表明,所提出的无轴承无刷直流电机的径向悬浮力数学模型具有可行性和较高的精确性.%An accurate mathematical model of radial suspension force in a bearingless brushless DC motor is of great significance to reduce the complexity of system and to improve the control accuracy. This paper began with the structure of the bearingless brushless DC motor, then elaborated on the working principle and established the equivalent circuit. The magnetomotive force of permanent magnets was equivalent to virtual currents in suspension windings, and then a mathematical model with single degree of freedoms for radial suspension force was derived. Finally, results by finite element analysis and theoretical values were compared. In order to get more convincing results, the correction factor was introduced for the displacement stiffness coefficient, and then the finite element analysis was carried out again. The ultimate results show that the proposed mathematical model of radial suspension force of the bearingless brushless DC motor has feasibility and high accuracy.

  2. High-Accuracy Constant-Speed Research of Great Angular Momentum Brushless DC Gyro Motor%大角动量无刷直流陀螺电动机的高精度稳速研究

    Institute of Scientific and Technical Information of China (English)

    段晓妮; 孙纯祥

    2012-01-01

    A high-accuracy constant-speed system of great angular momentum permanent magnet brushless DC gyro motor was introduced. Based on the analysis of the operational principle of the brushless DC gyro motor, a speed closed -loop control strategy was designed, and the model of the BLDCM and controller was proposed in Simulink. DSP and CPLD were used as the main components of the controller. Piecewise PI was used as the control algorithm on steady speed. The motor was controlled by the combination of hardware and software to achieve soft start, protection of over current and steady speed controlling. Through prototype testing, the result shows that such control strategy has short starting time, high starting reliability and high-accuracy steady speed.%介绍了一种大角动量永磁无刷直流陀螺电动机的高精度稳速控制系统.在研究无刷直流陀螺电动机运行原理的基础上,应用了一种简单实用的速度闭环控制策略,并在Simulink中建立电机本体及控制模型.陀螺电动机的主控制器由硬件电路和软件程序组成.DSP和CPLD作为控制器主体,以分段PI算法为稳速控制方法,两者配合实现了软起动、过流保护和稳速控制等功能.样机试验结果表明,该控制系统起动迅速、起动可靠性高及稳速精度高.

  3. 基于有限元的永磁无刷直流电动机铁耗分析与计算%Analysis and Calculation of Iron Losses in PM Brushless DC Motors Using Finite Element Method

    Institute of Scientific and Technical Information of China (English)

    张明慧; 刘卫国; 陆地; 孙伟

    2011-01-01

    建立了基于Bertotti铁耗分离理论,全面考虑交变磁化条件和旋转磁化条件下的永磁无刷直流电动机的铁耗计算模型.通过结合时步有限元方法,精确计算出了一台30 kW、4极3相表贴式永磁无刷直流电动机在额定转速为8 000 r/min时的定子铁心损耗.相较于传统的铁耗计算经验公式,本模型提高了永磁无刷直流电动机铁耗计算的精度和准确度,对电机的优化设计具有指导意义,有较好的工程应用价值.%The model of iron losses calculation in PM brushless DC motor was built based on Bertotti's iron-loss model and considering both alternating and rotating behavior of the magnetic field. The stator core losses are calculated by time-step FEM method for a 30 kW,4-pole, 3-phase, surface mounted PM brushless DC motor when its rotating speed is 8 000 r/min. Compared with the conventional experience equation, the model is more accurature and precise. And it is valuable for the motor optimization design and engineering application.

  4. 基于AVR单片机的太阳能光伏无刷直流电机水泵系统的设计%A Photovoltaic Brushless DC Motor Pumps Control System Based on the AVR Microcontroller

    Institute of Scientific and Technical Information of China (English)

    祝加雄; 常峰

    2013-01-01

    Through analyzing present situation the utilization of solar energy and efficiency of pumping systems both are low.This paper designed a brushless DC motor pumps control system based on the AVR microcontroller.This control system is mainly composed of photoelectric tracking module,brushless DC motor controller,circuit protection module.It adopted the energy tracking and controlling,protection the motor by multi-point detection.Then automatic balance between the flow and energy was carried out in different heads.After experimental verification,the system had greatly improved the utilization of solar energy and efficiency of pumping systems.So the system had a certain value in use.%为了解决太阳能利用率低和水泵系统效率低等问题,设计了一种基于AVR单片机的直流无刷电机水泵控制系统,主要由光电跟踪模块、无刷直流电机控制器、电路保护模块等组成.系统采用能量跟踪控制,多点检测保护电机,实现在不同扬程下,流量与能量之间自动平衡.结果表明:该系统改善了太阳能利用率和水泵系统效率,且运行稳定,具有一定的使用价值.

  5. Self-Learning Fuzzy PI Control of Permanent Magnet Brushless DC Motor%永磁无刷直流电动机的自学习模糊PI控制

    Institute of Scientific and Technical Information of China (English)

    雷金莉; 窦满峰

    2013-01-01

    The system parameters of permanent magnet brushless DC motor for aerospace are nonlinear,uncertainty,so a general PI controller is hard to achieve the satisfactory effect. A self-learning fuzzy PI controller was designed. Based on the deviation of the actual speed and the reference speed, control variables were regulated, and its control rules was modified. The PI control parameters were adjusted online. The simulation results show that the self-learning fuzzy PI controller has a strong disturbance restraining capability,fast dynamic response,no over-shoot,no steady-state error and good robustness in the motor load and electrical parameters changes in large scale. The nonlinear, uncertainty control problems of permanent magnet brushless DC motor is solved.%针对航空航天用永磁无刷直流电动机具有非线性、不确定性等特点,常规PI控制器难以取得理想的控制效果,提出了自学习模糊PI控制算法.根据实际转速与参考转速的偏差进行控制量校正,修改控制规则,从而在线调整PI控制参数.仿真验证实验表明:自学习模糊控制器对电机负载及内部参数大范围扰动具有较强的抑制能力,系统动态响应快、无超调、稳态无误差、鲁棒性强.解决了永磁无刷直流电动机非线性、不确定性的控制问题.

  6. An Investigation on Optimization Control of the Electromagnetic Coupler in Permanent Magnet Brushless DC Motor%永磁无刷直流电机的电磁耦合器优化控制研究

    Institute of Scientific and Technical Information of China (English)

    叶伟慧

    2016-01-01

    Electromagnetic coupler of permanent magnet brushless DC motor is an important device to achieve inductive power transmission.By optimizing the control design of electromagnetic coupler the stability and output gain of the electromagnetic coupler may be improved. This article sets forth a method to optimize the control of electromagnetic coupler based on particle swarm optimization.In the first it requires to design the equivalent circuit for electromagnetic coupler of the permanent magnet brushless DC motor in order to build parameter model to constrain the control of the electromagnetic coupler which takes the output voltage gain,power consumption and efficiency as the constrain parameter to build function for the control target and achieve improved control algorithm,so that the optimal design of electromagnetic coupler of permanent magnet brushless DC motor could be realized.Simulation results show that the design method for control of the electromagnetic coupler can effectively improve the output stability of the electromagnetic coupler of the permanent magnet brushless DC motor while the current gain,voltage gain and output efficiency of the motor is higher than that of traditional methods.It should demonstrates a sound value for applications.%永磁无刷直流电机的电磁耦合器是实现感应电能传输的重要器件,通过对电磁耦合器的优化控制设计,提高电磁耦合器的稳定性和输出增益。提出一种基于优化粒子群算法的电磁耦合器优化控制方法,首先进行了永磁无刷直流电机的电磁耦合器的等效电路设计,构建电磁耦合器控制的约束参量模型,以输出电压增益、功率损耗与效率为约束参量构建控制目标函数,实现控制算法的改进,进行了永磁无刷直流电机的电磁耦合器的优化设计。仿真实验结果表明,能有效提高永磁无刷直流电机的电磁耦合的输出稳定性,电机输出的电流增益、电压增

  7. 永磁无刷直流电机4状态工作统一模型%Uniform model of permanent magnet brushless DC motor in four states

    Institute of Scientific and Technical Information of China (English)

    刘晨; 余卓平; 张元才; 姜炜

    2008-01-01

    针对现有文献中普遍存在的永磁无刷直流电机(Permanent Magnet Brushless DC Motor,PMBLDCM)仿真模型工作状态单一的缺点,通过分析PMBLDCM在4状态工作过程中转子位置与开关触发逻辑之间的关系,定义开关因数S和调制因数T,建立PMBLDCM的4状态工作统一数学模型,并利用Matlab/Simulink构建仿真模型.结果表明,该仿真模型运行稳定可靠,为PMBLDCM的建模仿真研究提供有益的参考.

  8. Analysis of End Force for Linear Permanent Magnet Brushless DC Motor%直线永磁无刷直流电动机端部力的分析

    Institute of Scientific and Technical Information of China (English)

    黄文美; 薛雅洁; 宋桂英

    2011-01-01

    For the thrust ripple caused by end effect of the linear permanent magnet brushless DC motor ( LPMBDCM), the inlucencing factor of end force was analyzed, the structure of the rotor was optimized, and the model of simulation was built. The accuracy of optimized structure was tested and verified.%直线永磁无刷直流电动机由于动子开断产生的端部效应引起推力波动问题.文章从理论上分析了其端部力的影响因素,对动子结构进行了优化,建立了仿真模型,并对优化结构进行了验证.

  9. Study of the Fuzzy PID Control Strategy of Brushless DC Motor Based on SIMULINK%基于SIMULINK的无刷直流电机模糊PID控制策略研究

    Institute of Scientific and Technical Information of China (English)

    邓志良; 易兴邦

    2011-01-01

    Based on analyzing the mathematical model of square-wave brushless DC motor,aiming at the typical operating mode of the 2-phase turn-on 3-phase 6-state with wye-connected,the paper proposes a fuzzy PID control strategy.A fuzzy PID control strategy simulation model is established on Matlab/Simulink platform and then fuzzy PID of brushless DC motor model is also simulated by changing parameters.The control results are compared with that of fuzzy PID and conventional PID control.The results of simulation indicate that the system has the advantages of strong robustness,fast response time and high steady-state accuracy.%在分析方波型永磁无刷直流电动机(BLDCM)数学模型的基础上,针对典型的两相导通星型三相六状态工作方式的无刷直流电动机,提出了一种模糊PID控制方法,在Matlab/Simulink平台上建立了无刷直流电机模糊PID控制策略的仿真模型,改变参数后,对其也进行了仿真,并且将模糊PID控制和传统PID控制的控制效果进行了比较。仿真结果表明:建立的该系统具有鲁棒性强、响应速度快、无超调,且稳态精度高等优点。

  10. Ironless-armature brushless motor

    Science.gov (United States)

    Fisher, R. L.

    1977-01-01

    Device uses 12-pole samarium cobalt permanent-magnet rotor and three Hall-effect sensors for commutation. In prototype motor, torque constant (3-phase delta) is 65 oz-in/amp; electrical time constant (L/R) is 0.2 x 0.001 sec, and armature resistance is 20 ohms.

  11. 基于Ansoft的高速永磁无刷直流电机磁场有限元分析%Magnetic Field Finite Element Analysis of High Speed Permanent Magnet Brushless DC Motors Based on Ansoft

    Institute of Scientific and Technical Information of China (English)

    王芳; 陈小军

    2012-01-01

    基于Maxwell二维瞬态磁场分析理论,依据给定的技术指标,运用RMxprt快速确定电机电磁及结构设计方案,并导入Maxwell中建立二维有限元仿真模型,基于场路耦合有限元法对电机的机械特性和效率进行了仿真分析,仿真结果精确地反映了高速永磁无刷直流电机的启动过程,为电机的优化设计、减少转矩脉动、提高启动转矩提供了理论依据.%According to 2D transient magnetic field analysis the theories of the Maxwell and given technical indicators, the electromagnetis and structural scheme of motor were established by RMxprt. And then the Maxwell was importted to create two-dimensional finite element simulation model. The motor' s mechanical characteristics and efficiency were simulated by the magnetic circuit calculation. The simulation results accurately reflect the high speed permanent magnet brushless DC motor starting process, and provided a theoretical basis for the motor optimal design, reduction of torque ripple, improve start torque.

  12. Hardware-in-the-loop simulation of brushless DC motor servo system based on RT-LAB%基于 RT-LAB 的无刷直流电动机伺服系统半实物仿真

    Institute of Scientific and Technical Information of China (English)

    郭长欢; 黄建

    2015-01-01

    为了适应机载电气系统结构的日益复杂变化,保证电气系统性能的良好性,降低飞行试验的风险,提出了一种机载电气系统半实物仿真方法。以无刷直流电机(brushless DC motor ,BLCDM )伺服系统为研究对象,按照RT‐LAB建模规则,搭建了系统仿真模型;设计了以DSP(TMS320F28335)为核心的电动机控制电路和信号调理电路;在CCS3.3开发环境下,完成了电机控制软件的设计。在此平台上,对该伺服系统进行了突加负载和突加给定转速的动态性能仿真,并与全数字仿真的结果进行了对比分析,验证了半实物仿真方法的有效性和准确性。%In order to adapt to the increasingly complex changes of the airborne electrical system structure ,ensure that the electrical performance of the system is w ell ,reduce the risk of flight test ,this paper puts forw ard a kind of airborne electrical system hardware‐in‐the‐loop simulation method .This paper uses the semi‐physical simulation platform RT‐LAB to study brushless DC motor (BLDCM ) servo system .According to the RT‐LAB modeling rules ,the model of the motor was put up .The controller of the motor ,which takes DSP TMS320F28335 as the core ,and signal conditioning circuit were implemented .The control program was accomplished in CCS3 .3 Hardware‐in‐the‐loop simulation experi‐ments were carried out to simulate the serve system’s dynamic performances .The dynamic response of the motor could be simulated by changing the load torque and the speed settings .Compared with digital simulation and real‐time simula‐tion ,the validity and accuracy of hardware‐in‐the‐loop simulation were confirmed .

  13. 高速无刷直流电动机寿命试验故障分析与试验方法改进%Fault Analysis and Method Improvement of High-Speed Brushless DC Motor Life Testing

    Institute of Scientific and Technical Information of China (English)

    秦虎; 王孝利; 程远; 罗新华

    2012-01-01

    Based on the theoretical analysis and experimental verification on shaft breakdowns of the high-speed brash-less DC motor,a new test method was proposed to improve the present ones. The method was applied to the testing process of high-speed brushless DC motor. The experimental results demonstrate that this method is correct and effective.%针对高转速无刷直流电动机寿命试验中出现的转轴卡死故障进行理论分析和试验验证,找出现行的试验方法的不足,结合高转速无刷直流电机的运动特性,提出了一种新的试验方法并将其应用于实际试验过程中,通过试验验证了方法的正确和有效.

  14. Research of the Influence of Sleeve on Rotor Loss and Temperature Rise of Brushless DC Motors%紧圈对无刷直流电动机转子损耗及温升的影响分析

    Institute of Scientific and Technical Information of China (English)

    赵南南; 刘卫国; 诸自强

    2012-01-01

    表贴式无刷直流电动机的永磁体和紧圈如果采用电导率较高的材料,在时间和空间谐波的影响下可能会产生明显的涡流损耗.利用有限元法计算了紧圈分别采用不锈钢和碳纤维两种电导率不同材料表贴式无刷直流电动机的转子涡流损耗,基于计算得到的涡流损耗利用解析集总参数热网络法对两台电机进行了热场分析,并通过实验验证了仿真结果.通过研究发现,采用碳纤维紧圈的电机转子涡流损耗明显减小,转子发热有效改善.%Due to relatively high electrical conductivity of permanent magnets and retaining sleeve of surface-ounted brushless DC machines, significant eddy current loss may be induced by both time and space magneto-motive force harmonics. In this paper, rotor eddy current losses of surface-mounted brushless DC machines with different sleeve materials, which were stainless steel and carbon fiber respectively, were calculated using finite element analysis. Thermal fields of the two machines were analyzed using analytical lumped-circuit method based on the obtained eddy current losses and the predicted temperature rises of machines were verified by experiment results. The research reveals that the rotor eddy current losses of the motor with carbon fiber sleeve were significantly reduced the rotor temperature rise is improved effectively.

  15. 基于FPGA的无刷直流电机数字控制方法研究%Research on Digital FPGA-Based Control Method of Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    敬光红

    2016-01-01

    In order to achieve a simple and efficient brushless DC(BLDC)motor drive system of the brushless DC motor,a simple model of FPGA is presented based on the digital pulse width modulation(PWM)controller,model and control algorithm. The controller will take BLDC motor flux distribution of the ladder as a digital system,low power and the alternate use of high-powered speed adjustment,it is easy to realize the design and implement. In ad⁃dition,a current sensor design is proposed only by using the DC link to reduce the cost and the complexity of hard⁃ware. And through the simulation experiment of the proposed control method was verified,the results show that the maximum error of the proposed method is decreased below 5%. Therefore,the control technology is very suitable for applications that don't require high accuracy.%为了实现简单且高效的无刷直流电机(BLDC)驱动系统,提出了一种简单新型的基于FPGA的数字脉冲宽度调制(PWM)控制器的模型和匹配的控制算法,该控制器将梯形磁通分布的BLDC电机看作是一个数字系统,通过低功率和高功率的交替使用进行速度调节,非常便于设计实现。此外,提出的设计只使用直流环节的一个电流传感器,减少了成本和硬件的复杂性。并通过模拟实验对提出的控制方法进行了证实,结果显示提出方法的最大误差保持低于5%。因此,这种控制技术非常适合不需要高精度的应用。

  16. 基于遗传算法的双余度无刷直流电机优化设计%Genetic algorithm based optimal design for dual-redundancy brushless DC motor

    Institute of Scientific and Technical Information of China (English)

    武志勇; 郭宏; 吕振华; 钱浩

    2011-01-01

    A genetic algorithm(GA) based global optimization for a dual-redundancy brushless DC motor(DR-BLDCM) used in aviation actuators was presented.The aim of the optimal design is to reduce the weight of the motor.First,the objective function was established based on the electromagnetic and thermal models.The electromagnetic models include the flux density and the back-electromotive force coefficient expressed by the analytical method.The thermal models were established by the thermal circuit method,in which an accurate estimation for the iron loss was considered.Then the structural parameters of the dual-redundancy brushless DC motor were optimized by using the GA and taking account of the electromagnetic and thermal characteristic constrains.The result of the optimization shows that the weight of the motor had been reduced by 13.3%.This method can be used as a reference for other motor optimal design.%针对航空电作动系统用双余度无刷直流电机的方案寻优问题,提出了一种基于遗传算法的优化设计方法.通过分析航空作动系统的特点和性能要求得出电机优化设计的目标函数和约束条件.建立电机的电磁和热路模型,得到目标函数和约束条件的解析方程.其中,在电磁模型的建立过程中,采用解析方法得到气隙磁密和反电势系数表达式;在热路模型的建立过程中,采用Bertotti分立铁耗法计算铁心损耗,并利用热路法求解电机各部分的温升.通过遗传算法对电机重量全局寻优.计算结果表明:在满足性能要求的前提下,优化设计方案合理,电机重量减小了13.3%,验证了该优化设计和建模方法的有效性.

  17. 直流无刷电机再生制动系统试验台的设计与验证%Design and Verification of Brushless DC Motor Regenerative Braking System Test Bench

    Institute of Scientific and Technical Information of China (English)

    隋妮; 王广萍; 李仲兴; 张德望; 顾剑波

    2011-01-01

    基于再生制动理论,以电动汽车用轮毂电机为主体,搭建了直流无刷电机再生制动试验台.以回收能量最大化为目标,提出了相应的再生制动控制策略.结合电机的输出特性和工作原理,利用SIMULINK软件建立了再生制动系统模型.通过模型仿真和试验台试验结果的对比分析,验证了再生制动试验台设计方案的可行性和控制策略的合理性.%Basod on theory of regenerative braking, with electric vehicle hub motor as subject, a brushless DC motor regenerative braking test bench is built. To maximize energy recovery, regenerative braking control strategy is proposed in the paper. In accordance with output characteristic and working principle of motor,regenerative braking system is established with software SIMULINK.By modeling simulation and contrastive analysis of the test result, feasibility of design program of regenerative braking test bench and rationality of control strategy are validated.

  18. Research on the Effect of Altering Poles on Permanent Magnetic Brushless DC Motor Performance%极数对永磁无刷直流电动机性能影响的研究

    Institute of Scientific and Technical Information of China (English)

    上官璇峰; 张涛

    2011-01-01

    从永磁无刷直流电动机的基本工作原理出发,设计了电机模型的主要参数.在电机极数为4极,充磁方式分别为径向和平行时,研究了它们各自气隙磁密的谐波、反电动势和瞬态电磁力矩.在永磁无刷直流电动机数学模型的基础上,计算了4极和8极电机的各个物理量,得到了它们各自的相电流波形、电磁力矩波形,并对其进行了对比分析研究.%The major parameters of permanent magnet brushless DC motor (PMBLDCM) model was designed on its basic operation principle. While magnetic lines of force of the four poles motors were radial or parallel, harmonic of their air gap magnetic flux density,back-EMF and transient electromagnet torque were researched. Based on the mathematical model of BLDCM, the physical quantities of two kinds of motor whose poles were designed four and eight were calculated in the software Ansoft 12. Comparabive analysis of the waveforms of the phase current and electromagnetic torque that were got by calculation was studied.

  19. 基于有限元分析的永磁无刷直流电动机优化设计%Optimal Design of Permanent Magnet Brushless DC Motor Based on FEA Analysis

    Institute of Scientific and Technical Information of China (English)

    黄迪西; 崔群; 房菁

    2012-01-01

    基于有限元分析建立了永磁无刷直流电动机的二维和三维有限元模型.在二维分析中,从考虑起动过程和不考虑起动过程两个方面仿真计算了电机的机械瞬态下电机特性和性能.在三维模型中,根据磁场在电机中的分布,分析了磁路和尺寸设计对电机性能的影响.从而提出了一种对电机优化设计的一套完整方案.最后将仿真结果与实验结果进行比较,验证了仿真的可行性和可靠性.%FEA analysis 2D and 3D model were presented respectively. In FEA 2D analysis model, mechanical transient performance of the motor was analyzed form two aspects:considering starting and without considering starting. In FEA 3D model, the effects of the magnetic circuit and motor dimension were analyzed by examining the magnetic fields distribution. A full procedure was proposed for permanent magnet brushless DC motor design. The simulation and experimental results were compared to verify the reliability and feasibility of the simulation.

  20. Design of 9kW Permanent Magnet Brushless DC Motor Using Combination of Magnetic Circuit and Electromagnetic Field Solution%场路结合的9kW永磁无刷直流电动机设计

    Institute of Scientific and Technical Information of China (English)

    白娅梅; 罗玲; 黄其

    2012-01-01

    The design of 9kW permanent magnet brushless DC motor using the combination of magnetic circuit and electromagnetic field solution was presented in the paper. Main electromagnetic parameters, the number and shape of stator slot, the structure of stator and rotor were determined by using the equivalent magnetic circuit while no-load electromagnetic field and speed-torque characteristic were analyzed by means of electromagnetic field analysis software MagNet. The test values of no-load speed and current of the prototype motor match well with the results of simulation analysis. The validity of this method was shown in the motor design.%采用场路结合法设计9kW永磁无刷直流电动机,用磁路法确定电机的主要电磁参数、定子槽数和槽形、转子的磁路结构,运用电磁场分析软件MagNet分析计算空载磁场和机械特性,样机的空载转速、电流与仿真分析结果相一致,验证了采用场路结合法设计电机的有效性.

  1. Design of Permanent Magnet Brushless DC Motor Control System for Air Conditioning%空调用永磁无刷直流电动机控制器设计

    Institute of Scientific and Technical Information of China (English)

    田德文; 徐奇伟; 吴世华

    2011-01-01

    永磁无刷直流电动机是新一代高性能的驱动电机,它高效、节能、控制简单,已在变频空调中得到很好的应用.传统无刷直流电动机控制器结构及控制策略复杂、成本高、节能效果不明显.文中提出了一种采用dsPIC30F2010作为控制芯片、FSBS1 0CH60SPM智能功率模块的无刷直流电机控制器设计方案.该控制器具有体积小、成本低的优点,可以广泛的应用于直流变频节能空调中.%The permanent magnet brushlese DC motor has been a very good application in variable frequency air conditioning as an advanced drive motor, with the features of high efficiency, low cost and simple operation. The traditional control strategy and structure of brushless DC motor control system are complicated, costly and power -wasting. In this paper, an control system with the control core of dsPIC30F2020 and intelligent power module FSBS10CH60SPM was designed. This design has smaller volume and lower cost, and can be widely used in variable frequency air conditioning.

  2. 基于Maxwell的单相无刷直流电动机分析与设计%Analysis and Design of Single-phase Brushless DC Motors Using Maxwell

    Institute of Scientific and Technical Information of China (English)

    陈文敏; 黄开胜; 何良远; 杨勇

    2013-01-01

    This paper designed a single phase brushless DC motor of 2000 r/min,6 poles,200 V,100 W,and presented the way to design the motor.The motor was manufactured and tested.The paper established a 2D finite element analysis model for the motor using Maxwell of Ansoft,and then simulated some static and dynamic performances of the motor.The paper provided test results together with its simulation results.The errors between the simulation results and the test results were less than 8%,which confirmed the accuracy of the 2D finite element model and the simulation with the model.%以一款2000 r/min、6极、200 V、100 W单相无刷直流电动机为例,给出了设计这种单相无刷直流电动机的思路,完成了电磁方案设计,并试制了样机,进行了有关性能测试.利用Ansoft/Maxwell建立了这款电动机的二维有限元仿真模型,对其静态和动态性能进行仿真.仿真结果与样机试验结果各项性能指标误差在8%以内,验证了仿真模型和仿真分析的准确性.

  3. 基于开关函数的无刷直流电动机系统新型建模方法%Simulation of Brushless DC Motor System Based on Switching Function

    Institute of Scientific and Technical Information of China (English)

    马银龙; 刘景林; 谢映宏

    2011-01-01

    在分析无刷直流电动机数学模型及换相过程的基础上,在Simulink中,建立了无刷直流电动机系统的模型.其中,重点采用开关函数对逆变器进行了建模,加快模型仿真速度.同时该模型可以实现电机性能、故障保护、以及PID速度闭环控制的综合仿真.仿真实验结果表明,该模型对电流的动态模拟准确,计算效率高,为无刷直流电动机系统仿真提供了一种新方法.%Based on the analysis of the mathematical model and commutation of the Brushless DC motor (BLDCM) , the simulation model of the BLDCM system was proposed in Simulink. The inverter model was built based on switching function to accelerate the simulation speed. All the simulation of motor performance, fault protection,PID speed loop control system can be achieved. Simulation results show this model has the advantage of high accuracy current dynamic simulation and high calculation efficiency. This offers a new method for the BLDCM system simulation.

  4. 新型盘式无刷直流电动机及其控制器的设计%Design of Disk Brushless DC Motor and its Controller

    Institute of Scientific and Technical Information of China (English)

    高强; 贡俊; 谭茀娃; 金如麟

    2001-01-01

    With the advantage of producing high torque at low speed, the disk brushless DC (BLDC) motor can be used to directly drive the front wheel or the rail wheel of electrical vehicles, therefore removing the extra gear change mechanism, which not only reduces the weight of the vehicles as a whole ,but increases the system efficiency .Additionally, because the axial dimension is much shorter than the ordinary radial magnetic- field motor ,it is very suitable for installation. The function of energy feedback is included in the controller to lengthen the discharging time of the battery after one- time recharging.%盘式无刷直流电机低速下力矩大,在电动车辆中能够直接驱动前轮或后轮,从而省去了机械变速装置,不仅减轻了整车重量,而且还提高了系统效率。文章介绍一种新颖的盘式电机绕组结构及其计算方法,论述了控制器中能量反馈功能的原理。实现这一功能在一定程度上延长了电池一次充电的使用时间,在电动车辆中具有特别的意义。

  5. 飞轮储能系统用永磁无刷直流电机设计与分析%Design and Analysis of Permanent Magnet Brushless DC Motor for Flywheel Energy Storage System

    Institute of Scientific and Technical Information of China (English)

    李保军; 王志新; 吴定国

    2012-01-01

    采用Ansoft中基于磁路法的RMxprt模块对2 kW/100 Wh容量的飞轮储能试验系统中所用的高速永磁无刷直流电机进行了具体设计,并在Ansoft Maxwell 2D中运用有限元的方法分析了电机内电磁场的分布情况及电机的静态和动态特性,分析结果表明所采用的电机方案能够满足飞轮储能系统的要求,具有一定的可行性和实用性.与传统的设计方法相比,提高了效率和精度,具有很强的工程实用性.%The RMxprt module of Ansoft was adopted to design the permanent brushless DC motor for the 2 kW/ 100 Wh flywheel energy storage system, the magnetic field distribution of the motor was calculated through the method of finite element analysis method in Ansoft Maxwell 2D,the static and dynamic characteristic of the motor was also analyzed. The results showed that the design scheme which is feasible and practical of the motor can meet the demand of the flywheel energy storage system. Compared with the traditional design method, efficiency and accuracy has been greatly improved and it also has a strong engineering practicability.

  6. Comparison of solar panel cooling system by using dc brushless fan and dc water

    Science.gov (United States)

    Irwan, Y. M.; Leow, W. Z.; Irwanto, M.; M, Fareq; Hassan, S. I. S.; Safwati, I.; Amelia, A. R.

    2015-06-01

    The purpose of this article is to discuss comparison of solar panel cooling system by using DC brushless fan and DC water pump. Solar photovoltaic (PV) power generation is an interesting technique to reduce non-renewable energy consumption and as a renewable energy. The temperature of PV modules increases when it absorbs solar radiation, causing a decrease in efficiency. A solar cooling system is design, construct and experimentally researched within this work. To make an effort to cool the PV module, Direct Current (DC) brushless fan and DC water pump with inlet/outlet manifold are designed for constant air movement and water flow circulation at the back side and front side of PV module representatively. Temperature sensors were installed on the PV module to detect temperature of PV. PIC microcontroller was used to control the DC brushless fan and water pump for switch ON or OFF depend on the temperature of PV module automatically. The performance with and without cooling system are shown in this experiment. The PV module with DC water pump cooling system increase 3.52%, 36.27%, 38.98%in term of output voltage, output current, output power respectively. It decrease 6.36 °C compare than to PV module without DC water pump cooling system. While DC brushless fan cooling system increase 3.47%, 29.55%, 32.23%in term of output voltage, output current, and output power respectively. It decrease 6.1 °C compare than to PV module without DC brushless fan cooling system. The efficiency of PV module with cooling system was increasing compared to PV module without cooling system; this is because the ambient temperature dropped significantly. The higher efficiency of PV cell, the payback period of the system can be shorted and the lifespan of PV module can also be longer.

  7. 无刷直流电机模糊PI控制系统建模与仿真%Modeling and simulation of fuzzy-PI control system for brushless DC motors

    Institute of Scientific and Technical Information of China (English)

    雷金莉

    2012-01-01

    According to the principle and structure of the brushless DC motor (BLDCM) , based on analysis of BLDCM mathematic model, a simulation model of BLDCM speed and current double-closed-loop control system was established in Matlab/Simulink by means of modularization method. The static and dynamic performances of BLDCM were simulated. The reasonability and validity were testified by the coincidence of the simulation results and theoretical analysis. This model has the virtues of simpleness and understandability. Its parameters are easy to modify and replace. It is convinient to be applied to the research of other control algorithms.%从无刷直流电机(BLDCM)的工作原理和结构出发,在分析了BLDCM数学模型的基础上,采用模块化方法,在Matlab/Simulink中建立了BLDCM转速、电流双闭环控制系统模型.利用该模型进行了电机动静态性能的仿真研究,仿真结果与理论分析一致,表明该方法建立的BLDCM控制系统仿真模型合理、有效.该模型简单、直观、参数易于修改和替换,可方便地用于其他控制算法仿真研究.

  8. Application of fuzzy self-adaption PI control on brushless DC motor speed regulating system%模糊自适应PI控制在直流无刷电动机调速系统的应用

    Institute of Scientific and Technical Information of China (English)

    胡发焕; 唐军; 邱小童

    2012-01-01

    在分析直流无刷电动机的工作原理和数学模型的基础上,提出基于速度环和电流环的双环控制模式,在速度环中采用模糊自适应PI控制方式,在电流环中采用传统的PID控制方式.实验表明,与传统PID控制方式相比,采用模糊自适应PI控制,在负载或参数发生变化时,具有转速波动更小、鲁棒性更强的特点,是一种更优越的控制方法.%Based on analyzing the principle and mathematical model of the brushless DC motor, the paper proposes a control model on the basis of speed loop and current loop, self-adaption fuzzy PI control model is a-dopted in the speed loop, and traditional PID control model is used in the current loop. It is showed that when the load or parameters vary, comparing to traditional PID control model, the self-adaption fuzzy PI control model gets less fluctuation and better robustness.

  9. Realization of High-Performance Steady Speed Control System of Brushless DC Motor%高性能无刷直流电机数字稳速控制系统实现

    Institute of Scientific and Technical Information of China (English)

    李伟忠; 姚勤

    2012-01-01

    介绍了一种高性能无刷直流(BLDC)电机数字稳速控制系统的实现方案。给出了基于DSPTMS320F2812芯片的系统硬件和软件设计。采用了基于变参的积分分离比例积分(PI)控制方案。模拟环境和实物实验结果表明系统的稳速控制性能理想。%The implementation scheme of digital steady speed control system for brushless DC motor was introduced in this paper. The design of the hardware and software of the control system which was based on DSP TMS320F2812 was given out. The detaching proportion and integral control (PI) was adopted based on adjusting parameter. The results of the environment simulation and driving experiment showed that the control system had ideal performance for control.

  10. 基于无刷直流电机的执行器防堵转系统的设计%Design of electric actuator locked rotor protective system based on brushless DC motor

    Institute of Scientific and Technical Information of China (English)

    张寿春

    2012-01-01

    In order to protect the electric actuator driven by the brushless DC motor and controller for locked rotor,avoid the controller is damaged.The method of protection of taking LPC2132 central processing unit and hardware circuit of electric current collected of the control system,at same time intelligent judgment and treatment by using the method of software.Realization of intelligent control in the state of locked rotor,protect the controller.The experiment shows that: the system has reliability and the advantages of processing locked rotor in intelligent mode.%为了防止直流无刷电机驱动的执行器因电机堵转而损坏控制器,控制系统采用以LPC2132微处理器和电流采集等电路相结合的硬件保护方法,同时采用软件进行智能判断与处理。实现了电动执行器在堵转的状态下的智能控制,保护了控制器。实验结果表明:该系统具有可靠性高及智能处理堵转等优点。

  11. Design of Brushless DC Motor Controller Tracking Complex Position Curve%实现复杂位置曲线跟踪的直流无刷电机控制器设计

    Institute of Scientific and Technical Information of China (English)

    许家林; 王鹤; 朴仁官

    2012-01-01

    In order to resolve the problem that exiting Brushless DC (BLDC) motor controllers are incapable of tracking a complex position curve due to their low-frequency command reception, a BLDC motor controller was designed with enhanced reception that was able to handle instructions updating at a rate of 1 kHz. In the aspect of hardware, the microcontroller ARM Cortex-M3 was used as the CPU and the chip A4936 was a-dopted as its 3-phase bridge pre-driver. In the aspect of software, a PID control algorithm with speed and acceleration feed-forward was applied. Tests were implemented using instructions which update at a rate of 1 kHz, the results acquired illustrated that the BLDC motor controller has high tracking precision and fast response speed.%针对现有的无刷直流电机控制器不能接收高频数字指令以实现复杂位置曲线跟踪的问题,设计了指令更新速率高达1 kHz的控制器.硬件上,采用ARM Cortex-M3微控制器作为处理器,使用芯片A4936作为3相桥的换相逻辑控制器.软件上,应用了带有速度、加速度前馈的PID控制算法.使用更新速率是1 kHz的指令进行测试,结果表明,有很高的跟踪精度和较快的响应速度.

  12. General Method to Determine Hall Sensor Position Applicable to all Kinds of Brushless DC Motors%适用于各类无刷直流电动机确定霍尔传感器位置的通用方法

    Institute of Scientific and Technical Information of China (English)

    谭建成

    2014-01-01

    This paper presented a relatively simple and convenient general method to determine the Hall sen-sors position of brushless DC motor , and given application examples in single phase to 11 phases motors and several windings topology.%本文提出一个较简捷地确定无刷直流电动机霍尔传感器安放位置的通用方法,并给出在单相至十一相电动机和几种绕组拓扑的应用例子。

  13. 基于DSP的无刷直流电动机控制系统设计%A Design of Control System Based on DSP for Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    王敏荣; 楼顺天

    2006-01-01

    无刷直流(Brushless DC)电动机以其结构简单、性能优越的特点得到广泛应用.论文应用Microchip公司一款DSP(dsPIC30F2010)设计了无刷直流电动机控制系统;详细介绍了该电动机控制系统的硬件结构及软件流程.

  14. Electromagnetic Field Analysis of Rare Earth Permanent Magnet Brushless DC Motor Based on Ansoft%基于 Ansoft 的稀土永磁无刷直流电机的电磁场分析

    Institute of Scientific and Technical Information of China (English)

    谢晓敏; 卜燕梅; 夏佳青

    2015-01-01

    Taking a three-phase six-state rare earth permanent magnet poles brushless DC motor as an analytical model, electromagnetic field simulation were calculated using finite element analysis software Ansoft. And two no-load and load transients were simulated.The magnetic field lines, the magnetic flux density reluc-tance torque and counter electromotive force curve were gotten.The flux density and winding current were simu-lated.Through the work of the two states electromagnetic field simulation results analysis, the cogging torque rip-ple generated due to provide a reliable basis for optimal motor design parameters can be reduced.%以一个三相六状态两极的稀土永磁无刷直流电机作为分析模型,采用Ansoft有限元分析软件对电机电磁场进行了空载和负载两种瞬态的计算和仿真,得到了磁力线、磁通密度、磁阻力矩和反电动势曲线,并对气隙磁密和绕组电流进行了仿真分析。通过对两种工作状态的电磁场仿真结果对比分析,可以减少由于齿槽效应而产生的转矩脉动,为优化电机设计参数提供可靠依据,具有一定的工程意义。

  15. Research on the controlling of rare earth permanent magnet brushless DC motor based on TMS320C242%基于TMS320C242的稀土永磁无刷直流电机控制系统研究

    Institute of Scientific and Technical Information of China (English)

    董艺

    2012-01-01

    对用TMS320C242控制稀土永磁无刷直流电机(REPMBLDCM)进行了深入的探讨。作为驱动设备,稀土永磁无刷直流电机在很多方面性能优于普通直流电机;作为控制核心,TMS320C242无论是集成度还是控制速度都远超普通的单片机。所以用TMS320C242控制REPMBLDCM可获得极为优秀的控制效果和驱动性能。%A deep discussion has been made on how to control rare earth permanent magnet brushless DC motor with TMS320C242. As a driving device, rare earth permanent magnet brushless DC motor is superior to the common DC motor in many ways. As a core of the control system, TMS320C242 is far more superior to the common single chip microcontroller unit whether on its integration or its controlling speed. Therefore, excellent control effects and driving properties can be obtained by adopting TMS320C242 to control REPMBLDCM.

  16. 基于Stribeck摩擦模型的无刷直流电机控制系统设计与仿真%Design and Simulation of Brushless DC Motor Control System Based on Stribeck Friction Model

    Institute of Scientific and Technical Information of China (English)

    许宏; 张怡; 王凌; 陈锡爱

    2011-01-01

    针对无刷直流电机(BLDCM)控制系统在实际运行中存在摩擦负载的问题,利用模糊PID控制的优点,提出了系统基于Stribeck摩擦模型的模糊PID控制方案.在分析BLDCM数学模型的基础上,运用MATLAB/Simulink对BLDCM速度、电流双闭环调速系统进行建模和系统仿真,并与采用常规PID算法的系统进行了比较.仿真结果表明基于Stribeck摩擦模型的模糊PID控制系统具有较好的给定适应性和抗干扰性,优于常规PID控制系统的性能.%Taking account of the presence of friction load in actual operation of brushless DC motor (BLDCM)control system, used the advantages of fuzzy PID control, the scheme of fuzzy PID control algorithm for the system was proposed based on the Stribeck friction model.Based on the BLDCM math model, the system of double-closed loop control of current and speed for BLDCM was modeled and simulated based on the use of MATLAB/ Simulink,and compared with normal PID's.The simulation results demonstrated that the system which adopt fuzzy PID control algorithm based on the Stribeck friction model had good adaptability and anti-jamming ability, which was better than PID' s.

  17. 非换相期间无刷直流电机转矩脉动分析与抑制%Analysis and Suppression of Torque Ripple During Non-commutation of Brushless DC Motor

    Institute of Scientific and Technical Information of China (English)

    李怀兵; 丑武胜; 冯震

    2011-01-01

    Torque ripple is an important factor affecting the performance of Brushless DC motor (BLDCM).In this paper, the non-commutation torque ripple was analyzed, focusing on the torque ripple caused by PWM_ON modulation.The main part of the torque ripple was caused by the PWM_OFF, and the diode freewheeling of inactive phase can compensate the torque ripple to some extent.Meanwhile, hysteresis current control was proposed to suppress the non-commutation torque ripple.The simulation and experiment show the difference between the method and the traditional method, and prove the validity of the method suppressing the torque ripple during non-commutation.%无刷直流电机的转矩脉动是影响其性能的重要因素.该文针对非换相期间的转矩脉动进行了分析,重点研究了PWM_ON调制方式时的转矩脉动.PWM信号为"OFF"时续流引起的转矩脉动占主要部分,非导通相续流在一定程度上可以补偿PWM关断时造成的转矩脉动.同时,提出使用滞环电流控制方法,采用该方法可以抑制非换相期间转矩脉动.通过仿真分析和实验验证了该方法和传统方法的差异,证明了该方法在非换相期间抑制转矩脉动的有效性.

  18. 基于模糊控制的低成本无刷直流电机控制方法%Low Cost Control Method for Brushless DC Motors Based on Fuzzy Logic Controller

    Institute of Scientific and Technical Information of China (English)

    张凌栋; 王正仕

    2012-01-01

    为降低无刷直流电机控制器的成本,设计了一种无需高精度光电编码器,仅使用低成本的霍尔位置信号进行测速的速度控制方法,在其中通过使用模糊控制,解决了由于速度采样率不均衡引起的调速性能差和系统不稳定的问题,使用Simulink软件对该方法进行了仿真试验,并将此应用于单调速工业平缝机控制系统,在控制系统中使用了TI公司的TMS320F28027 DSP芯片.实验结果证明,系统工作稳定,速度调节性能良好.%To lower the cost of brushless DC motor controller, designed a new speed control method using hall effect position sensors to provide speed measurements which can work without a high resolution encoder. A fuzzy logic controller was used to fix the systems instability and poor performance of speed adjusting, both of which were caused by the uneven speed sample rate. This method was simulated on computer by Simulink software. A sewing machine control system was also designed employing this new method using TMS320F28027 digital signal processor. The result of experiments showed that system worked stably and effectively.

  19. Design and Test of the Controller for EPS System with Brush-less DC Motor%无刷直流电机助力式EPS控制器设计与试验

    Institute of Scientific and Technical Information of China (English)

    江浩斌; 唐斌; 耿国庆

    2011-01-01

    基于无刷直流电机(BLDCM)模型和汽车电动助力转向(EPS)动力学模型,构建了BLDCM控制仿真模型和EPS性能仿真模型;设计了以ARM7 LPC2131为控制器内核和以MC33034P120为驱动模块的EPS控制器硬件;分析了EPS的助力、回正和阻尼控制对控制器硬件的要求,给出了EPS控制软件的主程序和A/D、速度信号采集与中断服务子程序流程;最后将BLDCM助力式EPS及其控制系统装车进行原地转向试验和蛇形试验,试验结果表明,所设计的EPS控制器与整车匹配良好,性能稳定.%Based on the model for brush-less DC motor (BLDCM) and the dynamic model for electric power steering (EPS) system, the simulation models for BLDCM control and EPS performance are set up. The EPS controller hardware with ARM7LPC2131 as its core and MC33034P120 as drive module is designed, and the requirements of power assistance, aligning and damping controls on controller hardware are analyzed. The flow charts of main program and its subroutine for A/D and speed signals acquisition and interrupt service are given. Finally the BLDCM assisted EPS and its control system are installed on a newly-launched car for spot turn and slalom tests. The results of tests show that the EPS controller designed well matches the vehicle with stable performance.

  20. Analysis on the Operation Characteristics of Brushless DC Motor Using Bootstrap Driving Method%自举驱动方式下无刷直流电机运行特性分析

    Institute of Scientific and Technical Information of China (English)

    周西峰; 孙浩; 王丹; 郭前岗

    2011-01-01

    This paper analyzes the main problems of brushless DC motor(BLDCM) driving control system using bootstrap driving method. It is noted that PWM scheme is restricted when bootstrap driving method is adopted,thus initiated problems of more torque ripple, the diode freewheeling of the inactive phase, difficulties in sensorless BLDCM control and the heat generation of power switches.The basic reasons of those problems are profoundly analyzed through theoratical and mathmatical methods,and the correctness of the conclusion is also verified by experiment. Meanwhile, solution is also proposed for those which have requirements on more restricted specifications.%详细分析了自举驱动方式下无刷直流电机(BLDCM)控制系统中存在的主要问题,指出了因采用自举驱动带来的PWM调制方式受限问题以及由此引发的转矩脉动、非导通相续流、无位置传感器控制实施困难和开关管发热问题.在此通过原理分析和公式推导,深入分析了产生上述问题的根本原因,并通过实验验证了所推结论的正确性,同时给出了在控制指标要求较高的场合解决上述问题的方法.

  1. Research of simulation for brushless DC motor with dual closed-loop cascade control system%无刷直流电机双闭环串级控制系统仿真研究

    Institute of Scientific and Technical Information of China (English)

    吕伟鹏

    2011-01-01

    In order to analyze and design the control system of BLDCM effectively,a new method of modeling and simulation for brushless DC motor under Matlab is proposed,this method is based on modular.Each module is described in detail.and then test the control system with a classic double-loop control method of modeling and simulation. The experimental results shows that the waveform of simulation consistent with analysis of theoretical The intergral separation which used in PI regulator makes zero-shoot on speed, and the system runs stability.It provides a great convenience for designing and debugging the system.%为了有效地分析和设计BLDCM控制系统,基于Matlab提出了一种新型的模块化的BLDCM控制系统仿真建模的方法。对各个模块进行了详细说明。最后,采用经典的速度、电流双闭环控制方法对该建模方法进行了仿真测试。结果表明仿真波形符合理论分析。转速环引入了积分分离的PI调节器使超调量为零,系统特性稳定,它为实际系统设计和调试工作提供了极大方便。

  2. Position-Sensorless Rotor Position Detection of Brushless DC Motor Based on H_PWM-L_PWM Modulation Model%基于H_PWM-L_PWM调制的无感无刷直流电机转子位置的检测

    Institute of Scientific and Technical Information of China (English)

    王宝忠; 孙健涛; 要丹

    2011-01-01

    Exactly detecting of rotor position was required during the control of brushless DC motor, and back EMF detecting method was a simple, effective way to detect the position-sensorless rotor position of brushless DC motor. A back EMF detecting method based on the H_PWM-L_PWM modulation model by analyzing the freewheeling condition of a non-conducted phase of this model was raised. This back EMF detecting method needed not to detect the center voltage of the three-phase winding, and gained a two times of the back EMF of a non-conducted phase. The simulation under MATLAB software environment and experimental results showed that this method had good performance in low speed control of brushless DC motor.%无刷电机的控制需要准确检测到转子的位置,反电动势法是检测无位置传感器无刷直流电机转子位置的一种简单、有效的方法.采用二相导通星形三相六状态的控制模式,通过分析在H_PWM-L PWM调制方式下不导通相的续流情况,提出了基于该调制方式的反电动势检测方法.该反电动势检测法不需要检测三相绕组中点电压,所获得的是不导通相的两倍的反电动势.MATLAB仿真和试验结果证明,该检测方法具有良好的低速控制性能.

  3. High torque DC motor fabrication and test program

    Science.gov (United States)

    Makus, P.

    1976-01-01

    The testing of a standard iron and standard alnico permanent magnet two-phase, brushless dc spin motor for potential application to the space telescope has been concluded. The purpose of this study was to determine spin motor power losses, magnetic drag, efficiency and torque speed characteristics of a high torque dc motor. The motor was designed and built to fit an existing reaction wheel as a test vehicle and to use existing brass-board commutation and torque command electronics. The results of the tests are included in this report.

  4. The Commutation Process Analysis and the Method Reducing Commutation Torque Ripple of Brushless DC Motors Based on the Coordinate Transformation%采用坐标变换的无刷直流电机换相过程分析及减小换相转矩脉动的方法

    Institute of Scientific and Technical Information of China (English)

    姜卫东; 胡杨; 黄辉; 张忠

    2015-01-01

    该文首先介绍了无刷直流电机的数学模型.利用坐标变换,在两相αβ静止坐标系下分析了无刷直流电机的换相过程.得到了两相αβ静止坐标系下无刷直流电机换相时的能量转换关系,推导出换相过程无转矩脉动的约束条件,得到最短换相时间的无换相转矩脉动的调制方法.两相αβ静止坐标系下将换相过程的控制转换为两个分量的控制,一个用来控制转矩,另一个用来控制换相时间.避免了求解其间复杂的电路过程,使得物理概念更明确,简单清晰地得到换相过程中无转矩脉动的约束条件,为无刷直流电机换相转矩脉动研究找到另一新的思路.最后通过实验验证了该方法的可行性和有效性.%Firstly the mathematical model of brushless DC motors (BLDCM) is introduced in this paper. The commutation process of brushless DC motors is analyzed in the two-phase αβ stationary coordinate by using coordinate transformation. The energy conversion relationship of brushless DC motors is obtained in the two-phase αβ stationary coordinate, the restrictive condition for reducing the torque ripple is derived during the commutation process in the αβ coordinate. The modulation method for shortest commutation time without the commutation torque ripple is obtained. The commutation is transferred the two components control, one is applied to control the toque and the other is used to control the commutation time. The complicated circuit equations during the commutation are avoided to solve, obtaining the clearer physical concept and the restriction condition with no torque ripple during the commutation. Find another new idea to study the commutation torque ripple of the brushless DC motor. Finally, the feasibility and effectiveness of the method are verified by experiments.

  5. Analysis and Design Considerations of a High-Power Density, Dual Air Gap, Axial-Field Brushless, Permanent Magnet Motor.

    Science.gov (United States)

    Cho, Chahee Peter

    1995-01-01

    Until recently, brush dc motors have been the dominant drive system because they provide easily controlled motor speed over a wide range, rapid acceleration and deceleration, convenient control of position, and lower product cost. Despite these capabilities, the brush dc motor configuration does not satisfy the design requirements for the U.S. Navy's underwater propulsion applications. Technical advances in rare-earth permanent magnet materials, in high-power semiconductor transistor technology, and in various rotor position-sensing devices have made using brushless permanent magnet motors a viable alternative. This research investigates brushless permanent magnet motor technology, studying the merits of dual-air gap, axial -field, brushless, permanent magnet motor configuration in terms of power density, efficiency, and noise/vibration levels. Because the design objectives for underwater motor applications include high-power density, high-performance, and low-noise/vibration, the traditional, simplified equivalent circuit analysis methods to assist in meeting these goals were inadequate. This study presents the development and verification of detailed finite element analysis (FEA) models and lumped parameter circuit models that can calculate back electromotive force waveforms, inductance, cogging torque, energized torque, and eddy current power losses. It is the first thorough quantification of dual air-gap, axial -field, brushless, permanent magnet motor parameters and performance characteristics. The new methodology introduced in this research not only facilitates the design process of an axial field, brushless, permanent magnet motor but reinforces the idea that the high-power density, high-efficiency, and low-noise/vibration motor is attainable.

  6. Simplified Modeling, Analysis and Simulation of Permanent Magnet Brushless Direct Current Motors for Sensorless Operation

    Directory of Open Access Journals (Sweden)

    E. Kaliappan

    2012-01-01

    Full Text Available Problem statement: In this study, a simplified modeling and experimental analysis of Permanent Magnet Brushless DC (PMBLDC motors for Sensorless operation using MATLAB/SIMULINK. This model provides a mechanism for monitoring and controlling the voltage, current, speed and torque response. Approach: BLDC motor is modeled as sub-blocks. The inverter and switching function are implemented as S-function builder block. The Sensorless scheme employs direct back emf based zero crossing detection technique. Results: The proposed model with Sensorless control technique with back emf zero crossing detection is tested in the BLDC Motor and the performance was evaluated. The simulated and experimental results show that the proposed modeling works quite well during starting and running conditions. Conclusion/Recommendation: The developed model consists of several independent sub-blocks, that can be used in the modeling of Permanent Magnet Sinusoidal Motor and induction motor. Hence the developed simulation model is a design tool to study the dynamic behavior of Sensorless Controlled Brushless DC Motor.

  7. Modeling of brushless dc generating systems using diakoptics

    Science.gov (United States)

    Vadher, Vinod; Gregory, Keith; Kettleborough, J. G.; Smith, Ivor R.

    1993-01-01

    The mathematical modeling of a brushless dc generator is described, as an illustration of the application of diakoptic techniques to the analysis of small-scale electrical power supply systems. Modeling of the generator and its output rectifier is accomplished using an established matrix technique that accounts for the continuously changing conduction pattern of the diode bridge network. The advantages of using diakoptics are introduced when consideration is given to the main generator linked to its exciter and to the automatic voltage regulator and permanent magnet generator which are often included in a complete unit. A solution algorithm is presented for this overall arrangement and a comparison is made between theoretical and practical results for a typical 3-stage 4000 rev/min 10.3 kW 28 V unit.

  8. Research on Direct Torque Control Method of Brushless DC Motor for Electric Power Steering%电动助力转向用无刷直流电机直接转矩控制方法研究

    Institute of Scientific and Technical Information of China (English)

    陈修波; 黎健明; 张志林; 金挺; 杭俊

    2014-01-01

    结合EPS系统的功能特点,提出1种适用于汽车转向的无刷直流电机( BLDC)系统直接转矩控制( DTC)方法,以提升汽车转向系统的控制性能。从BLDC系统的转矩特性和磁链特性的关系入手,根据电机系统的转矩、磁链跟踪误差及定子磁链所处扇区号,查询预先规划的离线查找表( LUT),直接输出最优的电压空间矢量。并基于Matlab/Simulink仿真平台进行BLDC调速系统的仿真实验。结果表明,DTC方法可以对电磁转矩脉动进行有效控制,而且能大大提高BLDC的动、稳态驱动性能,提供了1种适用于电动助力转向EPS系统控制的新思路。%According to the functional characteristics of EPS system , this article proposes a brushless DC motor ( BLDC) direct torque control ( DTC) method which is suitable to the automobile steering to improve the control performance of the automobile steering system .Beginning with the relationship between the torque and flux linkage characteristics of BLDC system , and according to the motor system′s torque, flux tracking error and sector number of the stator , it is to search for the pre-planned offline lookup table ( LUT) and directly output the optimal voltage space vector .Finally, the experiment of BLDC control system is simulated based on the Matlab/Simulink simulation platform .The experimental results show that the DTC method can effectively control the electromagnetic torque ripple , and greatly improve the dynamic , steady driving performance of BLDC , and provide a new idea that is suitable for the EPS control of the electric power steering system .

  9. 无刷直流电机驱动系统逆变器的开路故障诊断%A Diagnosis Method for Inverter Open-circuit Faults of Brushless DC Motor Driver Systems

    Institute of Scientific and Technical Information of China (English)

    王强; 王友仁; 张子富; 宋哲

    2013-01-01

    Inverter fault diagnosis is the premise of the fault tolerance control, which is helpful to improve the reliability of motor driver systems. This paper presented a novel diagnosis method for the inverter open-circuit fault of brushless DC motor (BLDCM) driver systems in high side pulse width modulation-low side on (H_PWM-L_ON) modulation mode. In the proposed method, the difference of line voltages during the PWM_ON and PWM_OFF time was considered as the fault feature to detect the open-circuit fault, and in the next working mode of the inverter, the faulty switch could be identified. In order to reduce application cost, this paper designed a circuit, as well as the corresponding software algorithm, to get the difference of line voltages by sampling the terminal voltages. The maximum diagnosis time is no less than one electrical period. This method has the features of a simple circuit, convenient implement, high reliability, low cost, and is immune to closed-loop or open-loop control strategies. The experiment results verified the effectiveness of the proposed method.%逆变器的故障诊断是实现容错控制的前提,有助于提高电机驱动系统的可靠性。针对上桥臂PWM调制、下桥臂常开调制方式下的无刷直流电机驱动系统逆变器,提出了一种新颖的开路故障诊断方法。该方法将PWM周期内ON时的线电压与 OFF 时的线电压的差值作为特征量进行故障检测;在逆变器的下一工作模式中定位出具体的故障功率管。为了降低应用成本,提出了分时采集端电压来估计线电压差的软件算法与检测电路。最大诊断时间为1个电周期。该方法硬件电路简单、实现方便、可靠性高、成本低,且不受开环、闭环控制等策略的影响。实验结果表明了所提方法的正确性和有效性。

  10. Numerical simulation of dynamics of brushless dc motors for aerospace and other applications. Volume 2: User's guide to computer EMA model

    Science.gov (United States)

    Demerdash, N. A. O.; Nehl, T. W.

    1979-01-01

    A description and user's guide of the computer program developed to simulate the dynamics of an electromechanical actuator for aerospace applications are presented. The effects of the stator phase currents on the permanent magnets of the rotor are examined. The voltage and current waveforms present in the power conditioner network during the motoring, regenerative braking, and plugging modes of operation are presented and discussed.

  11. Research on Control Technology of Double-winding Brushless DC Motor%双绕组无刷直流电机控制技术研究

    Institute of Scientific and Technical Information of China (English)

    罗斌; 刘泉洲; 黎福海; 王志华

    2014-01-01

    From the perspectives of physical structure, mathematical model and simulation model of double-winding motor, in this paper, the double redundancy control of motor is realized. The rotational speed control is completed by using the fuzzy PID algorithm. Finally, it discusses its application prospect in refrigeration equipment.%本文从双绕组电机的物理结构、数学模型及其仿真模型入手,实现电机的双余度控制,并用模糊PID算法实现电机的转速控制,最后讨论了其在制冷设备中的应用前景。

  12. Numerical simulation of dynamics of brushless dc motors for aerospace and other applications. Volume 1: Model development and applications, part A

    Science.gov (United States)

    Demerdash, N. A. O.; Nehl, T. W.

    1979-01-01

    The development, fabrication and evaluation of a prototype electromechanical actuator (EMA) is discussed. Application of the EMA as a motor for control surfaces in aerospace flight is examined. A mathematical model of the EMA is developed for design optimization. Nonlinearities which complicate the mathematical model are discussed. The dynamics of the EMA from the underlying physical principles are determined and a discussion of similating the control logic by means of equivalent boolean expressions is presented.

  13. Influence of Square Wave Current and Sine Wave Current on Rotor Temperature in Brushless DC Motor%方波电流和正弦波电流对无刷直流电动机转子温升的影响

    Institute of Scientific and Technical Information of China (English)

    解恩; 王璞

    2012-01-01

    For rotor temperature rise problem of brushless DC motor,the math model was constructed to square wave armature current, and Fourier decomposition was done. Each order harmonic amplitude was got, and they would cause losses in rotor. For measure the influence of square wave current, sine wave current and cogging construction on rotor temperature rise, two same 11 kW brushless DC motors were selected to form dual-drive construction. Some experiments were designed on rated load to separate their own rotor temperature rise.%针对无刷直流电动机转子温升问题,对电枢方波电流数学建模并进行傅里叶分解,得到各次谐波的幅值比例,这些谐波会在电机转子中产生损耗.为了测定方波电流、正弦波电流以及电机齿槽结构对电机转子温升影响程度,以两台同样11 kW无刷直流电动机组成对拖结构,设计实验分离出额定条件下他们对转子所产生的温升.

  14. Research on Torque Balance of Brushless DC Motor Control Based on Variable Structure Sliding Mode%基于滑模变结构控制算法的无刷直流电机力矩平衡控制系统研究

    Institute of Scientific and Technical Information of China (English)

    黄元峰; 王海峰

    2012-01-01

    The shortage of the traditional PI control theory used in the output torque balance control of several brushless DC motors was pointed out. The model of the BLDCM was set up, and the state equation was given. Based on the model, the algorithm of variable structure sliding mode control ( VSSMC) was used to keep the torque balance of two brushless DC motors. The sliding surface and the variable structure control law were designed, and the stability of the system was analyzed. This method was proved to be effective by simulation.%针对多台无刷直流电机力矩平衡的控制问题,指出了传统的PI控制算法存在的不足;建立了无刷直流电机的数学模型,并给出了其状态方程;设计了2台无刷直流电机力矩平衡控制的滑模变结构控制模型,选取了滑模面,计算了控制律,并进行了系统稳定性分析;最后进行了系统仿真,与传统的PI控制进行比较,得到了理想的控制效果.

  15. 基于换相与电流控制对无刷直流电机非理想反电势转矩脉动的控制%The suppression to Torque Ripple of Brushless DC Motor under Non-Ideal Back-EMF Circumstance by Combining the Advance Angle Opened Commutation Method with Current Control Method

    Institute of Scientific and Technical Information of China (English)

    李劲松; 杨晓武; 李干蓉; 饶有祥

    2012-01-01

      从无刷直流电机转矩脉动产生的原理出发,分析了转矩脉动在非理想反电势情况下产生的原因,并提出通过提前角开通换相法与电流控制相结合的控制策略以减少电磁转矩脉动。仿真结果证明该控制策略能有效地控制由非理想反电势引起的无刷直流电机换向产生的电磁转矩脉动。%  Based on the principle of torque ripple produced brushless DC motor,the article analyzes the reasons for torque ripple under non-ideal Back-EMF circumstance,and puts forward the control strategy that combines the advance angle opened commutation method with current controlling to reduce the electromagnetic torque ripple. The simulation results prove that the control strategy can work effectively to control the electromagnetic torque ripple which produced by brushless DC motor under non-ideal Back-EMF circumstance.

  16. Strategy to Suppress Torque Ripple During Commutation of Brushless DC Motor%换相期间无刷直流电机转矩脉动的抑制策略

    Institute of Scientific and Technical Information of China (English)

    李怀兵; 丑武胜; 张延超

    2011-01-01

    Torque ripple was an important factor affecting the performance of brushless DC motor (BLDCM). The commutation torque ripple was analyzed, focusing on the torque ripple caused by non-ideal back EMF and the ascending speed of current in the upcoming phase and descending speed of current in the outgoing phase were not e-qual. The segment control strategy was proposed. The strategy which integrated the advantage of torque direct control and overlapping commutation method could effectively suppress the torque ripple caused by the two factors mentioned above. The simulation experiments showed the difference between the strategy and the two methods using alone, and prove the validity of the segment control strategy suppressing the torque ripple during commutation.%无刷直流电机的转矩脉动是影响其性能的重要因素.针对换相期间的转矩脉动进行了分析,重点研究了非理想反电势、关断相和开通相相电流变化速率不等这两个因素引起的转矩脉动,为了抑制这两个因素引起的转矩脉动,提出了分段控制的策略.该策略集成了转矩直接控制和重叠换相法的优点,可以有效抑制由非理想反电势、关断相和开通相相电流变化速率不等引起的转矩脉动.通过仿真分析验证了该方法和其中两种方法单独应用时的差异,证明了分段控制策略在换相期间抑制转矩脉动的有效性.

  17. Backstepping high order sliding mode control for brushless DC motor speed servo control system%无刷直流电机转速伺服系统反步高阶滑模控制

    Institute of Scientific and Technical Information of China (English)

    张庆超; 马瑞卿

    2016-01-01

    针对无刷直流电机转速伺服系统高性能非线性鲁棒控制,提出一种新型的多滑模反步高阶滑模非线性控制方法。在控制律设计的每一步都引入二阶滑模Super-Twisting算法,无需计算变量导数,消除了滑模抖振,并在第1级子系统虚拟控制律设计中提出一种改进的二阶滑模Super-Twisting算法。与传统双闭环PI控制相比,能够令系统的动静态性能更好,转矩脉动更小,鲁棒性更强;与标准Super-Twisting算法相比,进一步提高了系统对阶跃负载扰动的抑制能力。最后通过仿真分析表明了所提出方法的有效性。%For higher performance speed servo robustness control of brushless DC motor(BLDCM), a novel multiple sliding mode backstepping high order sliding mode nonlinear control approach is proposed. The second order sliding mode Super-Twisting algorithm(STA) ,which needs no derivative of any variables and eliminates the sliding mode chattering, is used in each step design of the whole backstepping control law. And a self-adaption STA(SSTA) is proposed and used in the virtual control law of the first level subsystem. Compared with the traditional dual closed loop PI control, the proposed method makes the system have higher dynamic and static performance, smaller torque ripple and stronger robustness. Compared with the traditional STA, the proposed SSTA can futher improve the system’s robustness for the step load disturbance. Finally, simulation analysis shows the effectiveness of the proposed method.

  18. 基于变系数PID的无刷直流电动机双闭环系统%Brushless DC motor double closed-loop control system based on variable coefficient PID

    Institute of Scientific and Technical Information of China (English)

    郭宏; 吴海洋; 巫佩军

    2012-01-01

    A variable coefficient proportion integration differentiation(PID)algorithm used in the position loop was proposed and analyzed in the control system of electrical dual-redundancy brushless DC torque motor used in the direct drive valve.The steady-state error of the system was eliminated quickly by enhancing the influence of proportion regulator and integrator gradually according to the position deviation.The integration of position error was limited to ensure the system's stability.Experimental results show that the variable coefficient PID algorithm used in the position loop can ensure the system's stability and the accuracy of the position response,whatever the inner loop uses current loop or velocity loop.For the same step response,the step rise time of the double closed loop structure of the position and current reduced more than 32% compared with that of the double closed loop structure of the position and velocity.However,the double closed-loop structure of position/velocity loop performs strong loading appliance and strong robustness.%针对应用于直接驱动阀的电气双余度无刷直流力矩电动机控制系统,提出在位置环采用变系数PID(Proportion Integration Differentiation)控制算法,根据位置偏差改变调节参数,逐步加强比例和积分作用以快速消除系统稳态误差而又不引起系统抖动;为了保证系统的稳定性,对位置偏差的积分项进行了限制.实验结果表明:位置环采用该变系数PID控制算法的双闭环系统能够有效地保证系统的稳定性能和响应精度.同幅值的位置阶跃响应,位置环/电流环双闭环系统的上升时间比位置环/速度环双闭环系统的上升时间减小了32%;位置环/速度环双闭环系统具有优良的负载适应性能,鲁棒性强.

  19. Control analysis of PM brushless DC motor used in flywheel energy storage system%飞轮储能系统永磁无刷直流电机控制方法研究

    Institute of Scientific and Technical Information of China (English)

    程文星; 祝长生

    2012-01-01

    针对某高速飞轮储能系统中的永磁无刷直流电机在宽速范围内运行时出现的电流和转矩脉动问题,开展了换向期间的转矩脉动的分析,建立了转矩脉动和转速之间的关系,提出了在低速区功率开关管采用先脉宽调制后恒通,最后再脉宽调制(PWM-onPWM)的方法,在高速区功率开关管采用了带PWM的重叠换向调制的一种混合调制方法;在抑制换向期间的电流和转矩脉动的效果上对该调制方式进行了评价,并搭建了Matlab/Simulink仿真模型,进行了低速区的运行试验.研究结果表明,该混合控制方案能消除非换向期间非导通相上的续流现象,并可减小换向过程中的电磁转矩脉动,可以使无刷直流电机在相对较宽的速度范围内平稳运行.%Aiming at reducing the current and the torque ripple appeared in flywheel energy storage system running in wide-range speed, after the analysis of torque ripple in the commutation interval, the relation between the torque ripple and the speed was established. A hybrid method was presented that the PWM-on-PWM was chosen to control power devices during low-speed range, while during high-speed range, the overlapping commutation with PWM was used. The control method were evaluated on the effect of reducing the current and the torque ripple during the commutation interval, the Matlab/Simulink model was built, and the running test in low-speed range were tested. Hie experimental results show that the proposed method can eliminate diodes' free-wheeling phenomenon and reduce the torque ripple during the commutation interval, it adapts for brushless DC motor in wide speed-range.

  20. 无刷直流电机与控制模块安规认证%Safety Certificate of Brushless DC Motor and its Control Module

    Institute of Scientific and Technical Information of China (English)

    Flex Wang

    2008-01-01

    @@ 1 串激式电机的应用与特性 串激式电机(Series Motorg)也称作电刷式电机(Conventional Motors),具备高扭力输出的特性,常常运用在毋需精确转速控制的电动工具中,例如手提式电钻、圆盘锯或是台式木工锯床、木工角度切割锯床等.在构造上使用机械式换相器(Commutator),将电源供应给电机转子绕组(Armature).

  1. Approaches to Suppressing Shaft Voltage in Brushless DC Motor Driven by PWM Inverter Based on Ungrounded Common-Mode Equivalent Circuit

    Science.gov (United States)

    Maetani, Tatsuo; Isomura, Yoshinori; Watanabe, Akihiko; Iimori, Kenichi; Morimoto, Shigeo

    This paper describes an ungrounded common-mode equivalent circuit for a motor driven by a voltage-source PWM inverter. When the capacitance of the rotor was is small, the reversal of the polarities of the common-mode voltage and shaft voltage is observed. In order to model this reversal, a bridge-type equivalent circuit is proposed. On the basis of calculations and experiment, it is found the values and polarity of the shaft voltage can be are accurately determined with the proposed equivalent circuit. Furthermore, the capacitance value of the insulated rotor required to make the shaft voltage equal to or less than the dielectric breakdown voltage of the bearing grease is obtained.

  2. Electric Tools Permanent Magnet Brushless DC Motor Hall Sensor Selection%电动工具用永磁无刷直流电机的霍尔传感器选型

    Institute of Scientific and Technical Information of China (English)

    古炯钧; 徐威群

    2014-01-01

    基于不同工艺霍尔传感器的磁特性与电特性,就电动工具用无刷电机的应用特点,介绍所需霍尔传感器的必要参数,提出合理选型建议,以期达到提高电机整体性能与可靠性的目的,为工程师设计电机时选择霍尔传感器提供参考。%Based on the magnetic properties and electrical characteristics of different processes Hall sensor, and on the application characteristics of electric tools brushless motor, introduce the necessary parameters of Hall sensor, put forward reasonable selection suggestions, in order to improve the overall performance and reliability, and to provide a reference for the engineers choosing Hall sensor when designing the motors.

  3. Analysis of brushless DC generator incorporating an axial field coil

    Energy Technology Data Exchange (ETDEWEB)

    Moradi, Hassan, E-mail: H_moradi@sbu.ac.i [Department of Electrical and Computer Engineering, Shahid Beheshti University, GC, Tehran (Iran, Islamic Republic of); Afjei, E. [Department of Electrical and Computer Engineering, Shahid Beheshti University, GC, Tehran (Iran, Islamic Republic of)

    2011-07-15

    Highlights: {yields} Magnetic analysis and experiment of a three-phase field assisted BLDC generator. {yields} Confirm the accuracy of the predicted flux-linkage by 2-D FE analysis. {yields} Confirm the accuracy of the FE analysis results by coupling the FE and BE method. {yields} Control the output voltage to a desired level by control the amplitude of the I{sub f}. {yields} Compatible with any application that requires variable speed operation. -- Abstract: This paper describes the magnetic analysis and experiment of a three-phase field assisted brushless DC (BLDC) generator. Unlike conventional BLDC generators, the permanent magnet is replaced with an assisted field winding. The stator and rotor are constructed with two dependent magnetically sets, in which each stator set includes nine salient poles with coil windings, and the rotor comprises of six salient poles. Other pole combinations also are possible. This construction is similar to a homopolar inductor alternator. The DC current in the assisted field winding produces axial flux which makes the rotor magnetically polarized at its ends. The magnetic field flows axially through the rotor shaft and closes through the stator teeth and the machine housing. To evaluate the generator performance, two types of analysis, namely the numerical technique and the experimental study have been utilized. In the numerical analysis, 2-D finite element (FE) analysis has been carried out using a MagNet CAD package (Infolytica Corporation Ltd.), to confirm the accuracy of the predicted flux-linkage characteristics, whereas in the experimental study, a prototype BLDC generator was constructed for verifying the actual performance. Furthermore, the evaluation method based on a hybrid numerical method coupling the finite element (FE) analysis and boundary element (BE) method, has been carried out to confirm the accuracy of the 2-D FE analysis simulation results. It provides not only confirmations of the investigation in results

  4. Six-step Voltage Control of PM Brushless AC Motors under High Speed Flux-weakening Operation for EV/HEV Applications

    Institute of Scientific and Technical Information of China (English)

    诸自强

    2008-01-01

    The torque-speed characteristics of brushless motor having an interior permanent magnet rotor and a sinusoidalback-emf waveform are compared experimentally when it is operated in brushless AC (BLAC) mode and brushless DC(BLDC) modes with both 2-phase, 120° conduction (BLDC-120) and 3-phase,180° conduction (BLDC-180).Particularemphasis is on high-speed,six-step voltage controlled,flux-weakening operation.h is shown that for EV/HEV applications,even for interior PM brushless motors which have sinusoidal back-emf waveforms,in order to achieve maximum torque perampere capability over wide operation speed range,it is advantageous to employ a hybrid operation mode-BLAC operationin the constant torque region and six-step voltage control (BLDC-180 operation, together with current phase control) inthe flux-weakening region.

  5. Magnetic Signature of Brushless Electric Motors

    Science.gov (United States)

    2006-04-01

    speed and rotational position of the motors. A plastic BMX wheel was modified with the addition of three fins to allow the motors to be tested under...Jim McBeath from DSTO oversaw the construction of this facility. Mick Durdin of the Maritime Platforms Division modified the BMX wheel for use with

  6. Energy-Regenerative Braking Control of Electric Vehicles Using Three-Phase Brushless Direct-Current Motors

    OpenAIRE

    Bo Long; Shin Teak Lim; Ji Hyoung Ryu; Kil To Chong

    2013-01-01

    Regenerative braking provides an effective way of extending the driving range of battery powered electric vehicles (EVs). This paper analyzes the equivalent power circuit and operation principles of an EV using regenerative braking control technology. During the braking period, the switching sequence of the power converter is controlled to inverse the output torque of the three-phase brushless direct-current (DC) motor, so that the braking energy can be returned to the battery. Compared with ...

  7. Optimization of brushless direct current motor design using an intelligent technique.

    Science.gov (United States)

    Shabanian, Alireza; Tousiwas, Armin Amini Poustchi; Pourmandi, Massoud; Khormali, Aminollah; Ataei, Abdolhay

    2015-07-01

    This paper presents a method for the optimal design of a slotless permanent magnet brushless DC (BLDC) motor with surface mounted magnets using an improved bee algorithm (IBA). The characteristics of the motor are expressed as functions of motor geometries. The objective function is a combination of losses, volume and cost to be minimized simultaneously. This method is based on the capability of swarm-based algorithms in finding the optimal solution. One sample case is used to illustrate the performance of the design approach and optimization technique. The IBA has a better performance and speed of convergence compared with bee algorithm (BA). Simulation results show that the proposed method has a very high/efficient performance.

  8. An ironless armature brushless torque motor

    Science.gov (United States)

    Studer, P. A.

    1973-01-01

    A high torque motor with improved servo mechanism is reported. Armature windings are cast into an epoxy cylinder and armature conductors are integrally cast with an aluminum mounting ring which provides thermal conductance directly into the structure. This configuration eliminates magnetic hysteresis because there is no relative motion between the rotating magnetic field and any stationary iron. The absence of destabilization forces provides a fast electrical response compared with a typical torquer of conventional construction.

  9. Simulation Research of Dual-Rotor Permanent Magnetic Brushless DC Motor by Variable Parameter PI Controlling%变参数PI控制双转永磁无刷直流电动机仿真研究

    Institute of Scientific and Technical Information of China (English)

    孙百军; 焦振宏; 丁宇汉

    2011-01-01

    双转永磁无刷直流电动机作为螺旋桨推进电机,广泛应用于无人水下航行器.基于双转永磁无刷直流电动机工作原理,建立电机数学模型,采用变参数PI控制算法设计控制器,给出相对位置检测的换相控制方案,在Matlab平台上,建立电机调速系统仿真模型.仿真结果表明,仿真建模准确,控制算法精确、稳定、可靠.%The dual-rotor permanent magnetic brushless direct current motor (dual-rotor PMBLDCM) which has two rotors running in opposite direction at any time is widely used in autonomous underwater vehicle as the driving motor of propeller. Based on the working principle, this paper built the mathematical model of dual-rotor PMBLDCM, designed controller adopting variable parameter PI control algorithm,gave a phase-change control scheme employing relative position detection and built the simulation model of the speed regulation system of dual-rotor PMBLDCM under Matlab platform. The simulation result proves that the simulation modeling and algorithm of controlling are accurate, stable and reliable.

  10. The Design and Implementation of Brushless DC Motor Drive and Control Circuit%无刷直流电动机驱动控制电路的设计和实现

    Institute of Scientific and Technical Information of China (English)

    宰文姣

    2013-01-01

    设计了一种基于单片机的直流无刷电机驱动控制系统.以STC89C52为控制芯片,IR2130为前级驱动芯片,通过分立元件MOS管搭建三相逆变桥进行功率放大.为了实现闭环控制,安装光电编码盘进行实时测量电机转速,通过PID控制算法改善系统的稳定性.实验结果表明:该驱动及控制电路功耗小,电机运行平稳,噪声小,转矩波动小,效率高.%A brushless direct current motor ( BLDCM) drive control system based on single chip was designed. STC89C52 was taken as control chip,and IR2130 was taken as the pre-drive chip. A three-phase inverter bridge power amplifier was built with discrete components MOS transistors. In order to achieve closed-loop control of BLDCM,the photoelectric encoder disk was installed to measure the real-time speed. The system stability was improved through PID control algorithm. Experimental results show that the power consumption of the drive and control circuit is low,and the motor has smooth operation,low noise,small torque ripple and high efficiency.

  11. Study on Starting Control for Sensorless Three-phase Permanent-magnet Brushless DC Motor%三相永磁无刷电机起动控制研究

    Institute of Scientific and Technical Information of China (English)

    吴强; 熊浩; 孟光伟; 让余奇; 李槐树

    2011-01-01

    本文分析了的120°导通三相逆变器的SVPWM控制特性,提出了基于SVPWM控制和电流调节控制的无位置传感器的三相永磁无刷直流电机(BLDCM)的起动控制方法。在Matlab/Simlink环境下,建立了三相永磁BLDCM起动控制系统的仿真模型并进行了仿真。仿真结果表明该起动控制方法不但能有效控制起动电流大小,而且能改善BLDCM开环起动性能。%The paper analyses the SVPWM control schema of three-phase inverter employing 120° switch-on mode,proposes a starting control method combining the SVPWM control schema with current regulation for a sensorless three-phase permanent-magnet(PM) brushless DC(BLDC) motor,establishes the simulation model of the starting control system in Matlab /Simlink environment,and implements the proposed starting control system through digital simulation.Simulation results verify that the proposed starting method can not only control the starting current effectively but also improve the open-loop starting performance of the BLDC motor.

  12. Experiments with a DC Motor

    Science.gov (United States)

    Kraftmakher, Yaakov

    2010-01-01

    Experiments with an electric motor provide good opportunity to demonstrate some basic laws of electricity and magnetism. The aim of the experiments with a low-power dc motor is to show how the motor approaches its steady rotation and how its torque, mechanical power and efficiency depend on the rotation velocity. The tight relationship between the…

  13. MINITYPE MACHINING SYSTEM FOR DIAMOND LAPPING & POLISHING BY USING BRUSHLESS DIRECT CURRENT MOTOR AS PRECISE SPINDLE

    Institute of Scientific and Technical Information of China (English)

    FU Huinan; CHEN Dongsheng; ZHAO Yong; LIN Binquan

    2008-01-01

    A minitype precise spindle system which can machine precisely and stably in the process of diamond lapping and polishing is designed. In such minitype spindle system, the brushless DC spindle motor is used to drive the lapping finish table, which is built with fluid dynamic bearings. Some measures have been taken to make the lapping system dynamic balance, and a servo controller which can adjust the speed of motor from 1 200 r/min to 5 400 r/min is designed. Experiments show that the spindle system is reliable and stable for diamond polishing, and the detection results by atomic force microscope(AFM) show that the surfaces of diamond edge's Ra is 6.725 nm and whole diamond average Ra is 3.25 nm.

  14. Design of a Permanent Magnet Brushless DC Motor and its Drive Based on Lithium Battery with Short-term Heavy Load%基于锂电池供电短时大负载下永磁无刷直流电机及驱动设计

    Institute of Scientific and Technical Information of China (English)

    侯红胜; 刘卫国; 罗玲

    2015-01-01

    通过分析锂电池输出电压随着能量的输出而下降的规律,根据实际的任务结束后的电压设计电机及驱动电路,通过对其机械特性进行分析可以满足正常情况下的输出要求。当电压低于预期值时,可以对无刷直流电机采用混合驱动的方式提高电机的输出转矩和转速,在混合驱动模式能够实现低电压供电情况下与高电压情况下两两驱动方式相同的输出特性。在电机的设计时,可以适当提高电机的额定电压值,从而减轻电机的体积和重量,更适用于航空航天和户外等对电机体积、重量和短时大负载有特殊要求的场合。仿真和实验表明无刷直流电机的额定电压能够根据锂电池的最低工作电压提高10%以上。%By analyzing the rule that lithium battery output voltage decreases with energy consumption,we design the motor and its drive circuitry with reference to the end voltage of the mission.By analyzing its mechanical characters,we can meet the output requirements under normal conditions.When the voltage lies under its expected value,we can use combination drive to raise the output torque and rotational speed of the brushless DC motor.In the combination drive mode,we can achieve the same output characteristics under the low and high-voltage supply.The motor can be designed with a properly raised rated voltage value so as to reduce the volume and weight of the motor and adapt it to aerospace and other outdoor applications where there are special requirements on the volume, weight and short-term heavy load of the motor.Simulation and experiments show that the rated voltage of the brushless DC motor can be raised by more than 10% against the lowest working voltage of the lithium battery.

  15. Sliding Mode Observer for a Position Sensorless Control System of High-Speed Brushless DC Motor%高速BLDCM无位置传感器滑模观测器控制

    Institute of Scientific and Technical Information of China (English)

    周朋; 王志强; 朱庄生

    2011-01-01

    研究了基于滑模观测器来实现无刷直流电动机的无位置传感器控制的理论方法,由滑模观测器观测电机的反电动势信息,然后估算出电机的转速以及换相信号,由转速估算值和测得的母线电流控制Buck电路占空比构成双闭环调节.同时通过趋近律和低通滤波器削弱了滑模抖振对系统的影响.最后利用MATLAB/Simulink对该控制方法进行仿真研究,仿真结果表明该系统设计合理,并具有一定的鲁棒性.%A sliding Mode observer of the trapezoidal back EMF was proposed to realize the control of high-speed brushless direct current motor(BLDCM) with no position sensor. The trapezoidal back EMF was used to estimate the speed and the commutation points of the BLDCM, A double closed loop was composed by estimating the speed and current of gen-eratris to adjust the system. The low pass filter and reaching law method are used for chatting reduction of sliding mode. This control method was validated by MATLAB/Simulink. Simulation results show that this system is designed reasonable and robustness.

  16. Prospects for Brushless ac Motors with HTS Rotors

    Science.gov (United States)

    McCulloch, M. D.; Jim, K.; Kawai, Y.; Dew-Hughes, D.; Morgan, C.; Goringe, M. J.; Grovenor, C. R. M.

    1997-03-01

    There is a superconducting equivalent for every type of brushless ac motor; permanent magnet, reluctance, hysteresis and induction (squirrel cage) motor. The particular advantage of superconducting versions of these machines is that they are expected to provide much higher power densities than their conventional equivalents. The behaviour of superconducting rotors fabricated in the form of (a) squirrell cages from silver coated with melt-processed Bi-2212, (b) tubes cast centifugally from Bi-2212, and (c) small cylinders of melt-processed and seeded YBCO has been studied in rotating magnetic fields provided by conventional motor coils. Measurements of static torque, and values of dynamic torque deduced from angular velocity and acceleration have been used to characterise the potential performance of these embryonic machines. Two broad types of behaviour have been observed. In the Bi-2212 rotors the torque decreases with increasing rotor speed; this behaviour is believed due to flux creep. By contrast the strong-pinning YBCO rotors maintain a constant torque up to synchronous speed. Mathematical modelling of flux penetration and distribution within the rotors is able to reproduce both types of the observed behaviour. Power densities some 5 to 10 times that of conventional machines are predicted to be achievable in optimised prototype machines.

  17. Model Free Predictive Control Method to Suppress Commutation Torque Ripple for Brushless DC Motor%基于无模型预测控制的无刷直流电机换相转矩波动抑制策略

    Institute of Scientific and Technical Information of China (English)

    史婷娜; 李聪; 姜国凯; 夏长亮

    2016-01-01

    The torque ripple of brushless DC motor( BLDCM ) generated in the commutation process seriously affects their applications in the precision servo system. This paper presents a model free predictive control method,which combines the universal model and the predictive control,to suppress the commutation torque ripple of the BLDCM. In this paper, the expression of the universal model of the brushless DC motor control system is derived. By taking the universal model as the predictive model to select the optimal switch state through the value function,the non-commutation phase current can be kept constant. The experimental results show that the proposed method can effectively suppress the commutation torque ripple of the BLDCM in both low and high speeds under the rated speed. Since parameters of electric machines are not necessary in the proposed control process,the algorithm is simple and easy to realize.%无刷直流电机工作时产生的换相转矩波动严重影响着其在高精度伺服系统中的应用。本文将无模型控制中的泛模型思想与预测控制相结合,提出一种无模型预测控制方法来抑制无刷直流电机换相时的转矩波动。通过推导无刷直流电机控制系统的泛模型的表达式,将泛模型作为预测模型,通过价值函数选择最优的开关状态,保持非换相相电流值恒定。实验结果证明,该方法能有效抑制电机在额定转速以下的高、低速情况下的换相转矩波动,控制过程中不需要精确的电机参数,算法简单,易于实现。

  18. Analysis and Compensation of Commutated Current Freewheeling for Sensorless Brushless DC Motor Under Heavy-load Condition%重载条件下无刷直流电机无位置传感器驱动换相续流影响的分析及其补偿

    Institute of Scientific and Technical Information of China (English)

    杨明; 刘杰; 徐殿国

    2013-01-01

    At the communication moment of brushless DC motor (BLDCM), the terminal voltage is distorted by diode freewheeling current from which phase current will be turn off. Taking the back-EMF zero-cross detection method in sensorless position control, this terminal voltage distortion can make position detection signal phase ahead, deviating from the best commutation time, especially, in heavy-load condition it can cause commutation failure. Therefore back-EMF zero-cross detection method has been restricted in light-power application. The mechanism of freewheeling current causes advance signal has been analyzed in this paper, and based mathematical model, a position detection signal phase ahead compensation method is presented too. Simulation and experimental results show that the compensated signal is close to the best commutation time, BLDC motor can still be normal operation by sensorless control with heavy-load.%无刷直流电机(brushless DC motor,BLDCM)换相时刻关断相电流的续流造成电机端电压的畸变。当采用无位置传感器反电动势过零检测法时,端电压波形畸变会使位置检测信号相位超前,偏离最佳换相时刻,重载条件下甚至会造成换相失败,制约了反电动势检测法的电机功率应用范围。因此,该文针对电流续流影响端电压的机理加以分析,建立了电流续流产生相位超前的数学模型,并给出了位置检测信号相位超前的补偿算法。仿真和实验结果表明,经过补偿后的位置检测接近最佳换相时刻,重载条件下仍可正常运行。

  19. Research on Modeling and Control of Regenerative Braking for Brushless DC Machines Driven Electric Vehicles

    OpenAIRE

    Jian-ping Wen; Chuan-wei Zhang

    2015-01-01

    In order to improve energy utilization rate of battery-powered electric vehicle (EV) using brushless DC machine (BLDCM), the model of braking current generated by regenerative braking and control method are discussed. On the basis of the equivalent circuit of BLDCM during the generative braking period, the mathematic model of braking current is established. By using an extended state observer (ESO) to observe actual braking current and the unknown disturbances of regenerative braking system, ...

  20. Initial Rotor Position Estimation of Half-Wave Rectified Brushless Synchronous Motor

    Science.gov (United States)

    Abe, Takashi; Oyama, Jun; Higuchi, Tsuyoshi

    This paper presents an initial rotor position estimation of Half-Wave Rectified Brushless Synchronous Motor. In the previous paper, we proposed this motor as AC servo motor, which is based on the half-wave rectified brushless excitation principle. The basic principle of this estimation technique utilizes the dependence of inductance on the rotor position. The bias frequency component of half-Wave rectified brushless excitation is used to estimate the rotor position error. The magnetic pole is discriminated by the switching condition of the diode inserted into the rotor field winding. This estimation technique is confirmed by simulation include inverter circuit, control program and motor model. Finally, the effectiveness of the proposed estimation technique has been verified by experiments.

  1. Performance Enhancement of PID Controllers by Modern Optimization Techniques for Speed Control of PMBL DC Motor

    Directory of Open Access Journals (Sweden)

    M. Antony Freeda Rani

    2015-08-01

    Full Text Available Permanent Magnet Brushless DC motor (PMBL DC is used in a large number of industrial and automotive applications because of their high efficiency, compactness and excellent reliability. However to design an efficient PMBL DC motor, it is necessary to provide an effective controller that has to reduce the overshoot, settling and rise time. In this study, an improved PID controller has been designed by optimizing the parameters of PID controller based on two advanced optimization techniques ANFIS and Cuckoo Search optimization for speed control of a PMBL DC motor. The proposed approach has superior features, including easy implementation, stable convergence characteristic and good computational efficiency. The PMBL DC motor is modeled in SIMULINK implementing the algorithms in MATLAB and the performance evaluation has been studied.

  2. 基于准Z源网络的永磁无刷直流电机换相转矩脉动抑制方法%Researches on the Method of Suppressing Commutation Torque Ripple for Brushless DC Motors Based on a Quasi-Z-Source Net

    Institute of Scientific and Technical Information of China (English)

    夏鲲; 朱琳玲; 曾彦能; 徐鑫悦; 杨益华

    2015-01-01

    Focusing on popular existed high commutation torque ripple of square waves driving brushless DC motors, this paper presented a new method of suppressing commutation torque ripple for brushless DC motors based on a Quasi-Z-Source net. The Quasi-Z-Source net was employed at the front of the three-phase bridge. The control strategy was to adjust the DC link voltage of the motor controller via the Quasi-Z-Source net to keep the incoming and outgoing phase currents changing at the same rate during commutation, hence to effectively suppress commutation torque ripple. The cause of commutation ripple was analyzed. A novel circuit topology and a control algorithm of suppressing commutation torque ripple employed a Quasi-Z-Source net before the inverter was introduced in detail. Finally, simulation and experimental results show that, the proposed method can effectively minimizing commutation torque ripple. Torque ripple can be reduced to below 4.6% of the average torque by using appropriate circuit parameters in a simulation mode. And torque ripple can also be reduced to below 12% of the average torque via experimentation in real situation.%针对方波驱动的无刷直流电机普遍存在的换相转矩脉动较大的问题,提出了一种基于准 Z 源网络抑制永磁无刷直流电机换相转矩脉动的方法。在三相桥臂前级增加准 Z源网络,换相期间由准 Z 源网络调整直流母线电压,使电机关断相电流下降速率与开通相电流上升速率相等,从而有效抑制换相转矩脉动。分析了换相转矩脉动产生的原因,详细介绍了通过增加前级功率变换电路抑制换相转矩脉动的电路拓扑与控制算法。仿真及实验结果表明,该方法能够有效抑制永磁无刷直流电机换相转矩脉动,如采用合适的电路参数,仿真模型中转矩脉动可减少到平均转矩的4.6%以下,实际设计的系统实验可将转矩脉动抑制在平均转矩的12%以下。

  3. Research on Modeling and Control of Regenerative Braking for Brushless DC Machines Driven Electric Vehicles

    Directory of Open Access Journals (Sweden)

    Jian-ping Wen

    2015-01-01

    Full Text Available In order to improve energy utilization rate of battery-powered electric vehicle (EV using brushless DC machine (BLDCM, the model of braking current generated by regenerative braking and control method are discussed. On the basis of the equivalent circuit of BLDCM during the generative braking period, the mathematic model of braking current is established. By using an extended state observer (ESO to observe actual braking current and the unknown disturbances of regenerative braking system, the autodisturbances rejection controller (ADRC for controlling the braking current is developed. Experimental results show that the proposed method gives better recovery efficiency and is robust to disturbances.

  4. Prediction of Torque Pulsations in Brushless Permanent-Magnet Motors Using Improved Analytical Technique

    Science.gov (United States)

    Kiyoumarsi, Arash

    2010-01-01

    Torque pulsations have prominent effects on the performance of brushless permanent- magnet (PM) machines. There are different sources of torque ripples in PM motors. These torque pulsations depend on the shape of the flux density distribution in the airgap region. For predicting the open-circuit airgap field distribution in brushless PM motors, a two dimensional (2-D) analytical method, in which the direction of magnetization, either radial or parallel and the effect of the stator slot-openings are taken into account, is used. The method uses an improved 2-D permeance model. In order to evaluate the accuracy of this method, a 2-D time-stepping FEM coupled with the two motion equations is used. A 3-phase, 36-slot, 4-pole, 5 HP, brushless PM motor is modeled by two methods. In this analysis both, the radial and parallel magnetization of the brushless motor are considered. The results obtained by the analytical method are compared with those obtained by FE analysis that shows the valuable accuracy of the analytical method for performance calculations in design and optimization processes.

  5. Method and apparatus for sensorless operation of brushless permanent magnet motors

    Science.gov (United States)

    Sriram, Tillasthanam V.

    1998-01-01

    A sensorless method and apparatus for providing commutation timing signals for a brushless permanent magnet motor extracts the third harmonic back-emf of a three-phase stator winding and independently cyclically integrates the positive and negative half-cycles thereof and compares the results to a reference level associated with a desired commutation angle.

  6. Rotor position sensing in brushless ac motors with self-shielding magnets using linear Hall sensors

    Science.gov (United States)

    Zhu, Z. Q.; Shi, Y. F.; Howe, D.

    2006-04-01

    This paper investigates the use of low cost linear Hall sensors for rotor position sensing in brushless ac motors equipped with self-shielding magnets, addresses practical issues, such as the influence of magnetic and mechanical tolerances, temperature variations, and the armature reaction field, and describes the performance which is achieved.

  7. Research onModel and Control System of Brushless DC Motor Based on PSO-BP Neural Network%基于 PSO-BP 神经网络的无刷直流电机模型及控制系统研究

    Institute of Scientific and Technical Information of China (English)

    程声烽; 程小华; 杨露

    2014-01-01

    For the non-linear distribution characteristic of air gap flux density of brushless DC motor , using particle swarm optimization back propagation neural network to approximate the flux density waveform in or -der to establish a more precise BLDCM model .A double-loop control system was designed based on this model: speed loop used the single neuron PID control , through improved Hebb learning rule to adjust the weights in order to realize the self-adaptation of three PID parameters; current loop used the hysteresis cur-rent control to realize the current regulation .The simulation model based on Matlab/Simulink was built , and the results verified the correctness of the model.%针对无刷直流电机( BLDCM)气隙磁密非线性分布的特性,利用粒子群优化的反向传播( PSO-BP)神经网络对气隙磁密波形进行逼近,从而建立较为精确的BLDCM模型。在此模型基础上设计了一种双闭环控制系统:转速环采用单神经元PID控制,通过改进的Hebb学习规则调整权值,以实现PID三个参数的自适应;电流环采用滞环电流控制,以实现电流调节。在Matlab/Simulink中搭建仿真模型,仿真结果验证了该模型的正确性。

  8. Fuel pump with brushless motor for high vibration applications; Kraftstoffpumpe mit buerstenlosen Motor fuer Anwendungen mit starken Vibrationen

    Energy Technology Data Exchange (ETDEWEB)

    Muenchow, Frank [Federal-Mogul, Bad Camberg (Germany). Geschaeftsbereich Vehicle Safety and Protection; Harvey, Richard; Richards, Michael [Federal-Mogul Corporation, Logansport, IN (United States). Business Unit Vehicle Safety and Protection

    2012-03-15

    Electrifying components in commercial vehicles can be a challenge. High vibration levels, for instance, amplify carbon brush and commutator erosion in a conventional electric motor. To offer a solution Federal-Mogul has developed the brushless fuel pump. This BLDC pump has successfully passed 10,000 h of operation in B100 fuel. (orig.)

  9. 基于Ansoft 仿真及DOE对永磁直流无刷电机的电磁设计%Based on Ansoft simulation and DOE electromagnetic design of permanent magnet brushless dc motor

    Institute of Scientific and Technical Information of China (English)

    陈世添

    2014-01-01

    文章利用Ansoft软件建立了电机磁场有限元分析模型,对磁场分布和电枢反应进行了分析,调整电机设计参数,对电机的高密度性能进行理论分析,给出电机仿真结果。%This paper motor magnetic field finite element analysis model was built by using Ansoft software, ana-lyzes the distribution of magnetic field and armature reaction, adjust the motor design parameters, theoretical analysis was carried out on the high performance of the motor, motor, the simulation results are presented.

  10. Research on intelligent algorithms DC brushless speed control system cutting machine%应用于裁断机中无刷直流电机调速系统的智能算法研究

    Institute of Scientific and Technical Information of China (English)

    王法龙; 郑明辉

    2015-01-01

    针对常规PI在无刷电机调速中控制精度低及动态性能差,无法满足裁断机对动力辊电机速度控制要求,本文提出了一种自适应模糊PI控制方法。该方法应用于无刷直流电机双闭环控制的速度外环控制,提高了无刷直流电机的控制精度和动态响应性能。通过Matlab进行仿真,仿真结果表明,采用自适应模糊PI控制相对常规PI控制,无刷直流电机的调速系统具有很好的动态和静态性能,快速响应,超调量小,抗干扰能力强,鲁棒性好。%In the conventional PI control of brushless motor speed low precision and dynamic performance is poor, unable to meet the power roller cutting machine for motor speed control requirements, we propose an adaptive fuzzy PI control method. The method is applied to double-loop control of brushless DC motor speed outer control, improved control accuracy and dynamic response performance brushless DC motor. Through Matlab simulation results show that the adaptive fuzzy PI speed control system to control relative to conventional PI control, brushless DC motor has a good dynamic and static performance, fast response, small overshoot, and strong anti-jamming capability, robustness.

  11. Simulation based efficiency prediction of a Brushless DC drive applied in ventricular assist devices.

    Science.gov (United States)

    Pohlmann, André; Hameyer, Kay

    2012-01-01

    Ventricular Assist Devices (VADs) are mechanical blood pumps that support the human heart in order to maintain a sufficient perfusion of the human body and its organs. During VAD operation blood damage caused by hemolysis, thrombogenecity and denaturation has to be avoided. One key parameter causing the blood's denaturation is its temperature which must not exceed 42 °C. As a temperature rise can be directly linked to the losses occuring in the drive system, this paper introduces an efficiency prediction chain for Brushless DC (BLDC) drives which are applied in various VAD systems. The presented chain is applied to various core materials and operation ranges, providing a general overview on the loss dependencies.

  12. A novel left ventricular assist device with impeller pump and brushless motor compacted in one unit

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The impeller pump we developed has assisted the circulation of calves for two months, but further improvements to solve the problems of bearing wear and thrombosis along the bearing are desirable. Thus we have designed a new left ventricular assist device (LVAD) with impeller pump and brushless motor compacted in one unit, for which a ceramic bearing and a purge system through the bearing have been devised. The first experiments indicate that this new device could prospectively work for more than one year.

  13. Data Modeling Method of DC Brushless Fan Based on PSpice%基于PSpice的直流无刷风扇数据建模方法

    Institute of Scientific and Technical Information of China (English)

    熊川; 覃远年

    2012-01-01

    由于直流无刷风扇采用的电机不同,其电气特性也存在差异,PSpice仿真软件中很难找到合适的PSpice模型,设计者将经常进行创建或修改模型的操作,而传统建模的方法过程烦琐,工作量大且不易掌握。提出一种根据直流无刷风扇的实际工作参数,快速创建PSpice模型的新方法,通过此方法能快捷建立较高精度的仿真模型,有效解决PSpice仿真模型库缺失的问题。%Due to the electrical characteristics of the are various, it is difficult to find the appropriate PSpiee software. The designers should be establish or revise model paper proposes a new method for establishing the which according established easily model storehouse. DC brushless fans with different motors models for them in PSpice simulation s, which is a complicated process. This PSpice model of DC brushless fan quickly, to the real work parameters. The simulation model with high precision could be by this method, and it provides a way to solve the problem of shortage in PSpice

  14. Analytical Calculation for Air Gap Flux Density of Multi-Pole Permanent Magnetic Brushless DC Motor%多极永磁无刷直流电动机瓦形磁钢气隙磁通密度的解析计算

    Institute of Scientific and Technical Information of China (English)

    孟光伟; 李槐树

    2011-01-01

    利用永磁体的等效面电流法,求得多极平行充磁内外圆弧不同圆心不同半径瓦形永磁体在电机定子内表面产生的径向磁通密度的解析计算公式。通过对一台多相无刷直流电动机的解析计算结果与反电动势的实测值比较,验证了电磁场解析计算公式的有效性和正确性。推导给出的内外圆弧不同半径、不同圆心平行充磁瓦形磁钢产生气隙磁场的解析计算公式,解决了平行充磁瓦形磁钢难以获取平顶反电势波形的问题,提高了解析法计算永磁电机气隙磁场和参数的精度,为多极式无刷直流电动机优化设计及性能分析奠定了理论基础。%In this paper,based on equivalent surface current method,analytical formulas for air gap radial flux density of multi-pole brushless DC motor(BLDCM) in stator inner surface is obtained,when magnetic tile model magnetized in parallel is different centers and different radii.By means of comparison of the detecting back EMF waveform of the multi-phase prototype motor,the analytical formula is effective and accurate.The analytical formula of air gap flux density generated by permanent magnet whose shape is different radii and centres is deduced,solving the problem that flat-roofed back EMF waveform is difficult to obtain by magnetic tile model magnetized in parallel,improving the precision of air gap flux density and parameter calculation.All these provide important theory basis for accurately designing and analysing about multi-pole BLDCM.

  15. Design considerations of electromagnetic force in a direct drive permanent magnet brushless motor

    Science.gov (United States)

    Chen, H. S.; Tsai, M. C.

    2008-04-01

    In this paper, a numerical study of electromagnetic force associated with the width of stator teeth, width of rotor back iron, and slot opening for a ten-pole nine-slot direct drive permanent magnet brushless motor is presented. The study calculates the amplitude of the electromagnetic force on the rotating rotor by using the finite-element method. The results show that the amplitude of electromagnetic force, which may cause the noise and vibration of motors, changes with the variation of these above mentioned three factors. The relationship between the considerations of output torque and the minimization of noise and vibration is also established in this paper.

  16. Analisa Perbandingan Efisiensi Motor Dc Kompon Pendek Dengan Motor Dc Kompon Panjang Akibat Penambahan Kutub

    OpenAIRE

    Sitompul, Fuad Rahim

    2015-01-01

    Motor listrik merupakan perangkat elekromagnetis yang mengubah energi listrik menjadi energi mekanik. Motor DC memerlukan tegangan searah pada kumparan medan untuk diubah menjadi energi mekanik. Energi mekanik ini digunakan sebagai penggerak peralatan listrik seperti pompa,penggerak kipas angin, lift dan lain-lain. Karena penggunaannya yang cukup luas maka kinerjanya harus baik. Kinerja suatu motor DC dikatakan baik jika efisiensi motor tersebut tinggi. Hal itu dapat dicapai dengan mengatur b...

  17. Analysis of DC output voltage ripple in an electromagnetic doubly salient brushless DC generator

    Institute of Scientific and Technical Information of China (English)

    WANG Li; YAN Yangguang; CAO Xiaoqing; MENG Xiaoli

    2007-01-01

    Considering the salient pole and high magnetic nonlinearity of the electromagnetic doubly salient (EMDS)DC generator,a 12/8 pole prototype EMDS generator is designed and calculated using a 2-D finite element method (FEM).The phenomenon is analyzed and that the phase voltage wave changes between 120°and 180°.The influence of the exciting current and armature reaction on the DC voltage ripple of the generator is discussed in detail.and the nonlinear rules are gained that DC voltage rippie changes accordingly.The theoretical analysis is verified by the simulation and expefimental results.The results are helpful for the optimal design of the generator and the optimal control of excitingwinding.We conelude mat the filter-capacitance of the rectifier can be designed.

  18. Gravity Compensation Technique Uses Small dc Motor

    Science.gov (United States)

    Hollow, Richard

    1988-01-01

    Small dc servomotor powered by simple constant-current source and with suitable gearing used to cancel effect of gravity upon load. Lead-screw positioning system has load counterbalanced by small supplementary motor powered by constant current source. Motor lighter and more compact alternative to counterbalance. Used in variety of mechanical systems where load positioned or accelerated in vertical plane.

  19. Three phase full wave dc motor decoder

    Science.gov (United States)

    Studer, P. A. (Inventor)

    1977-01-01

    A three phase decoder for dc motors is disclosed which employs an extremely simple six transistor circuit to derive six properly phased output signals for fullwave operation of dc motors. Six decoding transistors are coupled at their base-emitter junctions across a resistor network arranged in a delta configuration. Each point of the delta configuration is coupled to one of three position sensors which sense the rotational position of the motor. A second embodiment of the invention is disclosed in which photo-optical isolators are used in place of the decoding transistors.

  20. Circuit Regulates Speed Of dc Motor

    Science.gov (United States)

    Weaver, Charles; Padden, Robin; Brown, Floyd A., Jr.

    1990-01-01

    Driving circuit regulates speed of small dc permanent-magnet motor in tape recorder. Two nested feedback loops maintain speed within 1 percent of constant value. Inner loop provides coarse regulation, while outer loop removes most of variation in speed that remains in the presence of regulation by the inner loop. Compares speed of motor with commanded speed and adjusts current supplied to motor accordingly.

  1. Projeto e desenvolvimento de um controlador de motores "brushless" (BLDC) para aplicação em volantes e rodas de inércia

    OpenAIRE

    Fernando de Almeida Martins

    2014-01-01

    Este trabalho apresenta o projeto e o desenvolvimento de uma eletrônica para controle de motores de corrente contínua sem escovas (\\emph{Brushless DC Motor }- BLDC). A aplicação visada é o emprego deste controlador em rodas de reação para sistemas de controle de atitude de satélites. O principal objetivo e o foco da aplicação foi o desenvolvimento e construção de vários métodos para acionar o motor e medir os parâmetros de desempenho. A placa projetada criou uma plataforma adequada para o est...

  2. Permanent magnet synchronous and brushless DC motor drives

    CERN Document Server

    Ramu, Krishnan

    2009-01-01

    Presents an introduction to machines, power devices, inverters, and control. This book covers pm synchronous machines, including modeling, implementation, control strategies, flux weakening operations, parameter sensitivity, sensorless control, and intelligent control applications.

  3. A Novel Current Sensor Technique for Brushless DC Motor Drives

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    1 Introduction Itiswellknownthatthetorquedevelopedbyapermanentmagnetbrushlessdcmotorisproportionaltothemagnitudeofmotorphasecurrents.ThislinearrelationshipmakesitconvenienttocontrolBLDCMtorqueproductionbyregulatingthemotorphasecurrents[1].Inthispaper,theinstantaneoustorquereferstotherealtorqueproducedatanytimeinstant,whereasthestatictorquereferstothetorqueproducedwhenonlytwoofthethreephasewindingscarrycurrents[2,3]. Instantaneoustorquecontrolstrategiesareusuallyimplementedonsuchservoapplicationsthatareexpec...

  4. Energy-Regenerative Braking Control of Electric Vehicles Using Three-Phase Brushless Direct-Current Motors

    Directory of Open Access Journals (Sweden)

    Bo Long

    2013-12-01

    Full Text Available Regenerative braking provides an effective way of extending the driving range of battery powered electric vehicles (EVs. This paper analyzes the equivalent power circuit and operation principles of an EV using regenerative braking control technology. During the braking period, the switching sequence of the power converter is controlled to inverse the output torque of the three-phase brushless direct-current (DC motor, so that the braking energy can be returned to the battery. Compared with the presented methods, this technology can achieve several goals: energy recovery, electric braking, ultra-quiet braking and extending the driving range. Merits and drawbacks of different braking control strategy are further elaborated. State-space model of the EVs under energy-regenerative braking operation is established, considering that parameter variations are unavoidable due to temperature change, measured error, un-modeled dynamics, external disturbance and time-varying system parameters, a sliding mode robust controller (SMRC is designed and implemented. Phase current and DC-link voltage are selected as the state variables, respectively. The corresponding control law is also provided. The proposed control scheme is compared with a conventional proportional-integral (PI controller. A laboratory EV for experiment is setup to verify the proposed scheme. Experimental results show that the drive range of EVs can be improved about 17% using the proposed controller with energy-regeneration control.

  5. Design of Portable Garden Mowers Based on a Brushless Motor Control System%基于无刷电机控制系统的便携式园林割草机设计

    Institute of Scientific and Technical Information of China (English)

    段亚东

    2012-01-01

    Based on a thorough study of China's mower technologies,a simple and practical portable garden mower is designed.The mower uses a brushless motor and its technical performance parameters have improved substantially,compared with traditional brush motors.The mower uses the drive chip IR2130 dedicated for brushless DC motors as its control chip and uses power device MOSFET as its switch to realize the control of brushless DC motors.%在深入研究我国割草机技术的基础上,设计了简单实用的园林便携式割草机。该割草机采用无刷电动机,与传统有刷电动机相比,其主要技术性能大幅提升。以无刷直流电动机专用驱动芯片IR2130为控制芯片,以功率器件MOSFET为开关器件,可实现对无刷直流电动机的控制。

  6. DSPIC BASED POWER ASSISTED STEERING USING BRUSHLESS DIRECT CURRENT MOTOR

    Directory of Open Access Journals (Sweden)

    G. R.P. Lakshmi

    2013-01-01

    Full Text Available This study illustrates the Electrically Assisted power Steering (EAS using BLDC motor for a vehicle. Earlier the Electrically Assisted power Steering (EAS was implemented with DSP. This study shows the usage of a dsPIC to control the BLDC motor with an encoder. The BLDC motor here is driven by dsPIC through a three phase inverter system. IRAMS type of inverter is used which is cost efficient and space efficient. The dsPIC supplied with the input of the steering. In its higher capacity the vehicles speed controller acts as the assistance level controller for steering effort. At the lower capacity, the torque controller gives the effort level control. In reality this can be realized as torque sensor and vehicle sensor interfaced in the dsPIC. For actual implementation in the system, a dsPIC-based BLDC motor controller with three-phase inverter module is used with Hall-effect sensor feedback. It is designed in such a way that the driver assistance can be varied at any time without any difficulty.

  7. DC Motor Drive with PFC Rectifier

    Directory of Open Access Journals (Sweden)

    Lascu Mihaela

    2008-05-01

    Full Text Available The goal of this work is to study theperformances of a hybrid controller used to controlDC Motor drive with a single-phase power factorcorrection rectifier. This study is made usingcomputer simulation (Simulink. The first part isdevoted to the control system of the DC Motors. Inthe second part, the design of the hybrid controllerwill be presented. The third part is the design ofthe fast response single-phase boost power factorcorrection rectifier. The last parts are devoted tosimulation and experimental results.

  8. Optimal current waveforms for brushless permanent magnet motors

    Science.gov (United States)

    Moehle, Nicholas; Boyd, Stephen

    2015-07-01

    In this paper, we give energy-optimal current waveforms for a permanent magnet synchronous motor that result in a desired average torque. Our formulation generalises previous work by including a general back-electromotive force (EMF) wave shape, voltage and current limits, an arbitrary phase winding connection, a simple eddy current loss model, and a trade-off between power loss and torque ripple. Determining the optimal current waveforms requires solving a small convex optimisation problem. We show how to use the alternating direction method of multipliers to find the optimal current in milliseconds or hundreds of microseconds, depending on the processor used, which allows the possibility of generating optimal waveforms in real time. This allows us to adapt in real time to changes in the operating requirements or in the model, such as a change in resistance with winding temperature, or even gross changes like the failure of one winding. Suboptimal waveforms are available in tens or hundreds of microseconds, allowing for quick response after abrupt changes in the desired torque. We demonstrate our approach on a simple numerical example, in which we give the optimal waveforms for a motor with a sinusoidal back-EMF, and for a motor with a more complicated, nonsinusoidal waveform, in both the constant-torque region and constant-power region.

  9. DC motor operation controlled from a DC/DC power converter in pulse mode with low duty cycle

    OpenAIRE

    Stefanov, Goce; Kukuseva, Maja; Citkuseva Dimitrovska, Biljana

    2016-01-01

    In this paper pulse mode of operation of DC motor controlled by DC/DC power converter is analyzed. DC motor operation with time intervals in which the motor operates without output load is of interest. In this mode it is possible the motor to restore energy. Also, in the paper are represented calculations for the amount of the restored energy in the pulse mode operation of the motor for different duty cycles.

  10. Numerical modeling of the magnetization of a permanent magnet and its effect on the electromechanical performance of a brushless direct current motor

    Science.gov (United States)

    Jang, G. H.; Chang, J. H.; Lee, Y. B.

    2002-05-01

    This article investigates the electromechanical performance of a brushless dc (BLDC) motor due to the magnetization patterns of a permanent magnet, i.e., rectangular, trapezoidal, and sinusoidal magnetization. A driving circuit equation considering the switching action of the pulse width modulation inverter is coupled with Maxwell's equation to obtain the nonlinear time-stepping finite element equation for the magnetic field analysis. Newton-Euler's equations are used to determine the mechanical motion of a rotor due to electromechanical excitation. The results show that rectangular magnetization results in the low phase current for a specified torque. However, sinusoidal magnetization produces the smallest magnetic force and may result in the sound mechanical operation of a BLDC motor.

  11. Analytical Calculation of the Magnetic Field distribution in a Flux-Modulated Permanent-Magnet Brushless Motor

    DEFF Research Database (Denmark)

    Zhang, Xiaoxu; Liu, Xiao; Chen, Zhe

    2015-01-01

    This paper presents a rapid approach to compute the magnetic field distribution in a flux-modulated permanent-magnet brushless motor. Partial differential equations are used to describe the magnet field behavior in terms of magnetic vector potentials. The whole computational domain is divided int...... magnetic field with those calculated by finite element method....

  12. The Modelling and Characteristic Analysis of Brushless Synchronous Motor with Sinusoidal back EMF

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Il Nam [Dong Seoul College (Korea); Baek, Soo Hyun; Maeng, In Jae; Yoon, Shin Yong; Baek, Soo Hyun [Dongguk University (Korea); Kim, Cherl Jin [Hanlla University (Korea)

    2000-06-01

    This paper presents the mathematical analysis of Brushless Synchronous Motor(BLSM). The dynamic and the steady state characteristics of BLSM are simulated and analyzed : electromagnetic torque, speed, line voltage, and current. We used mathematical modelling to model of BLSM with sinusoidal back EMF, namely the shaft transformation referencing rotor frame from a, b, c three phase frame to d-q two phase frame. Therefore, the BLSM induced a sinusoidal back EMF requires sinusoidal current to produce constant torque like synchronous motor. The experiment result has already similar to compare with simulation result : torque error about 7%, speed error about 5%. The validity of proposed modelling and analysis was confirmed by the experimental result. (author). 11 refs., 14 figs., 1 tab.

  13. Implementing two DC motor speed control strategies

    Directory of Open Access Journals (Sweden)

    José Danilo Rairán Antolines

    2010-05-01

    Full Text Available While linear control techniques for dynamic systems have been widely tested, systems are not linear in practice. This means that controllers must be re-tuned to make them useful in an experimental setup. This article presents the tuning and re-tuning process for two control strategies: a PID and an algorithm based on the choice of overall transfer function controlling a DC permanent magnet motor. The algorithms’ performance is evaluated and some recommendations are made.

  14. Chaos control of the brushless direct current motor using adaptive dynamic surface control based on neural network with the minimum weights

    Science.gov (United States)

    Luo, Shaohua; Wu, Songli; Gao, Ruizhen

    2015-07-01

    This paper investigates chaos control for the brushless DC motor (BLDCM) system by adaptive dynamic surface approach based on neural network with the minimum weights. The BLDCM system contains parameter perturbation, chaotic behavior, and uncertainty. With the help of radial basis function (RBF) neural network to approximate the unknown nonlinear functions, the adaptive law is established to overcome uncertainty of the control gain. By introducing the RBF neural network and adaptive technology into the dynamic surface control design, a robust chaos control scheme is developed. It is proved that the proposed control approach can guarantee that all signals in the closed-loop system are globally uniformly bounded, and the tracking error converges to a small neighborhood of the origin. Simulation results are provided to show that the proposed approach works well in suppressing chaos and parameter perturbation.

  15. Chaos control of the brushless direct current motor using adaptive dynamic surface control based on neural network with the minimum weights

    Energy Technology Data Exchange (ETDEWEB)

    Luo, Shaohua [School of Automation, Chongqing University, Chongqing 400044 (China); Department of Mechanical Engineering, Chongqing Aerospace Polytechnic, Chongqing, 400021 (China); Wu, Songli [Department of Mechanical Engineering, Chongqing Aerospace Polytechnic, Chongqing, 400021 (China); Gao, Ruizhen [School of Automation, Chongqing University, Chongqing 400044 (China)

    2015-07-15

    This paper investigates chaos control for the brushless DC motor (BLDCM) system by adaptive dynamic surface approach based on neural network with the minimum weights. The BLDCM system contains parameter perturbation, chaotic behavior, and uncertainty. With the help of radial basis function (RBF) neural network to approximate the unknown nonlinear functions, the adaptive law is established to overcome uncertainty of the control gain. By introducing the RBF neural network and adaptive technology into the dynamic surface control design, a robust chaos control scheme is developed. It is proved that the proposed control approach can guarantee that all signals in the closed-loop system are globally uniformly bounded, and the tracking error converges to a small neighborhood of the origin. Simulation results are provided to show that the proposed approach works well in suppressing chaos and parameter perturbation.

  16. Speed Control of DC Motor using AC/AC/DC Converter Based on Intelligent Techniques

    Directory of Open Access Journals (Sweden)

    Rakan Kh Antar

    2013-05-01

    Full Text Available    This paper describes the application of ac/ac/dc and ac/dc converters to control the speed of a separately excited DC motor. Artificial neural network and PI controller are trained to select the desired values of firing angles for triggering thyristors of the ac/ac/dc and ac/dc bridge converters in order to control the speed of the dc motor at a desired value with constant and different load torques in order to obtain the best speed response. Simulation results show that the rising time for ac/dc and ac/ac/dc converters at 250rpm are reduced about 79% and 89% respectively, while delay time it reduced about 69% and 64% respectively. Therefore, speed response of the dc motor is more efficient for closed loop system compared with open loop also the response of ac/ac/dc converter is better than ac/dc converter.

  17. Advanced DC Motor Drive for Haptic Devices

    Directory of Open Access Journals (Sweden)

    Miroslav Božić

    2012-06-01

    Full Text Available Haptics covers many different forms of mechanical interaction with human senses by engaging, touch, vibrations and forces/torques, established for the purpose of augmenting the feedback structure during human-machine interaction. A haptic device has mechanical part, moved by actuators from one and human hand or fingers from the other, actuators, drives, sensing elements, as well as algorithms designed to control the interaction between human and machine in positioning and motion control tasks. With such a system, motors can be controlled in a way to simulate various environments, defined by their material and dynamics, for example pushing soft ball uphill. Haptic devices are becoming more popular in medical applications after introduction of modern medical robots with many different extensions for minimally invasive surgery or diagnostics based on palpation. This paper discusses one DC motor driver custom designed for the purpose of designing a haptic device for medical applications.

  18. Metamodels for New Designs of Outer-Rotor Brushless Synchronous Electric Motors

    Science.gov (United States)

    Dirba, J.; Lavrinovicha, L.

    2014-04-01

    The authors consider the possibilities to synthesise metamodels for the analysis and optimisation of brushless synchronous motors. The metamodels are presented for new designs of the outer-rotor permanent magnet synchronous motor and the outer-rotor reluctance motor. The metamodels are synthesised based on the results obtained by the numerical calculations of magnetic field taking into account magnetic saturation. Analysis of the results for the motor magnetic field and tests of the metamodels at the selected and intermediate points shows that these can be synthesised with acceptable accuracy using numerical calculations instead of expensive real experiments. Rakstā ir apskatītas metamodeļu iegūšanas iespējas to izmantošanai bezkontaktu sinhrono dzinēju analīzē un optimizācijā. Ir iegūti metamodeļi sinhronam dzinējam ar pastāvīgajiem magnētiem un reaktīvam dzinējam ar ārējo rotoru. Sintezēto metamodeļu iegūšanai izmantoti elektrisko dzinēju magnētiskā lauka skaitlisko aprēķinu rezultāti, ievērojot magnētiskās ķēdes piesātinājumu. Metamodeļu pārbaude aprēķinu un starppunktos parādīja, ka to iegūšanai dārgo reālo eksperimentu vietā var izmantot magnētiskā lauka aprēķinu rezultātus.

  19. The Research of a novel Method for Brushless Motor Controller based on DSP%基于DSP的新颖无刷直流电机控制器设计

    Institute of Scientific and Technical Information of China (English)

    赵长青; 范蟠果

    2008-01-01

    利用DSP2812设计了一个无位置传感器电机控制系统,该系统利用三相四开关电路对无刷直流电机(Brushless DC Motor,简称BLDCM)进行驱动,采用了新颖的无位置传感器控制方法和脉宽调制(PWM)方法.最后通过分析和试验证明了该系统的可行性.

  20. 直流电机控制方法的Matlab仿真研究%Research on Matlab simulation for DC motor control method

    Institute of Scientific and Technical Information of China (English)

    徐莉

    2016-01-01

    The control method of brushless DC motor is studied deeply. According to the actual physical model of brushless DC motor,the corresponding mathematical model is established,in which the motor is controlled by double closed⁃loop scheme. On the basis of the real working characteristics of the motor,the conventional PID algorithm is replaced by the fuzzy adaptive PID algorithm to establish the speed control model,so the stability and anti⁃interference ability of the brushless DC motor speed control system can be improved. The simulation model of brushless DC motor was established by Matlab/Simulink toolbox. The re⁃search results show that the fuzzy adaptive PID algorithm can make the speed of the brushless DC motor stable,and the speed can recover to the setting speed quickly under load disturbance. The control system has perfect robustness.%针对无刷直流电机的控制方法进行了深入研究。根据无刷直流电机实际物理模型建立相应的数学模型,电机使用双闭环进行控制。根据电机的实际工作特点,使用模糊自适应PID算法替代常规PID算法建立速度控制模型,以提高无刷直流电机速度控制系统的稳定性和抗干扰能力。使用Matlab/Simulink工具箱建立无刷直流电机的仿真模型,研究结果表明,模糊自适应PID算法能够使无刷直流电机的速度更加平稳,在载荷扰动下快速恢复设定速度,使得控制系统具有更好的鲁棒性。

  1. Electric motors for robotics; Moteurs electriques pour la robotique

    Energy Technology Data Exchange (ETDEWEB)

    Maye, P.

    2000-07-01

    This book presents the technology of DC motors, DC brush-less motors and step by step motors as used in robotics. It describes also the speed and positioning servo-systems with their electronic circuits, the overheating problems and the selection criteria for a given electric motor. (J.S.)

  2. Summary of electric vehicle dc motor-controller tests

    Science.gov (United States)

    Mcbrien, E. F.; Tryon, H. B.

    1982-01-01

    The differences in the performance of dc motors are evaluated when operating with chopper type controllers, and when operating on direct current. The interactions between the motor and the controller which cause these differences are investigated. Motor-controlled tests provided some of the data the quantified motor efficiency variations for both ripple free and chopper modes of operation.

  3. Optimization Design and Performance Analysis of a PM Brushless Rotor Claw Pole Motor with FEM

    Directory of Open Access Journals (Sweden)

    Zhenyang Zhang

    2016-07-01

    Full Text Available A new type of permanent magnet (PM brushless claw pole motor (CPM with soft magnetic composite (SMC core is designed and analyzed in this paper. The PMs are mounted on the claw pole surface, and the three-phase stator windings are fed by variable-frequency three-phase AC currents. The advantages of the proposed CPM are that the slip rings on the rotor are cast off and it can achieve the efficiency improvement and higher power density. The effects of the claw-pole structure parameters, the air-gap length, and the PM thinner parameter of the proposed CPM on the output torque are investigated by using three-dimensional time-stepping finite element method (3D TS-FEM. The optimal rotor structure of the proposed CPM is obtained by using the response surface methodology (RSM and the particle swarm optimization (PSO method and the comparison of full-load performances of the proposed CPM with different material cores (SMC and silicon steel is analyzed.

  4. Sensor-less pseudo-sinusoidal drive for a permanent-magnet brushless ac motor

    Science.gov (United States)

    Liu, Li-Hsiang; Chern, Tzuen-Lih; Pan, Ping-Lung; Huang, Tsung-Mou; Tsay, Der-Min; Kuang, Jao-Hwa

    2012-04-01

    The precise rotor-position information is required for a permanent-magnet brushless ac motor (BLACM) drive. In the conventional sinusoidal drive method, either an encoder or a resolver is usually employed. For position sensor-less vector control schemes, the rotor flux estimation and torque components are obtained by complicated coordinate transformations. These computational intensive methods are susceptible to current distortions and parameter variations. To simplify the method complexity, this work presents a sensor-less pseudo-sinusoidal drive scheme with speed control for a three-phase BLACM. Based on the sinusoidal drive scheme, a floating period of each phase current is inserted for back electromotive force detection. The zero-crossing point is determined directly by the proposed scheme, and the rotor magnetic position and rotor speed can be estimated simultaneously. Several experiments for various active angle periods are undertaken. Furthermore, a current feedback control is included to minimize and compensate the torque fluctuation. The experimental results show that the proposed method has a competitive performance compared with the conventional drive manners for BLACM. The proposed scheme is straightforward, bringing the benefits of sensor-less drive and negating the need for coordinate transformations in the operating process.

  5. Wideband impedance measurements of DC motors under dynamic load conditions

    NARCIS (Netherlands)

    Diouf, Fatou; Buesink, Frits; Leferink, Frank; Duval, Fabrice; Bensetti, Mohamed

    2013-01-01

    One of the principal conducted EMI(electromagnetic interferences) sources of low voltage DC (direct current) motors is the commutation occurring during rotation. In this paper the small-signal impedance of low voltage DC motors under different functioning modes, including the dynamic one is studied

  6. Circuit design of DC brushless thruster speed measurement%直流无刷推进器转速测量电路设计

    Institute of Scientific and Technical Information of China (English)

    陈伟; 严卫生; 赵江

    2012-01-01

    Digital pulse noise,which comes from DC brushless thruster outputting,affects the DC brushless thruster speed measurement. This paper puts forward a DC brushless thruster speed measurement circuit design method. The circuit u-ses a voltage follower,photoelectric isolation technology,which can eliminate the digital pulse noise influence on measurement accuracy. And we calculate the propeller speed by using frequency to voltage converter and analog to digital converter. The test results indicate that the method can effectively eliminate the digital pulse noise. The method has a good stability and high speed measurement accuracy. It can well meet the requirements of DC brushless thruster speed measurement.%直流无刷推进器输出的数字脉冲信号存在毛刺干扰,影响对推进器转速的测量.提出一种直流无刷推进器去毛刺转速测量电路的设计方法.该电路采用电压跟随、光电隔离技术,消除数字脉冲毛刺干扰对测量精度的影响;通过F/V变换、A/D转换,由测得电压计算推进器转速.试验结果表明,该电路设计可以有效的去除毛刺干扰.该方法稳定性好、测速精度高,能很好的满足对直流无刷推进器转速测量的要求.

  7. Voice-Based Control of a DC Servo Motor

    Directory of Open Access Journals (Sweden)

    Musaab Hassan

    2012-01-01

    Full Text Available Problem statement: Motors play a very important role in our life and among which is the DC servo motors. The techniques of controlling these DC motors are plenty, among which is sound. In this study, a voce-based technique was implemented to control the speed and the direction of rotation for a DC motor. Approach: A Microcontroller-based electronic control circuit was designed and implemented to achieve this goal. Results: The speed of the motor was controlled, in both directions, using pulse width modulation and a microcontroller was used to generate the right signal to be applied to the motor. Conclusion: The loudness of human voice was successfully divided into different levels where each level drives the motor at different speed."

  8. SPEED CONTROL OF DC MOTOR WITH PIC 16F877

    OpenAIRE

    ÇOLAK, İlhami; Ramazan BAYINDIR

    2005-01-01

    In this study, a PI controlled separately excited direct current (DC) motor speed has been controlled using PIC 16F877 controller. In the PIC 16F877 programming as a PI controller, the speed of the motor is expected to follow the reference speed. Speed of the motor is measured by a tacho generator and then, the voltage applied to the motor is adjusted by a semiconductor power switch using pulse width modulation (PWM) technique. Drive circuit was tested with 0.9 kW DC motor. Experimental resul...

  9. Optimal state feedback control of brushless direct-current motor drive systems based on Lyapunov stability criterion

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    This paper develops a unified methodology for a real-time speed control of brushless direct-current motor drive systems in the presence of measurement noise and load torque disturbance. First, the mathematical model and hardware structure of system is established. Next, an optimal state feed back controller using the Kalman filter state estimation technique is derived.This is followed by an adaptive control algorithm to compensate for the effects of noise and disturbance. Those two algorithms working together can provide a very-high-speed regulation and dynamic response over a wide range of operating conditions.Simulated responses are presented to highlight the effectiveness of the proposed control strategy.

  10. Virtual test system for permanent-magnet DC motor

    Institute of Scientific and Technical Information of China (English)

    崔淑梅; 王悦; 柴凤; 吴红星; 刘宝廷; 程树康

    2003-01-01

    In order to obtain the primary parameters and operating characteristics of a DC motor without directlymeasuring its torque and rational speed, it is proposed to use a PC and a data acquisition card to acquire boththe dynamic and static data of armature current to establish the performance of a DC permanent-magnet motor.The accuracy and validity of this virtual test system proposed were verified by comparing the measurements madewith the system proposed with the measurements made with conventional torque meters. It is concluded from theresults of comparison that from the mathematic model established for the DC permant-magnet motors, both majorparameters and operating characteristics can be directly established for the DC motors without measuring theirtorques and rotational speed, a perfect on-line measurement and test system has been established for the DCpermanent-magnet motors using the theory of virtual test system. The system proposed features shorter test time,higher efficiency and lower cost.

  11. Neural Network Inverse Model Control and Simulation of Brushless Motor%无刷直流电机的神经网络逆控制与仿真

    Institute of Scientific and Technical Information of China (English)

    段希义; 潘玉民

    2015-01-01

    A neural network inverse control method of brushless DC motor is proposed. This method can overcome the motor param⁃eters change and nonlinear. The inverse model realized using BP neural network, and the inverse model and the original series mo⁃tor system constitute a pseudo linear system, and then to speed closed-loop control of PID.The simulation results show that the neu⁃ral network inverse control method has stronger inhibition to the load disturbance, can reduce the speed overshoot and improve the accuracy and dynamic and static performance.%提出了一种无刷直流电机的神经网络的逆控制方法,该方法可以克服电机参数变化和非线性。其中逆模型采用BP神经网络实现,并将该逆模型与原电机系统串联构成伪线性系统,再进行转速PID闭环控制。仿真实验结果表明神经网络逆控制方法对负载扰动有较强抑制作用,可以减小转速超调、提高精度和动静态性能。

  12. Speed Control of Bldc Motor Drive By Using Pid Controllers

    Directory of Open Access Journals (Sweden)

    Y.Narendra Kumar,

    2014-04-01

    Full Text Available This paper mainly deals with the Brushless DC (BLDC motor speed driving systems have sprouted in various small scale and large scale applications like automobile industries, domestic appliances etc. This leads to the development in Brushless DC motor (BLDCM. The usage of BLDC Motor enhances various performance factors ranging from higher efficiency, higher torque in low-speed range, high power density ,low maintenance and less noise than other motors. The BLDC Motor can act as an alternative for traditional motors like induction and switched reluctance motors. In this paper PID controller is implemented with speed feedback loop and it is observe that torque ripples are minimized. Simulation is carried out using MATLAB / SIMULINK. The results show that the performance of BLDC Motor is quite satisfactory for various loading conditions. Brushless DC motor drives are typically employed in speed controlled applications.

  13. DC motor proportional control system for orthotic devices

    Science.gov (United States)

    Blaise, H. T.; Allen, J. R.

    1972-01-01

    Multi-channel proportional control system for operation of dc motors for use with externally-powered orthotic arm braces is described. Components of circuitry and principles of operation are described. Schematic diagram of control circuit is provided.

  14. DC drive system for cine/pulse cameras

    Science.gov (United States)

    Gerlach, R. H.; Sharpsteen, J. T.; Solheim, C. D.; Stoap, L. J.

    1977-01-01

    Camera-drive functions are separated mechanically into two groups which are driven by two separate dc brushless motors. First motor, a 90 deg stepper, drives rotating shutter; second electronically commutated motor drives claw and film transport. Shutter is made of one piece but has two openings for slow and fast exposures.

  15. Hierarchical Velocity Control Based on Differential Flatness for a DC/DC Buck Converter-DC Motor System

    Directory of Open Access Journals (Sweden)

    R. Silva-Ortigoza

    2014-01-01

    Full Text Available This paper presents a hierarchical controller that carries out the angular velocity trajectory tracking task for a DC motor driven by a DC/DC Buck converter. The high level control is related to the DC motor and the low level control is dedicated to the DC/DC Buck converter; both controls are designed via differential flatness. The high level control provides a desired voltage profile for the DC motor to achieve the tracking of a desired angular velocity trajectory. Then, a low level control is designed to ensure that the output voltage of the DC/DC Buck converter tracks the voltage profile imposed by the high level control. In order to experimentally verify the hierarchical controller performance, a DS1104 electronic board from dSPACE and Matlab-Simulink are used. The switched implementation of the hierarchical average controller is accomplished by means of pulse width modulation. Experimental results of the hierarchical controller for the velocity trajectory tracking task show good performance and robustness against the uncertainties associated with different system parameters.

  16. A New Method for Reducing Commutation Torque Ripples in BLDC Motors

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    A new compensation method and an algorithm for compensating for the commutation torque ripples of the trapezoidal EMF brushless DC motor are put forward. Simulation and experimental results show that this method is correct and practical.

  17. Photovoltaic-wind hybrid system for permanent magnet DC motor

    Science.gov (United States)

    Nasir, M. N. M.; Lada, M. Y.; Baharom, M. F.; Jaafar, H. I.; Ramani, A. N.; Sulaima, M. F.

    2015-05-01

    Hybrid system of Photovoltaic (PV) - Wind turbine (WT) generation has more advantages and reliable compared to PV or wind turbine system alone. The aim of this paper is to model and design hybrid system of PV-WT supplying 100W permanent-magnet dc motor. To achieve the objective, both of PV and WT are connected to converter in order to get the same source of DC supply. Then both sources were combined and straightly connected to 100W permanent magnet dc motor. All the works in this paper is only applied in circuit simulator by using Matlab Simulink. The output produced from each converter is expected to be suit to the motor specification. The output produced from each renewable energy system is as expected to be high as it can support the motor if one of them is breakdown

  18. Swarming Speed Control for DC Permanent Magnet Motor Drive via Pulse Width Modulation Technique and DC/DC Converter

    Directory of Open Access Journals (Sweden)

    A.S. Oshaba

    2013-05-01

    Full Text Available This study presents an approach for the speed control of a permanent magnet DC motor drive via Pulse Width Modulation (PWM technique and a DC/DC converter. The Particle Swarm Optimization (PSO technique is used to minimize a time domain objective function and obtain the optimal controller parameters. The performance of the proposed technique has been evaluated using various types of disturbances including load torque variations. Simulation results illustrate clearly the robustness of the controller and validity of the design technique for controlling the speed of permanent magnet motors.

  19. Efficiency Characteristics of Low Power Hybrid Switched Reluctance Motor

    DEFF Research Database (Denmark)

    Jakobsen, Uffe; Ahn, Jin-Woo

    2009-01-01

    Switched reluctance motors (SRM) are usually considered inferior in terms of efficiency as compared to permanent magnet synchronous motors (PMSM) and brushless DC-motors (BLDC), but less costly. This article presents a test of a 70W hybrid switched reluctance motor (HSRM), that archieves a peak e...

  20. Sensored and sensorless speed control methods for brushless doubly fed reluctance motors

    OpenAIRE

    Jovanovic, Milutin

    2009-01-01

    The study considers aspects of scalar V/f control, vector control and direct torque (and flux) control (DTC) of the brushless doubly fed reluctance machine (BDFRM) as a promising cost-effective alternative to the existing technological solutions for applications with restricted variable speed capability such as large pumps and wind turbine generators. Apart from providing a comprehensive literature review and analysis of these control methods, the development and results of experimental verif...

  1. DC Motor Parameter Identification Using Speed Step Responses

    Directory of Open Access Journals (Sweden)

    Wei Wu

    2012-01-01

    Full Text Available Based on the DC motor speed response measurement under a step voltage input, important motor parameters such as the electrical time constant, the mechanical time constant, and the friction can be estimated. A power series expansion of the motor speed response is presented, whose coefficients are related to the motor parameters. These coefficients can be easily computed using existing curve fitting methods. Experimental results are presented to demonstrate the application of this approach. In these experiments, the approach was readily implemented and gave more accurate estimates than conventional methods.

  2. Advanced dc motor controller for battery-powered electric vehicles

    Science.gov (United States)

    Belsterling, C. A.

    1981-01-01

    A motor generation set is connected to run from the dc source and generate a voltage in the traction motor armature circuit that normally opposes the source voltage. The functional feasibility of the concept is demonstrated with tests on a Proof of Principle System. An analog computer simulation is developed, validated with the results of the tests, applied to predict the performance of a full scale Functional Model dc Controller. The results indicate high efficiencies over wide operating ranges and exceptional recovery of regenerated energy. The new machine integrates both motor and generator on a single two bearing shaft. The control strategy produces a controlled bidirectional plus or minus 48 volts dc output from the generator permitting full control of a 96 volt dc traction motor from a 48 volt battery, was designed to control a 20 hp traction motor. The controller weighs 63.5 kg (140 lb.) and has a peak efficiency of 90% in random driving modes and 96% during the SAE J 227a/D driving cycle.

  3. Brushless DC servo drive system design%无刷直流伺服驱动系统设计

    Institute of Scientific and Technical Information of China (English)

    陈玄

    2012-01-01

    This article through to the digital dc servo drive system theory of research on the control strategy of the analysis and application of the system of high response and high precision. Starting from the first permanent magnet dc motor of the mathematical model of dynamic mathematical model is set up, consider all sorts of interference and parameters change, the corresponding control strategy to apply to the motor control, understand the inner structure servo drive, the best control strategy, make the performance of the system to achieve the expected goal. The fuzzy adaptive control system, write PID algorithm and optimized the speed of the stability and precision control. MATLAB software based on the servo system model, and the simulation PID algorithm of the motor speed control%本文通过对全数字直流伺服驱动系统的理论研究,进行控制策略的分析与应用,实现系统的高响应和高精度。首先从永磁直流电机的数学模型出发,建立动态数学模型,考虑各种干扰及参数变化,把相应的控制策略运用到电机控制,了解伺服驱动的内在结构,研究最佳控制策略,使系统的性能达到预期目标。研究模糊自适应控制系统,编写了PID改进算法,优化了对转速的稳定、精确控制。用MATLAB软件建立伺服系统模型,并仿真PID改进算法对电机转速的控制。

  4. Hardware Evolution of Analog Speed Controllers for a DC Motor

    Science.gov (United States)

    Gwaltney, David A.; Ferguson, Michael I.

    2003-01-01

    This viewgraph presentation provides information on the design of analog speed controllers for DC motors on aerospace systems. The presentation includes an overview of controller evolution, evolvable controller configuration, an emphasis on proportion integral (PI) controllers, schematic diagrams, and experimental results.

  5. Using a micromachined magnetostatic relay in commutating a DC motor

    Science.gov (United States)

    Tai, Yu-Chong (Inventor); Wright, John A. (Inventor); Lilienthal, Gerald (Inventor)

    2004-01-01

    A DC motor is commutated by rotating a magnetic rotor to induce a magnetic field in at least one magnetostatic relay in the motor. Each relay is activated in response to the magnetic field to deliver power to at least one corresponding winding connected to the relay. In some cases, each relay delivers power first through a corresponding primary winding and then through a corresponding secondary winding to a common node. Specific examples include a four-pole, three-phase motor in which each relay is activated four times during one rotation of the magnetic rotor.

  6. Modeling of cross-coupling magnetic saturation in signal-injection-based sensorless control of permanent-magnet brushless AC motors

    OpenAIRE

    Li, Y.; Zhu, Z.Q.; Howe, D.; Bingham, Chris

    2007-01-01

    An improved brushless AC motor model is proposed for use in signal-injection-based sensorless control schemes by accounting for cross-coupling magnetic saturation between the - and -axes. The incremental self- and mutual-inductance characteristics are obtained by both finite-element analysis and measurements, and have been successfully used to significantly reduce the error in the rotor position estimation of sensorless control.

  7. Estimation of Nonlinear DC-Motor Models Using a Sensitivity Approach

    DEFF Research Database (Denmark)

    Knudsen, Morten; Jensen, J.G.

    1995-01-01

    A nonlinear model structure for a permanent magnet DC-motor, appropriate for simulation and controller design, is developed.......A nonlinear model structure for a permanent magnet DC-motor, appropriate for simulation and controller design, is developed....

  8. Study and development of test-bed for brushless DC hub-motor used in EV%纯电动汽车用直流无刷轮毂电机试验台架的研究与开发

    Institute of Scientific and Technical Information of China (English)

    董铸荣; 梁松峰; 田超贺

    2012-01-01

    为解决应用于纯电动汽车上的轮毂电机测试和试验的问题,将虚拟仪器技术应用于轮毂电机性能测试与再生制动试验台的设计中.开展了试验台组成结构、测控系统工作原理的分析,设计了测控系统电路,推导了电机转速、电机扭矩、电流、电压的测量计算公式,提出了电机再生制动试验方法及试验数据的计算公式;在此基础上采用LabVIEW开发了测控系统软件,并进行了实际运行实验.实验结果证明,该试验台设计较为合理,能够将电机的性能测试试验与再生制动试验合二为一,满足了电动汽车轮毂电机相关研究的需求.%In order to solve the problems of performance testing and regenerative braking experiment for hub-motor of electric vehicle (EV), the virtual instrument technology was applied to design the test—bed for hub-motor of EV. After the analysis of the composition of the test-bed and the theory of constitution of the observer and control system, the peripheral circuit was designed. Computational formula for motor rev, motor torque, electric current, electric tension was deduced. The method of regenerative braking experiment and computational formula was presented. On this basis, LabVIEW was presented to develop software for the observer and control system. The experimental data results show that the design of the test-bed is reasonable. Hub-motor performance test and motor regenerative braking test are realized on this test-bed. It can meet the demand of experiments of hub-motor of EV.

  9. Motor Controlled Rotating Base for Directional Submarine Antennas

    Science.gov (United States)

    2012-09-28

    steel gear 172 that is attached to the rotating platform 150. [0044] Suitable motors include, but are not limited to, a brushless DC motor that...parts. Different motors and different gear heads may be used to provide different torques and operating speeds. A different model pin 26

  10. Bat algorithm optimized fuzzy PD based speed controller for brushless direct current motor

    Directory of Open Access Journals (Sweden)

    K. Premkumar

    2016-06-01

    Full Text Available In this paper, design of fuzzy proportional derivative controller and fuzzy proportional derivative integral controller for speed control of brushless direct current drive has been presented. Optimization of the above controllers design is carried out using nature inspired optimization algorithms such as particle swarm, cuckoo search, and bat algorithms. Time domain specifications such as overshoot, undershoot, settling time, recovery time, and steady state error and performance indices such as root mean squared error, integral of absolute error, integral of time multiplied absolute error and integral of squared error are measured and compared for the above controllers under different operating conditions such as varying set speed and load disturbance conditions. The precise investigation through simulation is performed using simulink toolbox. From the simulation test results, it is evident that bat optimized fuzzy proportional derivative controller has superior performance than the other controllers considered. Experimental test results have also been taken and analyzed for the optimal controller identified through simulation.

  11. A Novel Coaxial Magnetic Gear and Its Integration With Permanent-Magnet Brushless Motor

    DEFF Research Database (Denmark)

    Zhang, Xiaoxu; Liu, Xiao; Chen, Zhe

    2016-01-01

    A magnetic geared machine (MGM) is believed to be a promising candidate for high-torque direct-drive application. One of the key issues for developing MGMs is how to resolve the contradiction between the good performance and the complex structure. This paper aims at proposing a novel coaxial...... magnetic gear (CMG), which will not increase the mechanical complexity after integration with a permanent magnet (PM) brushless machine. The prominent feature of the proposed CMG is the introduction of the stator with modulating teeth, which function as the same as the modulating pole......-pieces in the conventional CMG. The integrated MGM can then be achieved by inserting the armature windings into the stator slots. The configuration, harmonic analysis, and torque capability of the proposed CMG are compared with the conventional CMG. The operating principle and electromagnetic performance of the proposed MGM...

  12. Permanent-magnet brushless machines with unequal tooth widths and similar slot and pole numbers \\ud

    OpenAIRE

    Ishak, D.; Zhu, Z.Q.; Howe, D.

    2005-01-01

    This paper presents a comparative study of three-phase permanent-magnet brushless machines in which the slot and pole numbers are similar, with reference to conventional brushless dc machines in which the ratio of the slot number to pole number is usually 3 : 2. Three different motor designs are considered. Two have equal tooth widths, with one having a coil wound on every tooth and the other only having a coil wound on alternate teeth, while the third machine also has coils wound on alternat...

  13. Mathematical Modeling of the Three Phase Induction Motor Couple to DC Motor in Hybrid Electric Vehicle

    Directory of Open Access Journals (Sweden)

    Zulkarnain Lubis

    2009-01-01

    Full Text Available Problem statement: With emphasis on a cleaner environment and efficient operation, vehicles today rely more and more heavily on electrical power generation for success. Approach: Mathematical modeling the components of the HEV as the three phase induction motor couple to DC motor in hybrid electric vehicle was introduced. The controller of Induction Motor (IM was designed based on input-output feedback linearization technique. It allowed greater electrical generation capacity and the fuel economy and emissions benefits of hybrid electric automotive propulsion. Results: A typical series hybrid electric vehicle was modeled and investigated. Conclusion: Various tests, such as acceleration traversing ramp and fuel consumption and emission were performed on the proposed model of 3 phase induction motor coupler DC motor in electric hybrid vehicles drive.

  14. Performance of Networked DC Motor with Fuzzy Logic Controller

    Directory of Open Access Journals (Sweden)

    B. Sharmila

    2010-07-01

    Full Text Available In the recent years the usage of data networks has been increased due to its cost effective and flexible applications. A shared data network can effectively reduce complicated wiring connections, installation and maintenance for connecting a complex control system with various sensors, actuators, and controllers as a networked control system. For the time-sensitive application with networked control system the remote dc motor actuation control has been chosen. Due to time-varying network traffic demands and disturbances, the guarantee of transmitting signals without any delays or data losses plays a vital role for the performances in using networked control systems. This paper proposes Fuzzy Logic Controller methodology in the networked dc motor control and the results are compared with the performance of the system with Ziegler-Nichols Tuned Proportional-Integral-Derivative Controller and Fuzzy Modulated Proportional-Integral-Derivative Controller. Simulations results are presented to demonstrate the proposed schemes in a closed loop control. The effective results show that the performance of networked control dc motor is improved by using Fuzzy Logic Controller than the other controllers.

  15. Experimental Investigation of an Automobile Air-Conditioning System using Integrated Brushless Direct Current Motor Rotary Compressor

    Directory of Open Access Journals (Sweden)

    Sukri M.F.

    2016-01-01

    Full Text Available The present study presents an experimental investigation on the effect of condenser air inlet temperature and dimensionless parameter of X on the performance of automobile air-conditioning (AAC system using integrated brushless direct current motor-rotary compressor and electronic expansion valve. The other components of AAC system are from original component of AAC system used for medium size passenger car. The experimental results showed that the increment of the condenser air inlet temperature and X caused an increase in condensing temperature, cooling capacity and compressor work, while decreasing the coefficient of performance (COP. Meanwhile, the evaporating temperature increase with the increment of condenser air inlet temperature, but decrease with decrement of X. In general, AAC system have to work at higher value of X in order to produce more cooling capacity, thereby increment in compressor work also occurs due to energy balance. However, at higher value of X, the COP of the system dropped due to dominant increase in compressor power, as opposed to a rise in cooling capacity. Due to this reason, the best operation of this compressor occurs at X = 4.96 for constant T5 (35ºC, or at T5 = 30ºC for constant X (4.96.

  16. Performance Evaluation of Photo-Voltaic fed Brushless Direct Current Motor for Agricultural applications

    Directory of Open Access Journals (Sweden)

    B.V.A.S.S.R.Krishna

    2015-10-01

    Full Text Available This work presents an effective approach towards reduction of steps in power conversion from solar photovoltaic system to load. When a Photovoltaic system is fed to an induction motor, it requires MPPT controller and an Inverter circuit in first and second stages since Induction motor works with a.c supply. By eliminating the Inverter circuit and employing a BLDC motor the efficiency of the system can be improved. The BLDC motor works under Electronic commutation principle with VSI embedded in the motor. A PV Panel fed to the "R" load with Hill Climbing MPPT is considered along with practical irradiance data. Simulation is carried out by formulating the mathematical model for the photovoltaic source, MPPT, Motor. System performance‟s are investigated under different levels of solar insolation

  17. On-line Identification of the DC motor Parameters by using Least Mean Square Recursive Method

    Directory of Open Access Journals (Sweden)

    Marian Gaiceanu

    2014-09-01

    Full Text Available The on-line least square parameters (electrical and mechanical identification method of the separately DC motor is presented in this paper. The parameters of the DC machine are time dependent; therefore, for the DC drive control the on-line parameters identification procedure is mandatory. By knowing accurately the DC motor parameters, the parameters of the DC speed and current cascade controllers can be obtained.

  18. Forward and Reverse Motoring of DC Hoist Motor on Container Crane (CC Operation

    Directory of Open Access Journals (Sweden)

    Rukmini

    2015-03-01

    Full Text Available Container cranes (CC become the highest electric energy consumption equipment in container terminal. Therefore it is important to study and analyze the hoist motor as the largest motor on container crane operation to look for opportunities in use energy efficiently. Lifting and lowering the container as the fixed operation of CC. Lifting the container as forward operating of hoist motor and lowering the container as reverse operating of hoist motor. The type of DC motor have used to modelling. Simulink (one of Matlab toolboxes was used to model the forward and reverse of DC hoist motor. When lifting the container (forward motoring, the current required depends on the applied load torque. But when lowering the containers (reverse motoring, the voltage generated by the engine polarity reverse is determined by the downward movement of containers (mass and height. Reverse the polarity, and let the motor functions as a generator, produces a current and then the potential energy was calculated. Conclusions were drawn at the end of the paper.

  19. Torque Control of a Separate-Winding Excitation DC Motor for a Dynamometer

    Science.gov (United States)

    2010-12-01

    In this thesis, the theory behind a separate-winding excitation direct current ( DC ) motor and profile of the motor’s torque versus rotor speed is... DC motor is proportional to the armature current. From this theory, a program was written in Simulink with Xilinx embedded software to enable a user...to command the DC motor torque through a Graphical User Interface (GUI). The command is then converted to control armature current through a Field

  20. DC servo motor control using digital signal processors; Digital keisoku seigyo. 6. DSP wo mochiita DC servo motor seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Sato, T. [Max Co. Ltd., Tokyo (Japan)

    1999-03-15

    A digital control development effort is introduced, citing a case of DSP (digital signal processor)-aided DC servo motor control for the flat head type pen plotter. In a real plotter, a complicated nonlinear problem will arise because the natural frequency varies dependent upon the pen position. For the inhibition of such vibration which occurs during acceleration and deceleration, nonlinear elements have to be taken into consideration at the designing stage. In this report, the effort is focused on motor axis control only, and the DC servo control problem is solved as a linear problem. A DSP board type DS1102 of the dSPACE Corporation is named for this work. Using this board, the C code is automatically generated out of a control block constructed through SIMULINK, and a real-time test is conducted after downloading the code to the DSP processor. Since the quantity of DC servo motor rotation is quantized in an encoder, the result would contain much error and cause instability in the control if the quantity as obtained was subjected to differential calculus. Such being the case, velocity data for the control in this report are acquired by use of an observer. (NEDO)

  1. 无刷双馈电动机最优压频控制策略%The Optimal Voltage Frequency Control Strategy of Brushless Double-fed Motor

    Institute of Scientific and Technical Information of China (English)

    邓先明; 王冬冬; 马志勋; 张贞飞

    2009-01-01

    无刷双馈电动机与其它电动机相比具有独特的优越性能,特别适合风机、水泵类负载的开环控制.文章以笼型无刷双馈电动机为研究对象,建立了无刷双馈电动机的数学模型,借助Matlab/Simulink仿真软件详细分析了电动机在调速过程中的最优压频控制策略.该策略可使电动机以最大功率因数和最小变频器容量稳定地运行在相应的转速上.%Compared with other motors, the brushless double-fed motor (BDFM) has its own unique advantages, especially suits for the open-loop control of loads of fans, pumps load and so on. Taking the cage brushless double-fed motor as research object, the paper established a mathematical model of the BDFM. Using Matlab/Simulink software, it analyzed the optimal voltage frequency control strategy in course of speed-regulation control in details. The strategy can make the motor run stablly in corresponding speed at the maximum power factor and the minimum converter capacity.

  2. Analysis and Reducing Techniques Review of Torque Ripple for Permanent Magnet Brushless Motor%永磁无刷电机转矩脉动分析及削弱方法

    Institute of Scientific and Technical Information of China (English)

    李节宝; 章跃进

    2011-01-01

    Torque ripple suppression was the research focus of permanent magnet brushless motor, domestic and foreign experts and scholars had proposed lots of solutions for the problem. First analysis the compositions of permanent magnet brushless motor torque ripple and various reasons which casue the torque ripple, then the commonly use methods of reducing permanent magnet brushless motor pulsating ripple was summarized and introduced.%抑制转矩脉动是永磁无刷电机研究重点,国内外专家学者提出了诸多解决方法.在分析永磁无刷电机脉动转矩的组成及产生原因的基础上,综合介绍了削弱永磁无刷电动机转矩脉动常用的一些方法.

  3. Investigation of a New Flux-Modulated Permanent Magnet Brushless Motor for EVs

    Directory of Open Access Journals (Sweden)

    Ying Fan

    2014-01-01

    Full Text Available This paper presents a flux-modulated direct drive (FMDD motor. The key is to integrate the magnetic gear with the PM motor while removing the gear inner-rotor. Hence, the proposed FMDD motor can achieve the low-speed high-torque output and high-speed compact design requirements as well as high-torque density with a simple structure. The output power equation is analytically derived. By using finite element analysis (FEA, the static characteristics of the proposed motor are obtained. Based on these characteristics, the system mathematical model can be established. Hence, the evaluation of system performances is conducted by computer simulation using the Matlab/Simulink. A prototype is designed and built for experimentation. Experimental results are given to verify the theoretical analysis and simulation.

  4. Investigation of a new flux-modulated permanent magnet brushless motor for EVs.

    Science.gov (United States)

    Fan, Ying; Gu, Lingling; Luo, Yong; Han, Xuedong; Cheng, Ming

    2014-01-01

    This paper presents a flux-modulated direct drive (FMDD) motor. The key is to integrate the magnetic gear with the PM motor while removing the gear inner-rotor. Hence, the proposed FMDD motor can achieve the low-speed high-torque output and high-speed compact design requirements as well as high-torque density with a simple structure. The output power equation is analytically derived. By using finite element analysis (FEA), the static characteristics of the proposed motor are obtained. Based on these characteristics, the system mathematical model can be established. Hence, the evaluation of system performances is conducted by computer simulation using the Matlab/Simulink. A prototype is designed and built for experimentation. Experimental results are given to verify the theoretical analysis and simulation.

  5. 无刷直流电机反电势自适应滑模观测%Adaptive Sliding-mode Observer for Back Electromotive Force Estimation of Brushless DC Motror

    Institute of Scientific and Technical Information of China (English)

    郭鸿浩; 周波; 左广杰; 唐国芬; 许恩利

    2011-01-01

    采用转矩环取代传统的电流环,可减小非理想反电势无刷直流电机(brushlessDCmotor,BLDCM)的转矩脉动,提高其控制性能,而转矩环中反馈转矩计算的关键在于绕组反电势的准确获取。建立考虑参数偏差的滑模观测器(sliding—modeobserver,SMO)对反电势进行实时观测,定量分析了定子电阻偏差对观测结果的影响,分析表明反电势观测的稳态误差等于电阻偏差量与电流的乘积。为消除这一影响,利用李雅普诺夫(Lyapunov)稳定性理论,设计了定子电阻参数辨识的自适应率,在线辨识得到的电阻参数用于调%The torque ripple of brushless DC motor (BLDCM) with un-ideal back electromotive force (EMF) waveforms could be attenuated by replacing the conventional current loop with torque loop, thus a better performance could be obtained. Further, the key issue of feedback torque calculation in torque loop was the estimation of back EMF. So a sliding-mode observer (SMO) was employed to estimate the back EMF in real time where the parameter deviation was considered. Then the influences of stator resistance deviation on observation results were quantitatively analyzed and the analysis results show the steady state error of observed back EMF was equal to the product of current and resistance deviation value. To eliminate this effect, an adaptive law of parameter identification for stator resistance was designed based on Lyapunov stability theory and the online identification result was used to regulate the coefficient matrix of SMO. Combining with the resistance estimator, a novel adaptive sliding-mode observer was constructed. Experimental results, using RT-LAB real time controller implementation, verify the validity of the analysis results and prove that the back EMF of BLDC can be correctly observed by the proposed method.

  6. Design of a ZVS PWM inverter for a brushless DC motor in an EMA application

    Science.gov (United States)

    Bell, J. Brett; Nelms, R. M.; Shepherd, Michael T.

    1993-01-01

    The Component Development Division of the Propulsion Laboratory at Marshall Space Flight Center (MSFC) is currently investigating the use of electromechanical actuators for use in space transportation applications such as Thrust Vector Control (TVC). These high power servomechanisms will require rugged, reliable, and compact power electronic modules capable of modulating several hundred amperes of current at up to 270 Vdc. This paper will discuss the design and implementation of a zero-voltage-switched PWM (Pulse Width Modulation) inverter which operates from a 270 Vdc source at currents up to 100 A.

  7. IMPLEMENTATION AND STUDY OF BLDC MOTOR DRIVE SYSTEM

    OpenAIRE

    2016-01-01

    The BLDC motor  is an electronically commutated dc motor becoming very popular in many applications. There are various speed control methods used for BLDC motor. The performance of BLDC motor drives can be improved using sensored control techniques over sensorless technology. This paper presents Brushless Direct Current motor drive system and its sensored speed control technique with PWM.  Advantages and limitations of sensorless techniques are reviewed and then, sensored speed cont...

  8. PMBLDC motor drive with power factor correction controller

    DEFF Research Database (Denmark)

    George, G.J.; Ramachandran, Rakesh; Arun, N.

    2012-01-01

    This paper presents a boost converter configuration, control scheme and design of single phase power factor controller for permanent magnet brushless DC motor (PMBLDCM) drive. PMBLDC motors are the latest choice of researchers, due to the high efficiency, silent operation, compact size, high reli....... Simulations are done using MATLAB/ SIMULINK software. © 2012 IEEE....

  9. Controlling DC Motor using Microcontroller (PIC16F72) with PWM

    OpenAIRE

    Shruti Shrivastava, Jageshwar Rawat, Amit Agrawal

    2012-01-01

    Motion control plays a vital role in industrial atomization. Different types of motors AC, DC, SERVO or stepper are used depending upon the application; of these DC motors are widely used because of easier controlling. Among the different control methods for DC motor armature voltage control method using pulse width modulation (PWM) is best one. We can realize the PWM using H-bridge built with IGBT switches or transistors. To generate PWM signals we use PIC16F7...

  10. Dynamical and steady-state characteristics of DC motors powered by photovoltaic systems via DC-DC buck-boost switch mode converter

    Energy Technology Data Exchange (ETDEWEB)

    Widyan, M.S.

    2010-07-01

    Photovoltaic (PV) cells for powering direct current (DC) motors are designed to provide maximum output power at the rated conditions of the motors. This paper presented the dynamic and steady-state characteristics of DC shunt, series and permanent-magnet motors fed by PV cells via a DC-DC buck-boost (step up-step down) switch mode converter. It considered the nonlinearities of the output characteristics of the PV cells and that of the magnetization curve of the machines. In order to address the problem of voltage regulation of the PV cells and the variation in solar illumination, the duty cycle controls the output voltage of the DC-DC converter to maintain a fixed voltage across the terminals of the motors at any realistic loading conditions. In this study, the DC-DC buck-boost switch mode converter achieved a fixed voltage across the terminals of the motors and therefore good speed regulation under a wide range of loading conditions and solar intensities. The entire study was carried out using the Matrix Laboratory Program MATLAB{sup TM} software.

  11. Torque Ripple Suppression Integrated Starter/Generator Control Strategy for Brushless Wound-Field Synchronous Motor

    Institute of Scientific and Technical Information of China (English)

    骆光照; 张围围; 杨南方; 马鹏; 刘卫国

    2012-01-01

    A flux linkage compensation field oriented control (FOC) method was proposed to suppress the speed and torque ripples of a hrusbless wound-fleld synchronous motor in its starting process. The starting process was analyzed and the model of wound-field synchronous electric machine was established. The change of field current of the electric machine was described mathematically for simplified exciter and rotate rectifier. Based on the traditional field control, the flux linkage compensation was introduced in d-axis current to counteract the flux ripple. Some simulation and preliminary experiments were implemented. The results show that the proposed method is feasible and effective.

  12. Research on DSP-based Asynchronous Motor Control Technology

    Directory of Open Access Journals (Sweden)

    Jun Yao

    2013-05-01

    Full Text Available The Motor in a variety of electrical transmission and position servo system occupies an extremely important position. After the DSP technology being applied to the motor control, the unification of the hardware and the flexibility of the software can be combined. Take the brushless DC motor for example, studied the mathematical model and the structure of the motor control system, also obtained the design scheme of the DSP-based asynchronous motor control system. With TI's 32 bit fixed point DSPTMS320F2812 as the core design of the hardware system, we wrote the system software, debug the motor control system and the results show that the system achieves the expected effect. The results of the research can be applied to brushless DC motor and other motor control, it will have a wide application prospects.

  13. Design and application of a novel high precision and low cost electronic tachogenerator for sensor-based brushless direct current motor drivers

    Science.gov (United States)

    Ozgenel, Mehmet Cihat; Bal, Gungor; Uygun, Durmus

    2017-03-01

    This study presents a precise speed control method for Brushless Direct Current (BLDC) Motors using an electronic tachogenerator (ETg) instead of an electro-mechanical tachogenerator. Most commonly used three-phase BLDC motors have three position sensors for rotor position data to provide commutation among stator windings. Aforementioned position sensors are usually Hall-effect sensors delivering binary-high and binary-low data as long as the motor rotates. These binary sets from three Hall-effect sensors can be used as an analogue rotor speed signal for closed loop applications. Each position sensor signal is apart from 120 electrical degrees. By using an electronic circuitry, a combination of position sensor signals is converted to the analogue signal providing an input to a PI speed controller. To implement this, a frequency to voltage converter has been used in this study. Then, the analogue speed signal has been evaluated as rotor speed data in comparison with the reference speed. So, an ETg system has been successfully achieved in place of an electro-mechanical tachogenerator for BLDC motor speed control. The proposed ETg has been tested under various speed conditions on an experimental setup. Employed tests and obtained results show that the proposed low-cost speed feedback sub-system can be effectively used in BLDC motor drive systems. Through the proved method and designed sub-system, a new motor controller chip with a speed feedback capability has been aimed.

  14. ANALYSIS OF THERMAL STATE OF TRACTION BRUSHLESS PERMANENT MAGNET MOTOR FOR MINE ELECTRIC LOCOMOTIVE

    Directory of Open Access Journals (Sweden)

    A. V. Matyuschenko

    2016-12-01

    Full Text Available Purpose. The study was conducted to analyze thermal state of the traction permanent magnet synchronous motor for mine electric battery locomotive when operating in continuous and short-time duty modes. These operating modes are selected for study, as they are typical for mine electric locomotives. Methodology. Thermal calculation was performed by means of FEM in three-dimensional formulation of problem using Jmag-Designer. Results. The modeling results of thermal state of the PMSM in continuous and short-time duty operation modes showed good agreement with experimental results. The results showed that the temperature of PM is higher than temperature of the stator winding in continuous operation mode. It was found that PM temperature might reach excessive values because of the high presence of eddy current losses in neodymium PM. Therefore, special attention in the design and testing of PMSM should be paid to the temperature of PM in various operation modes. Practical value. It was recommended to use high temperature permanent magnets in traction PMSM to avoid demagnetization of PM and performance degradation.

  15. Research of Zero-Crossing Detection for Sensorless Brushless DC Based on DSC%基于DSC的无刷直流电动机过零检测方法

    Institute of Scientific and Technical Information of China (English)

    朱乐乐; 王宜怀; 胡玉鑫; 王浩

    2013-01-01

    The key technology of sensorless brushless DC motor control is zero-crossing detection. Based on full research and analysis of the hack-EMF motor principle,wave and traditional detection methods,a new method of back-EMF zero-crossing detection was introduced. The method did not rigidly adhere to the principles of traditional back-EMF zero-crossing detection, and the motor midpoint, depth filter and voltage comparison circuits in the design of the traditional zero-crossing detection circuit were rejected. The commutation points were received by realizing three-phase voltage real time collection,filtering and designing the effective software algorithms. The method was applied in the electric car control system. The experiment result shows that the method has some advantages which are simple zero-crossing detection circuits, software with clear structure and good real-time and so on.%无位置传感器无刷直流电动机的过零检测是该类型电机控制的关键技术.在充分研究与分析该类电机的反电动势原理、波形及传统检测方法的基础上,提出了一种反电动势过零检测新方法.该方法不拘泥于传统反电动势过零检测原理,摈弃了传统过零检测电路设计中的电机中点、深度滤波及电压比较等电路,利用DSC实现三相端电压动态实时采集、滤波,并设计有效的软件算法,得到换相点.实际应用结果表明,该过零检测电路具有实现简洁、软件结构清晰及实时性好等优点.

  16. Development of patent technology for brushless doubly fed motor%无刷双馈电机专利技术发展

    Institute of Scientific and Technical Information of China (English)

    张颖超

    2015-01-01

    近年来,作为可再生能源的风力发电受到了全球范围的广泛关注,人们越来越重视适用于风力发电的新型电机,无刷双馈电机以其简单的结构,高可靠性,具有异步和同步电机两种电机的综合特点,通过控制激磁绕组的电压和频率易于实现变速恒压恒频发电,是一种适合风力发电运行环境的新型电机。本文主要以DWPI、SIPOABS专利数据库以及CNTXT数据库中的检索结果为分析样本,从专利文献的视角对无刷双馈电机的发展进行了全面的统计分析,总结了与无刷双馈电机相关的国内和国外专利的申请趋势、主要申请人分布以及其转子结构的发展路线做了一定的分析,并从中得到一定的规律。%In recent years,wind power as the renewable energy by widespread concern in the global scope, people pay more and more attention to applicable to wind power as a new kind of motor, brushless doubly fed machine with its simple structure,high reliability,with the comprehensive characteristic of asynchronous and synchronous motor,two kinds of motor,by controlling the voltage and frequency of the excitation winding is easy to realize the variable speed constant frequency and constant voltage power,is a suitable for wind power generation operating environment as a new kind of motor.This paper mainly to DWPI,SIPOABS patent database and CNTXT database retrieval results for the analysis of the sample,from the patent literature from the perspective of the development of brushless doubly fed machine were comprehensive statistical analysis,summarized and brushless doubly fed machine related domestic and foreign patent application trend, mainly distributed in the applicant and the rotor structure of the development route do some analysis, and the obtained certain rules.

  17. Wideband impedance measurements and modeling of DC motors for EMI predictions

    NARCIS (Netherlands)

    Diouf, Fatou; Leferink, Frank; Duval, Fabrice; Bensetti, Mohamed

    2015-01-01

    In electromagnetic interference prediction, dc motors are usually modeled as a source and a series impedance. Previous researches only include the impedance of the armature, while neglecting the effect of the motor's rotation. This paper aims at measuring and modeling the wideband impedance of a dc

  18. Implementation of Brushed DC Motor Control in LabVIEW FPGA

    Directory of Open Access Journals (Sweden)

    K. Lamár

    2013-12-01

    Full Text Available The paper introduces the fundamentals of motor control. It explains the basic equations and introduces the control diagram of the brushed DC motor. It introduces the four quadrant DC chopper circuit and the basic methods to operate it. After that, it explains the fundamentals of the current control of DC motors and its two basic methods: the pulse width modulation and the hysteresis current control. Finally it gives a short example of the practical implementation of the hysteresis current controller for the four quadrant DC chopper in LabVIEW FPGA.

  19. 基于Matlab/Simulink的无刷双馈电动机的动态特性仿真研究%Dynamic Features Simulation Research on Brushless Doubly-Fed Motor Based on Matlab/Simulink

    Institute of Scientific and Technical Information of China (English)

    樊贝; 薛冰

    2012-01-01

    为适应大功率风机和泵类负载的调速性能,提出无刷双馈电动机的技术方案,并利用Matlab/Simulink建立无刷双馈电动机的一般模型进行动态仿真。仿真结果显示,无刷双馈电动机在单馈异步运行状态下,具有良好的异步电动机的启动运行特性。在双馈同步运行状态下,具有普通同步电动机转速特性,为进一步深入研究无刷双馈电动机的控制策略提供了参考。重点介绍无刷双馈电动机的结构特点和工作原理。%In order to adapt the speed regulation performance of big power blower and pump loading,the brushless doubly-fed motor's technology proposals are given out.And the dynamic simulation of brushless doubly-fed motor model is setted up based on Matlab/Simulink.The simulation results show that the brushless doubly-fed motor has good features of asynchronous motor starts and operates features under the states of single-fed asynchronous operation.It also has common synchronous motor speed features under doubly-fed synchronous operation state.These results provide reference for futher study on brushless doubly-fed motor's control strategy.And the structure features and working principle of brushless doubly-fed motor are introduced.

  20. Analisis Perhitungan Panas Motor DC SHUNT Pada Saat Start Dan Pengereman ( Aplikasi pada Laboratorium Konversi Energi Listrik FT-USU ).

    OpenAIRE

    Ginting, Eka Dian Arjuna

    2011-01-01

    Motor adalah mesin yang mengubah energi listrik menjadi energi mekanis. Pada motor arus searah energi listrik arus searah diubah menjadi energi mekanis. Dalam dunia industri, motor arus searah banyak digunakan sebagai penggerak pompa air, blower, hoist pada crane. Dalam operasi suatu motor DC maka akan timbul rugi – rugi panas sehingga terjadi kenaikan suhu yang menyebabkan kerusakan isolasi pada motor DC tersebut. Pada motor DC rugi – rugi panas lebih besar terjadi pada kea...

  1. 永磁无刷轮毂电机分数槽绕组的设计与分析%Design of PM Brushless Hub Motor with Fractional Ratio of Slots and Poles

    Institute of Scientific and Technical Information of China (English)

    罗玲; 梅康元

    2011-01-01

    永磁电机由于齿槽效应产生的定位转矩和转矩脉动,在转速较低的轮毂电机中尤为显著.无刷直流电机常用的整数槽绕组节距较大,且绕组相互重叠,使得绕组端部很大.该文对于极对数不同的整数槽绕组电机模型和分数槽绕组电机模型的绕组和定位转矩进行对比研究.理论分析表明分数槽绕组能够有效减小电机定位转矩与转矩脉动,减小绕组端部长度.最后使用有限元仿真对理论分析进行了验证.%The torque ripple arosed by the slot effect in PM motor are more significant in the low speed hub motor for electric vehicle use. The conventional integer windings of brushless DC motor have a big pitch, and the windings overlapping, winding ends is big. In this paper, the integer winding model and fractional slot winding model have different rotor polar logarithmic was discussed. Theoretical analysis shows fractional slot winding can effectively reduce the end of windings and cogging torque. Finally, theoretical analysis is verified by finite element analysis.

  2. Application of DSP in Motor Control System%DSP在电机控制系统中的应用

    Institute of Scientific and Technical Information of China (English)

    周崐; 黄友桥; 曹晨

    2011-01-01

    Taking brushless DC motor and TMS320LF2407 for example,this paper introduces the application of DSP in motor control system.It gives software and hardware design of brushless DC motor control system based on DSP%本文以无刷直流电机和TMS320LF2407为例,介绍了DSP在电机控制系统中的应用,给出了基于DSP的无刷直流电机控制系统的软硬件设计。

  3. 双转式永磁无刷电动机的控制%Control of Dual-Rotor Permanent Magnet Brushless Motors

    Institute of Scientific and Technical Information of China (English)

    何苗

    2009-01-01

    Mathematical model and closed-loop speed control strategies of dual-rotor permanent magnet brushless motors were analyzed. A set of software and hardware control system was designed based on the chip of TMS320F2407, which was tested finally. The final testing data indicates that the control system can achieve preferable performance and high control precision.%在普通永磁无刷电动机基础上,分析了双转式永磁无刷电动机的数学模型及速度闭环控制策略,并在该基础上建立以TMS320F2407为核心的闭环控制软硬件系统,并进行了试验.试验结果表明该种控制系统控制性能较好,控制精度较高.

  4. 高速永磁无刷电机设计与控制系统研究%High-speed permanent magnet motor design and control system of brushless

    Institute of Scientific and Technical Information of China (English)

    郑睿鹏

    2015-01-01

    永磁无刷电机具有结构简单、无励磁损耗、效率高等特点,适合高速场合。目前,高速永磁无刷电机已经在一些电动汽车中得到实际应用,并且在分布式发电供电系统中显示了其价值和重要性。通过对高速永磁无刷电机设计的关键性问题的探讨、对高速永磁无刷电机控制系统的研究得出,高速电机的转速非常高,而且其功率的密度非常大,其几何尺寸小于其输出功率相同的低速电机,这些特征使得它在工业领域受到了广泛的关注和应用。%Permanent magnet brushless motor has a simple structure , no excitation loss, high efficiency, suitable for high speed applications. Currently, high-speed permanent magnet brushless motor has been applied in a number of electric vehicles, and has demonstrated its value and importance in distributed power generation and distribution systems. By discussing the key issues of high-speed permanent magnet brushless motor design, the study of high-speed permanent magnet brushless motor control system derived, high-speed motor speed is very high, and its power density is very large, and its geometry is less than its the same output power low-speed motor, these features make it in the industrial sector has been widespread concern and applications.

  5. Magnification of starting torques of dc motors by maximum power point trackers in photovoltaic systems

    Science.gov (United States)

    Appelbaum, J.; Singer, S.

    1989-01-01

    A calculation of the starting torque ratio of permanent magnet, series, and shunt-excited dc motors powered by solar cell arrays is presented for two cases, i.e., with and without a maximum-power-point tracker (MPPT). Defining motor torque magnification by the ratio of the motor torque with an MPPT to the motor torque without an MPPT, a magnification of 3 for the permanent magnet motor and a magnification of 7 for both the series and shunt motors are obtained. The study also shows that all motor types are less sensitive to solar insolation variation in systems including MPPTs as compared to systems without MPPTs.

  6. 基于DSP控制的纯电动汽车无刷直流电动机%Brushless Direct Current Motor Based on DSP Control on Pure Electric Vehicle

    Institute of Scientific and Technical Information of China (English)

    吴敏

    2011-01-01

    无刷直流电动机是一种高性能的电动机,它具有结构简单、运行可靠、维护方便、运行效率高、无励磁损耗、运行成本低和调速性能好等优点,因此,它在电动汽车上的应用与日俱增.对无刷直流电动机控制的优化是人们一直期待解决的问题。文章设计了利用TMS320LF2407DSP控制器构成的无刷直流电动机的无位置传感器控制的系统硬件和系统软件,实现了对无位置传感器无刷直流电动机的优化控制,试验证明了该方法的正确性和有效性。%Brushless direct current motor is a type of motor with high performance and many advantages, including simple structure, reliable operation, convenient maintenance, high efficiency, non-excitation loss, low cost and good performance of speed governing. Therefore, its application on electric vehicles has increased. People have been looking forward to the solution to the optimization of the control of brushless direct current motor. This paper designs the eontrolling system's hardware and software for no-position sensor on the brushless current motor with the structure of TMS320LF2407 DSP controller, which optimized the brushless current motor with no-position sensor. The test also proves the correctness and effectiveness of this method.

  7. 航空用永磁无刷电机复合驱动中转速波动研究%Analysis of Speed Fluctuation of Brushless PM Motor in Aircraft by Compound Driven

    Institute of Scientific and Technical Information of China (English)

    吕永健; 李飞; 解亮

    2011-01-01

    This paper analysed the sine/square wave compound driven for brushless PM motors in aircraft EMA, deduced the dynamical equation of the speed during the switch process and researched the major factors which affect the speed fluctuation. The simulation model of compound driven for brushless PM motor and the platform of the motion control system for universal motors were established. The results of the analysis, simulations and experiments prove that the speed fluctuation can be controlled within acceptable limits and the compound driven for brushless PM motor is feasibility.%研究了航空EMA用永磁无刷电机正弦波/方波复合驱动策略,推导了永磁无刷电机在驱动方式切换时的转速动态方程,分析了影响切换过程中转速波动的主要因素.建立了永磁无刷电机复合驱动的仿真模型和实验平台,仿真和实验结果表明,正弦波/方波复合驱动时的转速波动可以控制在允许的范围内,验证了复合驱动控制策略的有效性.

  8. Stability and Speed Control of a Series-Wound DC Motor

    Science.gov (United States)

    Khoroshun, A. S.

    2016-07-01

    A speed control for a series-wound DC motor is proposed. It is shown that steady-state rotation is stabile and robust. Stability is analyzed using a quadratic Lyapunov function. Its explicit expression is derived

  9. A new method for speed control of a DC motor using magnetorheological clutch

    Science.gov (United States)

    Nguyen, Quoc Hung; Choi, Seung-Bok

    2014-03-01

    In this research, a new method to control speed of DC motor using magnetorheological (MR) clutch is proposed and realized. Firstly, the strategy of a DC motor speed control using MR clutch is proposed. The MR clutch configuration is then proposed and analyzed based on Bingham-plastic rheological model of MR fluid. An optimal designed of the MR clutch is then studied to find out the optimal geometric dimensions of the clutch that can transform a required torque with minimum mass. A prototype of the optimized MR clutch is then manufactured and its performance characteristics are experimentally investigated. A DC motor speed control system featuring the optimized MR clutch is designed and manufactured. A PID controller is then designed to control the output speed of the system. In order to evaluate the effectiveness of the proposed DC motor speed control system, experimental results of the system such as speed tracking performance are obtained and presented with discussions.

  10. Neural adaptive sliding mode speed tracking control of a DC motor

    Institute of Scientific and Technical Information of China (English)

    刘子龙; 刘国忠; 刘洁

    2004-01-01

    We propose a BPNN based adaptive sliding mode control scheme for speed tracking of a DC motor with unknown system nonlinearities. The input-output linearization technique is used to cancel the nonlinearities, and output of the BPNN is incorporated into the controller in the proposed scheme. It is shown that the rotor speed of a DC motor can follow any arbitrarily selected trajectories under variable load torque. Then the application of the approach is tested via some simulations.

  11. AVR Microcontroller-based automated technique for analysis of DC motors

    Science.gov (United States)

    Kaur, P.; Chatterji, S.

    2014-01-01

    This paper provides essential information on the development of a 'dc motor test and analysis control card' using AVR series ATMega32 microcontroller. This card can be interfaced to PC and calculates parameters like motor losses, efficiency and plot characteristics for dc motors. Presently, there are different tests and methods available to evaluate motor parameters, but a single and universal user-friendly automated set-up has been discussed in this paper. It has been accomplished by designing a data acquisition and SCR bridge firing hardware based on AVR ATMega32 microcontroller. This hardware has the capability to drive the phase-controlled rectifiers and acquire real-time values of current, voltage, temperature and speed of motor. Various analyses feasible with the designed hardware are of immense importance for dc motor manufacturers and quality-sensitive users. Authors, through this paper aim to provide details of this AVR-based hardware which can be used for dc motor parameter analysis and also for motor control applications.

  12. Voltage Tracking of a DC-DC Flyback Converter Using Neural Network Control

    Directory of Open Access Journals (Sweden)

    Wahyu Mulyo Utomo

    2012-01-01

    Full Text Available This paper proposes a neural network control scheme of a DC-DC Flyback converter that will step up a 12V DC and applied it on brushless DC motor with 12 and 24V dc. In this technique, a back propagation learning algorithm is derived. The controller is designed to track the output voltage of the DC-DC converter and to improve performance of the Flyback converter during transient operations. Furthermore, to investigate the effectiveness of the proposed controller, some operations such as starting-up and reference voltage variations are verified. The numerical simulation results show that the proposed controller has a better performance compare to the conventional PI-Controller method.

  13. Optimization of Consumed Power in Two Different DC Motors Coupled Based on Genetic Algorithm

    Directory of Open Access Journals (Sweden)

    Mehrdad Jafarboland

    2011-01-01

    Full Text Available A single DC motor can be substituted by two different couple DC motors in submarines. By this way, by varying the speed of submarine, the power of propellant and subsequently the mechanical power of these motors would vary. One important promlem in controlling the mechanical coupling of these motors is the power sharing between them. In the previous reports the mechanical power was shared between them in nonoptimized manner. In this paper an optimized cantroller is indroduced that optimize the efficiency of the system. The power sharing between these motors would vary according to their speed. The proposed controller is based on Genetic Algoritm and is able to share the mechanical power between the motors in an optimized manner at different speeds. The simutation results shows the well behavior of system and also the optimize power sharing.

  14. Design and heat dissipation performance simulation of EPS brushless motor ECU structure%EPS无刷电机控制器结构设计与散热性能试验

    Institute of Scientific and Technical Information of China (English)

    吴高峰; 冉振云; 陈奇志

    2014-01-01

    为解决汽车电动助力转向系统大功率无刷电机控制器发热过大所致的功率MOSFET管损坏问题,结合固体结构热传导原理对控制器结构进行设计。运用有限体积法的控制器三维温度场模型,对该汽车电动助力转向系统(EPS)无刷控制器结构散热性能进行数值模拟,对控制器大电流、高温运行的情况下电路板温升进行试验测定,对比试验数据与数值计算结果,新型控制器结构设计合理,散热性能最好。数值模拟对新型EPS无刷控制器的批量生产具有重要实际意义。%Based on heat conduction principle,the EPS(electric power steering)brushless motor ECU(electronic control units) structure was designed to eliminate the power Mosfet damage caused by overheating of EPS system’s brushless motor ECU. By using ECU 3D temperature field model of the finite volume method,the heat dissipation performance of the brushless motor ECU structure was simulated and analyzed. PCB temperature rise was measured under the condition of large current and high temperature. The comparison between test values and numerical simulation results show that the design of the new type ECU structure is reasonable and its heat dissipation performance is best. The numerical simulation has the important practical significance for mass production of new EPS brushless ECU.

  15. Study on the Reliability of the Brushless PM Motor Based on Bayes Theory%基于Bayes理论的永磁无刷电机的可靠性研究

    Institute of Scientific and Technical Information of China (English)

    何银光; 胡小东; 常荣胜

    2012-01-01

    为了能够提高永磁无刷电机的可靠性评估水平,利用Bayes理论对其进行了可靠性评估.文中首先给出了Bayes理论的基本概念,然后建立了Weibull分布下永磁无刷电机的Bayes理论模型;最后,基于上述模型设计了永磁无刷电机的可靠性试验,根据截尾试验获得的可靠性数据对永磁无刷电机可靠性参数进行了估计.分析结果表明利用Bayes理论采用较少的样本就能获得充分的可靠度的参数估计值,具有较好的前瞻性.%In order to improve the reliability evaluation level of the brushless PM motor, and the Bayes theory is applied to have reliability evaluation of it. First, the basic conceptions of the Bayes theory is analyzed, and then the Bayes theory model of the brushless PM motor of WeibuII distribution is studied, and finally the reliability test of the brushless PM motor is designed, and the reliable pnrnmrtcr of the brushless PM notor is evaluated according to the reliable data obtained from the censored lifetime data test, and results show that this method can get the adequate parameter evaluation value of reliability, this method has better estimation character.

  16. Development of a dc Motor Model and an Actuator Efficiency Model

    Energy Technology Data Exchange (ETDEWEB)

    Watkins, John Clifford; Mc Kellar, Michael George; DeWall, Kevin George

    2001-07-01

    For the past several years, researchers at the Idaho National Engineering and Environmental Laboratory, under the sponsorship of the U.S. Nuclear Regulatory Commission, have been investigating the ability of motor-operated valves (MOVs) used in Nuclear Power Plants to close or open when subjected to design basis flow and pressure loads. Part of this research addresses the response of a dcpowered motor-operated gate valve to assess whether it will achieve flow isolation and to evaluate whether it will slow down excessively under design-basis conditions and thus fail to achieve the required stroke time. As part of this research, we have developed a model of a dc motor operating under load and a model of actuator efficiency under load based on a first principle evaluation of the equipment. These models include the effect that reduced voltage at the Motor Control Center and elevated containment temperatures have on the performance of a dc powered MOV. The model also accounts for motor torque and speed changes that result from the heatup of the motor during the stroke. These models are part of the Motor- Operated Valve In Site Test Assessment (MISTA) software which is capable of independently evaluating the ability of dc-powered motoroperated gate valves to achieve flow isolation and to meet required stroke times under design-basis conditions. This paper presents an overview of the dc motor model and the actuator efficiency under load model. The paper then compares the analytical results from the models with the results of actual dc motor and actuator testing, including comparisons of the effect reduced voltage, elevated containment temperature, and motor heating during the stroke have on an MOV.

  17. DC Motor Load Analysis and Cooling Consideration to Optimise the Power Consumption- Case Study

    Directory of Open Access Journals (Sweden)

    Mr. K.G. Bante

    2013-06-01

    Full Text Available The need of energy conservation is the increased requirement of all industries as the cost of the energy increasing day by day. DC motors have been the workhorse of variable speed drives in the continuous steel rolling mills for many years. DC motors in the steel rolling mills are usually separately ventilated by providing air blower, heat exchanger and water. Cooling air is circulated inside the motor by air blower. Water circulates through the heat exchanger and cools the air. Energy consumption by the air blower plays a vital role in optimizing the energy consumption. This article indicates that the loading pattern of the DC motor should decide the control strategy for effective and efficient cooling arrangement.

  18. Scanning slit for HIE-ISOLDE: vibrations test (linear motion actuator from UHV design, MAXON brushless motor, speed = 10 mm/s)

    CERN Document Server

    Bravin, E; Sosa, A

    2014-01-01

    This report summarizes the results of a series of tests performed on the prototype HIE-ISOLDE diagnostic box (HIE-DB) regarding the vibrations and drifts in the transverse position of the scanning blade while moving in and out of beam path in the HIE-ISOLDE short box prototype. To monitor the transverse position of the blade, a series of 0.1 mm diameter holes were drilled on it and their positions were tracked with an optical system. The linear motion actuator was acquired from UHV design (model LSM38-150-SS), and it was adapted to be driven by a brushless EC motor from MAXON. The speed of the scanning blade during the tests was 10 mm/s. The transverse movement of the slit in the direction perpendicular to the movement was lower than 40 m, and is dominated by the displacement of the contact point of the applied force on the lead-screw. An offset on the slit position was observed while changing the direction of movement of the blade, its amplitude being of the order of 30 m. The amplitudes of the displacements...

  19. 无刷双馈电机电动状态下的能量分析%Power flow in brushless doubly-fed machine under motor operation

    Institute of Scientific and Technical Information of China (English)

    章玮

    2000-01-01

    无刷双馈电机作为一种新颖电机,无论是电机结构还是运行特性都有其特殊性。从电机稳态模型出发,分析了无刷双馈电机作为调速电动机在各种不同转速范围内定、转子间的能量传递关系,为无刷双馈电机的绕组容量设计以及变频器容量的选择方面提供依据。%As a new type motor,Brushless Double-Fed Machine(BDFM) has shown specialties in its structure and operational characteristic.Based on theN steady-state model of the BDFM,this paper discusses the power flow in the two stator windings and the rotor circuit under different speed ranges.The results obtained offer the theoretical basis for machine's de-sign and selecting the capacity of converter.

  20. Sensorless DC motor drive via optimal observer-based servo control

    Energy Technology Data Exchange (ETDEWEB)

    Thananchai Keephakpreeda [Thammasat University (Thailand). School of Industrial and Mechanical Engineering

    2002-07-01

    This paper proposes an alternative design of a sensorless DC motor drive via optimal observer-based servo control. Without the speed sensor, the extended Luenberger observer is implemented to estimate the rotor speed of the DC motor in the presence of the disturbance torque. With this knowledge of the speed estimated from the observer, the servo state-feedback controller can drive such a rotor speed to follow the desired one. The stability and performance of the DC drive system can be guaranteed by the optimal control which minimizes the H{sub 2} norm of the closed-loop feedback control and observer system. The simulation and experimental studies are demonstrated for the effectiveness of the proposed control methodology in a practical approach for the sensorless DC drive. (author)

  1. Electric motors for robotics; Moteurs electriques pour la robotique

    Energy Technology Data Exchange (ETDEWEB)

    Maye, P.

    2001-07-01

    Thanks to the recent progresses made in the domain of small motors and of their electronic control systems, the electrical actuators have become preponderant among the actuators used in robotics and automation. This book presents the knowledge necessary to deal with the domain of electric actuators. The three main types of motors encountered today are described with their characteristics: DC motors, brush-less DC motors and step-by-step motors. The mechanisms and their influence on the choice of a motor, the speed and position servo-controls and the overheating phenomena are detailed. An important part is devoted to the electronic circuits, responsible for a large part of the performances of actuators. Content: general considerations; principle and technology of DC motors; operation regimes; electronic power supplies; brush-less DC motors and their power supplies; step-by-step motors and their power supplies; servomechanisms; motors overheating; measurement of motors parameters; speed and position control; appendixes; dictionary, bibliography, index. (J.S.)

  2. Research of Compound Control for DC Motor System Based on Global Sliding Mode Disturbance Observer

    Directory of Open Access Journals (Sweden)

    He Zhang

    2014-01-01

    Full Text Available Aiming at the problems of modeling errors, parameter variations, and load moment disturbances in DC motor control system, one global sliding mode disturbance observer (GSMDO is proposed based on the global sliding mode (GSM control theory. The output of GSMDO is used as the disturbance compensation in control system, which can improve the robust performance of DC motor control system. Based on the designed GSMDO in inner loop, one compound controller, composed of a feedback controller and a feedforward controller, is proposed in order to realize the position tracking of DC motor system. The gains of feedback controller are obtained by means of linear quadratic regulator (LQR optimal control theory. Simulation results present that the proposed control scheme possesses better tracking properties and stronger robustness against modeling errors, parameter variations, and friction moment disturbances. Moreover, its structure is simple; therefore it is easy to be implemented in engineering.

  3. Design of direct drive robot using indigenously developed d.c. torque motors

    Science.gov (United States)

    Athani, Vithal V.

    The range of high-performance torque motors, which were indigenously developed for use in multistage satellite launch vehicles, is described. The main features that set dc torque motors apart from dc servomotors are: high peak torque, power, and current over short periods of operation, low speed of operation, obviating the need for gearing, high torque/inertia and torque/weight ratios, and high figure of merit = torque/sq rt watt ratio. The dc torque motors are eminently suited to high-performance applications requiring high torque at low speed of operation, such as aircraft and missile control surface actuation, control of multistage satellite launch vehicles, certain computer peripherals like magnetic tape transports and hard disk drives, and robotics, CNC systems, and machine tool control.

  4. Neuro-Fuzzy DC Motor Speed Control Using Particle Swarm Optimization

    Directory of Open Access Journals (Sweden)

    Boumediene ALLAOUA

    2009-12-01

    Full Text Available This paper presents an application of Adaptive Neuro-Fuzzy Inference System (ANFIS control for DC motor speed optimized with swarm collective intelligence. First, the controller is designed according to Fuzzy rules such that the systems are fundamentally robust. Secondly, an adaptive Neuro-Fuzzy controller of the DC motor speed is then designed and simulated; the ANFIS has the advantage of expert knowledge of the Fuzzy inference system and the learning capability of neural networks. Finally, the ANFIS is optimized by Swarm Intelligence. Digital simulation results demonstrate that the deigned ANFIS-Swarm speed controller realize a good dynamic behavior of the DC motor, a perfect speed tracking with no overshoot, give better performance and high robustness than those obtained by the ANFIS alone.

  5. A lightweight electronically commutated dc motor for electric passenger vehicles

    Science.gov (United States)

    Echolds, E. F.; Walla, P. S.

    1982-09-01

    A functional model breadboard converter and a rare-earth-cobalt, permanent magnet motor; as well as an engineering model converter and PM motor suitable for vehicle installations were developed and tested. The converter and motor achieved an 88% peak efficiency, a maximum output of 26 kW at 26,000 rpm, and a continuous rating of 15 kW. The system also generated power to the source during braking, with a demonstrated peak power available at the converter terminals of approximately 26 kW at 88% efficiency. Major conclusions include: (1) the SAE J227a(D) driving cycle efficiency for the converter/motor is 86% to 88% when energy available for recovery at the converter terminals is included; (2) the converter initial cost is approximately five times that of the permanent magnet motor, but can be reduced by means of LSI logic and integrated liquid cooled semiconductor packages; and (3) an electronically commutated motor with a liquid cooled converter will operate reliably without service or maintenance for the life of a passenger vehicle.

  6. A lightweight electronically commutated dc motor for electric passenger vehicles

    Science.gov (United States)

    Echolds, E. F.; Walla, P. S.

    1982-01-01

    A functional model breadboard converter and a rare-earth-cobalt, permanent magnet motor; as well as an engineering model converter and PM motor suitable for vehicle installations were developed and tested. The converter and motor achieved an 88% peak efficiency, a maximum output of 26 kW at 26,000 rpm, and a continuous rating of 15 kW. The system also generated power to the source during braking, with a demonstrated peak power available at the converter terminals of approximately 26 kW at 88% efficiency. Major conclusions include: (1) the SAE J227a(D) driving cycle efficiency for the converter/motor is 86% to 88% when energy available for recovery at the converter terminals is included; (2) the converter initial cost is approximately five times that of the permanent magnet motor, but can be reduced by means of LSI logic and integrated liquid cooled semiconductor packages; and (3) an electronically commutated motor with a liquid cooled converter will operate reliably without service or maintenance for the life of a passenger vehicle.

  7. Sensorless load torque estimation and passivity based control of buck converter fed DC motor.

    Science.gov (United States)

    Kumar, S Ganesh; Thilagar, S Hosimin

    2015-01-01

    Passivity based control of DC motor in sensorless configuration is proposed in this paper. Exact tracking error dynamics passive output feedback control is used for stabilizing the speed of Buck converter fed DC motor under various load torques such as constant type, fan type, propeller type, and unknown load torques. Under load conditions, sensorless online algebraic approach is proposed, and it is compared with sensorless reduced order observer approach. The former produces better response in estimating the load torque. Sensitivity analysis is also performed to select the appropriate control variables. Simulation and experimental results fully confirm the superiority of the proposed approach suggested in this paper.

  8. Incorporation of fractional-order dynamics into an existing PI/PID DC motor control loop.

    Science.gov (United States)

    Tepljakov, Aleksei; Gonzalez, Emmanuel A; Petlenkov, Eduard; Belikov, Juri; Monje, Concepción A; Petráš, Ivo

    2016-01-01

    The problem of changing the dynamics of an existing DC motor control system without the need of making internal changes is considered in the paper. In particular, this paper presents a method for incorporating fractional-order dynamics in an existing DC motor control system with internal PI or PID controller, through the addition of an external controller into the system and by tapping its original input and output signals. Experimental results based on the control of a real test plant from MATLAB/Simulink environment are presented, indicating the validity of the proposed approach.

  9. Efficiency of particle swarm optimization applied on fuzzy logic DC motor speed control

    Directory of Open Access Journals (Sweden)

    Allaoua Boumediene

    2008-01-01

    Full Text Available This paper presents the application of Fuzzy Logic for DC motor speed control using Particle Swarm Optimization (PSO. Firstly, the controller designed according to Fuzzy Logic rules is such that the systems are fundamentally robust. Secondly, the Fuzzy Logic controller (FLC used earlier was optimized with PSO so as to obtain optimal adjustment of the membership functions only. Finally, the FLC is completely optimized by Swarm Intelligence Algorithms. Digital simulation results demonstrate that in comparison with the FLC the designed FLC-PSO speed controller obtains better dynamic behavior and superior performance of the DC motor, as well as perfect speed tracking with no overshoot.

  10. Sensorless Load Torque Estimation and Passivity Based Control of Buck Converter Fed DC Motor

    Directory of Open Access Journals (Sweden)

    S. Ganesh Kumar

    2015-01-01

    Full Text Available Passivity based control of DC motor in sensorless configuration is proposed in this paper. Exact tracking error dynamics passive output feedback control is used for stabilizing the speed of Buck converter fed DC motor under various load torques such as constant type, fan type, propeller type, and unknown load torques. Under load conditions, sensorless online algebraic approach is proposed, and it is compared with sensorless reduced order observer approach. The former produces better response in estimating the load torque. Sensitivity analysis is also performed to select the appropriate control variables. Simulation and experimental results fully confirm the superiority of the proposed approach suggested in this paper.

  11. Noise Source Identification of Small Fan-BLDC Motor System for Refrigerators

    OpenAIRE

    2006-01-01

    Noise levels in household appliances are increasingly attracting attention from manufacturers and customers. Legislation is becoming more severe on acceptable noise levels and low noise is a major marketing point for many products. The latest trend in the refrigerator manufacturing industry is to use brushless DC (BLDC) motors instead of induction motors in order to reduce energy consumption and noise radiation. However, cogging torque from BLDC motor is an und...

  12. Development of High-Temperature Superconducting DC Motor for Automobiles

    Science.gov (United States)

    Oyama, Hitoshi; Shinzato, Tsuyoshi

    In recent years, electrification of automobiles is in progress. Following the advent of passenger electric vehicles, large size commercial vehicles with electric drive are also being developed. One of the problems in the development of large electric vehicles is the heavy weight which leads to short driving distances. Energy saving by the use of high-efficiency motors will be a solution. The authors have developed a prototype electric vehicle equipped with a high-temperature superconducting (HTS) motor and a refrigerator. The test results showed that the motor has torque of 136 Nm and an output of 30 kW, and the prototype vehicle obtains the maximum speed of 80 km/h.

  13. Controlling the Dc-link Midpoint Potential in a Six-phase Motor-drive

    DEFF Research Database (Denmark)

    Bendixen, Flemming Buus; Blaabjerg, Frede; Rasmussen, Peter Omand;

    2004-01-01

    Traditionally electrical motors have three phases, but multiphase motors have shown to improve motor performance and efficiency. This paper concentrates about the control algorithm for a six-phase induction motor with third harmonic current injection. The problem is that typically a seventh...... inverter branch and filter inductances is needed for stabilizing the midpoint potential of the series connected dc-capacitor link. A new control strategy that pre-calculates the allowed voltage ripple and controls the motor voltage accordingly (using two standard three phase inverter modules) is suggested....... With this new control strategy the seventh branch and an inductance can be saved. It also opens the possibility to use two standard three-phase inverters to supply the six-phase motor. An experimental setup is build and the theory is verified in the test case. The proposed control strategy works satisfactory...

  14. A Novel Method for Sensorless Speed Detection of Brushed DC Motors

    Directory of Open Access Journals (Sweden)

    Ernesto Vazquez-Sanchez

    2016-12-01

    Full Text Available Many motor applications require accurate speed measurement. For brushed dc motors, speed can be measured with conventional observers or sensorless observers. Sensorless observers have the advantage of not requiring any external devices to be attached to the motor. Instead, voltage and/or current are measured and used to estimate the speed. The sensorless observers are usually divided into two groups: those based on the dynamic model, and those based on the ripple component. This paper proposes a method that measures the current of brushed dc motors and analyses the position of its spectral components. From these spectral components, the method estimates the motor speed. Three tests, performed each with the speeds ranging from 2000 to 3000 rpm either at constant-speed, at slowly changing speeds, or at rapidly changing speeds, showed that the average error was below 1 rpm and that the deviation error was below 1.5 rpm. The proposed method: (i is a novel method that is not based on either the dynamic model or on the ripple component; (ii requires only the measurement of the current for the speed estimation; (iii can be used for brushed dc (direct current motors with a large number of coils; and (iv achieves a low error in the speed estimation.

  15. STATE SPACE MODELING AND SIMULATION OF SENSORLESS PERMANENT MAGNET BLDC MOTOR

    Directory of Open Access Journals (Sweden)

    N. MURUGANANTHAM

    2010-10-01

    Full Text Available Brushless DC (BLDC motor simulation can be simply implemented with the required control scheme using specialized simulink built-in tools and block sets such as simpower systems toolbox. But it requires powerful processor requirements, large random access memory and long simulation time. To overcome these drawbacks this paper presents a state space modeling, simulation and control of permanent magnet brushless DC motor. By reading the instantaneous position of the rotor as an output, different variables of the motor can be controlled without the need of any external sensors or position detection techniques. Simulink is utilized with the assistance of MATLAB to give a very flexible and reliable simulation. With state space model representation, the motor performance can be analyzed for variation of motor parameters.

  16. Low-Cost Undergraduate Control Systems Experiments Using Microcontroller-Based Control of a DC Motor

    Science.gov (United States)

    Gunasekaran, M.; Potluri, R.

    2012-01-01

    This paper presents low-cost experiments for a control systems laboratory module that is worth one and a third credits. The experiments are organized around the microcontroller-based control of a permanent magnet dc motor. The experimental setups were built in-house. Except for the operating system, the software used is primarily freeware or free…

  17. DC Motor and Generalized DC Motor Attributed to Self-Controlling Frequency%自控变频为属性的直流电动机及广义直流电动机

    Institute of Scientific and Technical Information of China (English)

    童钟良

    2014-01-01

    The self-control behavior is the basic character of DC motor and generalized DC motor. The generalized DC motor is the new development of DC motor. The attribute of a DC motor may be reflected by self-controlled frequency. The measure of self-controlled frequency is also applied in the motor body of generalized DC motor. By mathematical deduction, it was explained that there was non-existence of the self-control behavior for synchronous motor in running. The motor system which is composed of motor body and self-controlled attachment is able to carry out self-control to the frequency and phases of the armature current, so that the performance of DC motor appears in generalized DC motor.%自控行为是直流电动机及广义直流电动机的基本特征。广义直流电动机是直流电动机的同类型电机,也是直流电动机的新发展。自控变频反映直流电动机的属性,广义直流电动机是对电机本体采取自控变频措施的电动机。依托数学推理阐明了同步电动机本无自控行为,以电机本体为主件与自控电气配件组成的机电一体化电机,对电枢电流的频率及相位实施自控,从而产生气隙磁场钳位,使广义直流电动机呈直流电动机的性能特征。

  18. Hybrid I-f starting and observer-based Ssnsorless control of single-phase BLDC-PM motor drives

    DEFF Research Database (Denmark)

    Iepure, Liviu Ioan; Boldea, Ion; Blaabjerg, Frede

    2012-01-01

    A motion sensorless control for single-phase permanent magnet brushless dc motor based on an I-f starting sequence and a real-time permanent magnet flux estimation is proposed here. The special calculation for extracting the position and speed used here implies the generating of an orthogonal flux...

  19. Imitation of the characteristics of the wind turbine based on DC motor

    Institute of Scientific and Technical Information of China (English)

    LIU Qihui; HE Yikang; ZHAO Rende

    2007-01-01

    This paper analyzed the operating principles and power and torque characteristics of the wind turbine and the direct current motor(DC motor),and investigated the operating characteristics of the wind turbine compared to that of the DC motor.The torque imitation scheme,which has good performance and high feasibility,together with the whole wind turbine imitation system,was provided.The wind turbine imitation system includes not only a hardware platform composed of PC,data-collection board and thyristor-based velocity-regulator,but also monitor software of wind turbine imitation.The experimental results of different occasions verify the correctness and feasibility of the wind turbine imitation scheme proposed in this paper,which provided a valid idea for wind turbine imitation and investigation of wind power generation techniques in the laboratory.

  20. Particle and Kalman filtering for state estimation and control of DC motors.

    Science.gov (United States)

    Rigatos, Gerasimos G

    2009-01-01

    State estimation is a major problem in industrial systems. To this end, Gaussian and nonparametric filters have been developed. In this paper the Kalman Filter, which assumes Gaussian measurement noise, is compared to the Particle Filter, which does not make any assumption on the measurement noise distribution. As a case study the estimation of the state vector of a DC motor is used. The reconstructed state vector is used in a feedback control loop to generate the control input of the DC motor. In simulation tests it was observed that for a large number of particles the Particle Filter could succeed in accurately estimating the motor's state vector, but at the same time it required higher computational effort.