At last, a third harmonic inserted windings five-phase PMSM is designed, hardware platform of its control system is constructed, software code based on FPGA is Pmsm thesis, and the vector control method proposed in this study is validated.
Theoretical analysis and simulation results show that the design has stronger robustness and Pmsm thesis control precision. Thirdly, the PWM schemes for two different structures are investigated. PMSM is of small size, low dissipation and high efficiency, as energy saving and environmental protection is valued today, the research to it appear more necessary.
On the analysis of the working principle and characteristics of PMSM, its mathematical model is constructed. This paper Pmsm thesis the basic structure and performance of STM32F chip, and gives the software and hardware design of speed regulation system which use the chip as the main control chip.
Though the three-phase drive system will be used for a very long time due to the economical of regularization and standardization of manufacture, its traditional dominate status has been challenged in many applications.
The research objects of this paper are position sensorless PMSM and its control system. In order to realize the control of speed regulation system, it is very important to obtain the rotor positions and speed signals.
The paper researches and designs the vector control system which is based on sliding mode variable structure control mode.
These two control methods are compared and simulated in Simulink. Download Dissertation Abstract In recent years, with the rapid development of power electronic technology, microelectronics technology, new motor control theory and rare earth permanent magnetic materials, the permanent magnet synchronous motor PMSM has got rapid popularization and application.
Secondly, two different vector control methods are proposed for two different structure five-phase PMSM control systems based on the former analysis of MMF harmonics and math models, a developed control method is proposed for the sinusoidal windings five-phase PMSM, and a method of inserting third harmonic current to enhance torque density of multiphase motor control system is proposed for the third harmonic inserted windings five-phase PMSM, the amplitude and phase qualification is given out.
Therefore, how to realize the control of speed regulation system without installing position sensors became the focus. All of above lay the theoretical foundation for studying the method of multiphase motors control. Firstly, the MMF time-space harmonics distribution of symmetrical multiphase windings is analyzed, the qualification for creating rotary MMF in multiphase windings is indicated; math modeling of five-phase PMSM with sinusoidal windings and third harmonic inserted windings are then developed, the Generalized Park Transformation is derived and its physics meaning is clearly indicated, then Park Equation is built in rotary frame.
The traditional PMSM installed position sensors such as Hall sensors on through the rotor shaft to obtain the rotor positions and speed signals, but these sensors increased the system cost, reduced the system reliability and durability.
Therefore, the study of multi-phase motors has been concentrated by more and more people. In the case of low voltage high power and high availability drive applications, Multi-phase motors have showed more advantages over traditional three-phase motors, such as motors used for water circulation in nuclear power station, drive system of hybrid vehicles, air navigation and space faring, ship electrical propulsion.
The experimental results indicate that with third harmonic current and third harmonic rotor magnetic field inserted, the torque density of five-phase motor is improved, the motor drive system can get high power Pmsm thesis ability in low voltage application cases.
Through detailed research of the technology and waveform generation mechanism of space vector pulse width modulation SVPWM and the characteristics of sliding mode variable structure control method, a design method is put forward which applies sliding mode variable structure principle in vector control system of position sensorless PMSM.
This method can measure motor current, voltage, etc, use the sliding mode variable structure to estimate rotor position, extract position and velocity information of the rotor.Simulation of PMSM Vector Control System Based on Matlab/Simulink LIU Ting-ting, TAN Yu, WU Gang, WANG Shu-mao Collage of Engineering China Agriculture University, CAU.
Simulation study of Conventional Control versus MTPA-Based for PMSM Control Abstract− in this paper, an analytical analysis for the permanent magnet synchronous motor (PMSM) control strategies will be provided and verified using the MATLAB. Despite their different structures, all three-phase permanent magnet motors (BLDC, PMSM or PMAC) are driven by a PWM-modulated three-phase bridge (three half bridges) so as to supply the motor with variable frequency and amplitude three-phase voltages and currents.
MATLAB Function Based Approach to FOC of PMSM Drive. Omer Cihan Kivanc and Salih Baris Ozturk. Department of Electrical and Electronics Engineering. MODELLING, SIMULATION AND ANALYSIS OF LOW-COST DIRECT TORQUE CONTROL OF PMSM USING HALL-EFFECT SENSORS A Thesis by SALIH BARIS OZTURK Submitted to the Office of Graduate Studies of.
Abstract Author Lars Dautermann Title Designing a Three Phase Inverter for a Permanent Magnet Synchronous Motor Number of Pages 51 pages + 7 appendices.Download