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Study on Pole Position Detection Technique of PMSM

Author: GuoQingFeng
Tutor: LiTieCai；YangGuiJie
School: Harbin Institute of Technology
Course: Motor and electrical
Keywords: Permanent magnet synchronous motor Pole position detection Sliding mode observer Buffeting
CLC: TM341
Type: Master's thesis
Year: 2007
Downloads: 604
Quote: 4
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Abstract


Permanent magnet synchronous motor with high power density, high efficiency, simple structure and good maintainability, etc., are widely used in high-performance speed control system. Traditional permanent magnet synchronous motor drive control system through some mechanical sensor (resolver, encoder, etc.) to detect the position and speed of the motor pole, in order to achieve high-performance motor control. The presence of these mechanical sensors not only increase the cost of the system, but also reduces the reliability of the system, thus limiting the application of permanent magnet synchronous motor in some special occasions. Papers from the perspective of promoting the permanent magnet synchronous motor system to the economy, civil direction, the main research of two low-cost, high reliability, simple maintenance of permanent magnet synchronous motor magnetic pole position detection technology: permanent switch-based Hall magnetic synchronous motor magnetic pole position detection technology and permanent magnet synchronous motor based on sliding mode observer pole position detection technology. Firstly, the paper analyzes the mathematical model of permanent magnet synchronous motor vector control strategy, based on research-based locking type switch Hall magnetic pole position detection and sliding mode observer-based magnetic pole position detection of two low-cost permanent magnet synchronous motor pole position detection programs. Next, the magnetic pole position detection technology based on two-phase and quadrature-lock type switch Hall detailed analysis and estimation errors that may appear in this method, a careful study, a consideration of the motor acceleration error compensation measures to improve the magnetic pole position estimation accuracy. Design and development based on the Hall of quasi-lock type switch position sensorless permanent magnet synchronous motor drive controller, the magnetic pole position detection technology based on switch Hall validated by experiment, the experimental results verify the validity of the method. Finally, the pole position of the permanent magnet synchronous motor based on sliding mode observer, the speed estimation principles and detailed explanations were proposed based on the FIR filter method, based on the saturation function method based on extended Kalman filter method buffeting suppression measures to improve the chattering problem inherent in the sliding mode observer to the motor position, velocity estimation adverse effects. Based on sliding mode observer permanent magnet synchronous motor sensorless vector control system simulation model to TMS320LF2407A DSP as the core of the permanent magnet synchronous motor drive control platform based on sliding mode observer pole position detection technology and buffeting disincentives simulation and experimental validation of experimental results and simulation results are obtained to verify the correctness and feasibility of the study design sliding mode observer.

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CLC: > Industrial Technology > Electrotechnical > Motor > AC motor > Synchronous motor
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