基于滑模观测器的永磁同步电机无位置传感器矢量控制系统设计

Design of Sensorless Vector Control System for Permanent Magnet Synchronous Motor Based on Sliding Mode Observer

基于滑模观测器,结合锁相环、矢量控制、空间矢量脉宽调制等设计了一个永磁同步电机无位置传感器矢量控制系统,并在MATLAB/Simulink环境下构建仿真模型。仿真试验结果表明,该系统可较准确地跟踪转子位置和速度,并对转速和负载变化具有较好的自适应能力和鲁棒性,能实现永磁同步电机无位置传感器矢量控制的要求。

In this paper,based on sliding mode observer,combined with phase-locked loop,vector control and spacevector pulse width modulation,a sensorless vector control system for permanent magnet synchronous motor is designed.The simulation model is constructed in MATLAB/Simulink environment.The simulation results show that the system can track the rotor position and speed more accurately,and has better adaptability and robustness to the speed and load changes.It can realize the requirement of the sensorless vector control of permanent magnet synchronous motor.