基于MRAS和SVPWM永磁同步电动机无位置传感器控制

摘要

According to the dynamic coupling of the permanent magnet synchronous motor, a model reference adaptive identification algorithm was presented to estimate the rotor position. Permanent magnet syschronous motor (PMSM) sensorless speed control system adopted the space vector PWM strategies to reduce the harmonic voltage inverter and torque ripple. Simulation results show that the proposed algorithm is able to track accurate rotor positions of PMSM, that the system has good robustness, and that it is a practical method for permanent magnet synchronous motor sensorless control.%依据永磁同步电动机的动态耦合关系,提出一种模型参考自适应辨识算法来估算转子的位置.永磁同步电动机无位置传感器的调速系统采用空间矢量脉宽调制策略以减小逆变器输出电压的谐波成分,降低转矩脉动.仿真结果证实了模型参考自适应辨识算法对转子位置跟踪准确,系统具有很强的鲁棒性,是实现永磁司步电动机无位置传感器控制的一种实用方法.