基于新型高频注入法的表贴式永磁同步电机转子初始位置检测方法

A novel initial position detecting strategy of sensorless control for the surface mounted permanentmagnet synchronous machines(SPMSM) which combines the virtual high frequency pulsating injection method with the carrier frequency component method was proposed. In order to improve the sensorlesscontrol performance, this method adds the virtual high frequency rotation frame on the basis of the traditional high frequency(HF) pulsating injection method. At the same time, the carrier frequency component signals wereutilized to detect magnetic pole. The simulation and experimental results show that the proposed method does not require PI regulation, which can be achieved by project easily.The novel magnetic pole judgment method effectively improves the detecting performance of sensorless control in the long algorithm execution time, complex process, etc.The experimental results verified the correctness of the strategy.