The normal operation of surface mounted permanent magnet synchronous motor(SPMSM)control system requires accurate acquisition of rotor phase,and commonly used incremental encoders cannot accurately obtain the initial phase of the rotor during system initialization.To solve this problem,traditional methods locate the rotor by applying a current vector of known magnitude and direction,butdifferent degrees of reversal may oc-cur during the positioning process.In order to avoid rotor misperat-ion,this paper proposes to use high-frequency signal injection method to detect the initial phase of the rotor.The experimental results show that this method can accurately detect the initial phase of the SPMSM rotor under no-load conditions.
关键词
信号注入法/无位置传感器技术/表贴式永磁同步电机/饱和凸极性/初始位置辨识
Key words
Signal injection method/No position sensor technology/Surface mounted permanent magnet syn-chronous motor/Saturated convex polarity/Initial position identification
维普
万方数据