基于改进位置误差信号提取策略的永磁同步电机高频脉振电压注入无位置传感器控制方法

High-frequency (HF) pulsating carrier voltage injection method is widely used in position sensorless control of permanent magnet synchronous motor. In this method, the position error signal (i.e., amplitude of $q$-axis HF carrier current) is extracted by band-pass filter (BPF) and low-pass filter (LPF). However, with the BPF+LPF-based position error signal extraction strategy, position estimation ...