一种基于直流母线电流传感器的永磁同步电机全速域精确位置估计方法

An accurate full-speed sensorless control of permanent magnet synchronous motors (PMSMs) with a single dc-bus current sensor is attractive for low-cost or compact motor drives and has not been solved completely. This article utilizes a recent proposed quasi edge aligned pulsewidth modulation (QEAPWM) method in the whole speed range to realize an accurate position estimation for PMSMs. The proposed...