A Compensation Method for Rotor Position Estimation of PMSM Based on Pulsating High Frequency Injection

This paper presents a compensation method for rotor position estimation of PMSM Based on pulsating high frequency signal injection. In this method, the phase delay caused by the filter is compensated at the beginning of motor starting to reduce the estimation error of rotor position and increase the starting ability with load. Finally, the performance and results of this method are shown.