Analysis and Compensation of Position Estimation Error in SPMSM Sensor-less Control Based on High Frequency Pulsating Voltage Injection

Affiliation of Author(s):自动化学院

Journal:Zhongguo Dianji Gongcheng Xuebao

Abstract:Position estimation precision is of great importance in sensor-less SPMSM control based on high frequency pulsating voltage injection. Firstly, the position estimation errors caused by some non-ideal factors such as motor parameter asymmetry and current detection error were theoretically analyzed. Expressions of the errors were given. Simulations verified the above analysis. Secondly, a novel position observer was proposed in which all-pass filters were used to extract high frequency signal and to eliminate harmonic error. Parameter adaptive control and error feed-forward control were adopted to improve the dynamic performance of the position observer. Lastly, the proposed method was verified by experiments. © 2018 Chin. Soc. for Elec. Eng.

ISSN No.:0258-8013

Translation or Not:no

Date of Publication:2018-07-20

Co-author:刘兵

Correspondence Author:Bo Zhou

Date of Publication:2018-07-20