A Novel Position Observer for SPMSM Sensorless Control Based on Second-Order Generalized Integrators

Affiliation of Author(s):自动化学院

Journal:Diangong Jishu Xuebao

Abstract:In high frequency pulsating current injection based sensorless control of surface-mounted permanent magnet synchronous motors (SPMSM), high order filters are usually utilized to restrain the error brought by step signals. This paper proposed a novel rotor position observer using second-order generalized integrators (SOGI) instead of filters. The observer was made up of two SOGIs in series. The first SOGI extracted the high frequency signal and the second SOGI obtained the error information. With the proposed observer, the signal delay and computational burden are reduced. The differential feed-forward control was utilized to lower the influence of step signal to this observer in dynamic process. The experimental results based on a RT-LAB platform verify the feasibility of the designed observer. © 2017, The editorial office of Transaction of China Electrotechnical Society. All right reserved.

ISSN No.:1000-6753

Translation or Not:no

Date of Publication:2017-12-10

Co-author:刘兵,倪天恒,Zhou, Rong,Bai, Wenjie

Correspondence Author:Bo Zhou

Date of Publication:2017-12-10