A Novel Position Observer for SPMSM Sensorless Control Based on Second-Order Generalized Integrators
Liu Bing1, Zhou Bo1, Ni Tianheng1, Zhou Rong2, Bai Wenjie2
1. Jiangsu Key Laboratory of New Energy Generation and Power Conversion Nanjing University of Aeronautics and Astronautics Nanjing211106 China; 2. Nanjing Entry-Exit Inspection and Quarantine Bureau Nanjing 211106 China
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.
刘兵, 周波, 倪天恒, 周融, 柏文杰. 基于广义二阶积分器的表贴式永磁同步电机低速转子位置检测方法[J]. 电工技术学报, 2017, 32(23): 23-33.
Liu Bing, Zhou Bo, Ni Tianheng, Zhou Rong, Bai Wenjie. A Novel Position Observer for SPMSM Sensorless Control Based on Second-Order Generalized Integrators. Transactions of China Electrotechnical Society, 2017, 32(23): 23-33.
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2017, Vol. 32 
