Initial Position Identification of PMSM with Filterless High Frequency Pulse Signal Injection Method
Yu Anbo1, Liu Li2, Kan Zhizhong1, Zhang Chunjiang1
1. Key Laboratory of Power Electronics for Energy Conservation and Drive Control of Hebei Province Yanshan University Qinhuangdao 066004 China; 2. Shougang Zhixin Qian'an Electromagnetic Material Co. Ltd Tangshan 064400 China
Abstract：A method is proposed to identify the rotor initial angle using high-frequency pulse signal injection into a permanent magnet synchronous motor (PMSM). This method, briefly called filterless high frequency pulse signal injection, is an improvement on the traditional identification of the rotor initial angle. Firstly, the function of rotor initial angle error is calculated from stator current high-frequency response instead of using a low-pass filter, then, the initial rotor angle is obtained through a phase-locked loop. The method of identifying the rotor polarity is also modified using the saturation effect of the magnetic circuit, which improves the polarity identification of the rotor magnet. Finally, the proposed scheme has been verified by experiments on an 16kW interior permanent magnet synchronous motor platform.
于安博, 刘利, 阚志忠, 张纯江. 高频脉振信号注入永磁同步电机无滤波器初始位置辨识方法[J]. 电工技术学报, 2021, 36(4): 801-809.
Yu Anbo, Liu Li, Kan Zhizhong, Zhang Chunjiang. Initial Position Identification of PMSM with Filterless High Frequency Pulse Signal Injection Method. Transactions of China Electrotechnical Society, 2021, 36(4): 801-809.
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2021, Vol. 36 
