Rotor Position and Speed Estimation of Permanent Magnet Synchronous Motor Based on Wideband Synchronous Fundamental- Frequency Extraction Filter
Zhang Chunjuan1, Wang Huizhen1, Liu Weifeng1, Fu Zirui2
1. College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing 211106 China; 2. Shanghai Electro-Mechanical Engineering Institute Shanghai 201109 China
Abstract：The non-ideal factors, such as the inherent chattering of sliding mode observer (SMO), the delay of control algorithm, and the dead-time effect, and so on, will produce harmonic errors of position estimation, which become the main factors affecting the accuracy of rotor position estimation. To improve the performance of the surface permanent magnet synchronous motor (SPMSM), a wideband synchronous fundamental-frequency extraction filter is proposed to extract the fundamental wave signal of the estimated back EMF. Then, a novel signal processing method combing wideband synchronous fundamental frequency extraction filter-frequency locked loop (WSFEF-FLL) is applied, and the application of FLL ensures the tracking frequency of the WSFEF adaptive. Using the WSFEF- FLL-PLL in the SMO based position estimator, the harmonics of the back EMF can be effectively eliminated, which improves the accuracy and dynamic performance of rotor position estimation. Simulation and experiment verify the feasibility and effectiveness of the proposed method.
章春娟, 王慧贞, 刘伟峰, 傅子锐. 基于宽频带同步基频提取滤波器的永磁同步电机转子位置与转速估计[J]. 电工技术学报, 2022, 37(4): 882-891.
Zhang Chunjuan, Wang Huizhen, Liu Weifeng, Fu Zirui. Rotor Position and Speed Estimation of Permanent Magnet Synchronous Motor Based on Wideband Synchronous Fundamental- Frequency Extraction Filter. Transactions of China Electrotechnical Society, 2022, 37(4): 882-891.
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2022, Vol. 37 
