Abstract：A novel sensorless control method of SPMSM based on high frequency (HF) current signal injection is proposed in this paper. A HF sinusoidal current signal is superimposed into the estimated d-axis, and the rotor position can be demodulated after q-axis voltage is regulated, which is relative to error angle. Ultimately sensorless control can be achieved. Theoretical analysis, simulation and experiment validation are carried out. The results indicate that the rotor position and speed can be obtained exactly at low and zero speed. The approach ensures good dynamic and static performance. Compared to the pulsating high frequency voltage signal injection method, the proposed method in this paper is simpler in structure and more stable.
刘颖, 周波, 冯瑛, 赵承亮. 基于脉振高频电流注入SPMSM低速无位置传感器控制[J]. 电工技术学报, 2012, 27(7): 139-145.
Liu Ying, Zhou Bo, Feng Ying, Zhao Chengliang. Sensorless Control of SPMSM Based on High Frequency Current Signal Injection in the Direct Axis at Low and Zero Speed. Transactions of China Electrotechnical Society, 2012, 27(7): 139-145.
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