A vector control strategy using a single current sensor for a three-phase permanent magnet synchronous motor

被引：0

作者：

Xu, Guanda ^{[1
]}

Xiao, Fei ^{[1
]}

Lian, Chuanqiang ^{[1
]}

Liu, Jilong ^{[1
]}

机构：

[1] National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering, Wuhan,430033, China

来源：

Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2022年 / 50卷 / 23期

关键词：

XU Guanda; XIAO Fei; LIAN Chuanqiang; LIU Jilong (National Key Laboratory of Science and Technology on Vessel Integrated Power System; Naval University of Engineering; Wuhan; 430033; China) Abstract: To improve the control performance of a three-phase permanent magnet synchronous motor with a single current sensor; a current reconstruction method based on full-order sliding mode observer and a quasi-proportional resonant regulator is proposed. First; the mathematical model of the full-order sliding mode observer is established in the two-phase stationary coordinate frame with the current and extended back electromotive force as the observed quantities. Then the unknown phase current error is reconstructed using a quasi-proportional resonant (quasi-PR) regulator to obtain the current error information required by the full-order sliding mode observer. Finally; the current information estimated by the observer is used to realize high-performance closed-loop vector control; and the parameter design methods of the observer and quasi-PR regulator are also provided. Compared with the traditional control method using a low-pass filter and a PI regulator; the proposed method is simple to implement and avoids the problems of phase lag and amplitude attenuation caused by the low-pass filter. The ‘hardware-in-the-loop’ real-time simulation results show that the new method reduces the dq-axis current harmonics by 10%~20% under a variety of working conditions; and has higher torque control accuracy and better dynamic performance. This work is supported by the General Program of National Natural Science Foundation of China (No. 52177202). Key words: permanent magnet synchronous motor; single current sensor; full-order sliding mode observer; quasi-proportional resonant regulator; vector control;

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页码：104 / 111