SVPWM-Based Fault-Tolerant Control Strategy under Two-Phase Open-Circuit Fault of Five-Phase Permanent-Magnet Synchronous Motor
Liu Guohai1,2, Song Chengyan1,2, Xu Liang1,2, Du Kangkang1,2
1.School of Electrical and Information Engineering Jiangsu University Zhenjiang 212013 China;
2.Jiangsu Key Laboratory of Drive and Intelligent Control for Electric Vehicle Zhenjiang 212013 China
To deal with the two-phase open-circuit fault of five-phase permanent-magnet synchronous motor (PMSM), this paper proposes an effective fault-tolerant control strategy based on space vector pulse width modulation (SVPWM). The proposed SVPWM-based fault-tolerant control strategy is achieved by the division of six sectors and the reconfiguration of six equal nonzero voltage vectors, which is similar to the control of three-phase PMSM under normal condition. Hence, it is quickly computed and easily realized. In addition, the proposed control strategy can reduce the torque ripple caused by the open-circuit fault in stator windings while ensuring the average torque, improve the running performance of the motor under fault condition, so as to enhance the reliability of the variable speed drive system. Simulation and experimental results show that the fault-tolerant control strategy can achieve high quality operation of the five-phase PMSM drive system under two-phase open-circuit fault.
刘国海, 宋成炎, 徐亮, 杜康康. 基于SVPWM的五相永磁同步电机两相开路故障容错控制策略[J]. 电工技术学报, 2019, 34(1): 23-32.
Liu Guohai, Song Chengyan, Xu Liang, Du Kangkang. SVPWM-Based Fault-Tolerant Control Strategy under Two-Phase Open-Circuit Fault of Five-Phase Permanent-Magnet Synchronous Motor. Transactions of China Electrotechnical Society, 2019, 34(1): 23-32.
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2019, Vol. 34 
