基于SVPWM的五相永磁同步电机两相开路故障容错控制策略

doi:10.19595/j.cnki.1000-6753.tces.L80193

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Abstract

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.

Key words： Five-phase permanent-magnet synchronous motor space vector pulse width modulation fault-tolerant control open-circuit fault

Received: 28 June 2018 Published: 10 January 2019

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TM351

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	Liu Guohai
	Song Chengyan
	Xu Liang
	Du Kangkang

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Liu Guohai,Song Chengyan,Xu Liang等. SVPWM-Based Fault-Tolerant Control Strategy under Two-Phase Open-Circuit Fault of Five-Phase Permanent-Magnet Synchronous Motor[J]. Transactions of China Electrotechnical Society, 2019, 34(1): 23-32.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L80193 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I1/23

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