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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摘要

针对五相永磁同步电机（PMSM）发生两相开路故障的情况,提出一种基于空间矢量脉宽调制（SVPWM）技术的容错控制策略。该控制策略通过对六个扇区的划分和六个非零电压矢量的重构来实现参考矢量的合成,同三相PMSM在正常工况下的SVPWM方法相似,计算简单,易于实现。利用该容错控制策略,可以在保证平均转矩的同时,大幅减小由定子绕组开路故障引起的转矩脉动,使五相PMSM在故障状态下的运行性能得到明显改善,有效提高调速系统的可靠性。仿真和实验结果表明采用该容错控制策略能够实现五相PMSM驱动系统在两相开路故障下的高品质运行。

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	刘国海
	宋成炎
	徐亮
	杜康康

关键词 ：五相永磁同步电机, 空间矢量脉宽调制, 容错控制, 开路故障

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

收稿日期: 2018-06-28 出版日期: 2019-01-10

PACS:

TM351

基金资助:

国家自然科学基金（51577084, 51877098）、江苏省高校优势学科项目和江苏省高校自然科学研究重大项目（15KJA470002）资助

通讯作者: 刘国海男,1964年生,教授,博士生导师,研究方向为电动机系统及其控制。 E-mail：ghliu@ujs.edu.cn

作者简介: 宋成炎男,1994年生,硕士研究生,研究方向为永磁电动机控制。E-mail：1045482607@qq.com

引用本文:

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

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