具有冗余特性的永磁容错电机短路故障分析与控制

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摘要为了提高电力推进系统的可靠性, 提出了带冗余特性三相永磁容错电机驱动系统的拓扑结构。为了研究绕组短路故障和逆变器开关短路故障对该驱动系统输出电磁转矩特性的影响, 本文在分析两种短路故障等效电路的基础上, 建立了短路电流和阻碍转矩的数学模型, 通过仿真揭示了逆变器开关短路故障对驱动系统输出转矩特性的影响比绕组短路故障更严重的结论, 并给出通过控制逆变器的开关状态将开关短路故障转化为绕组短路故障的实现方法。针对短路故障降低驱动系统平均输出电磁转矩和增大转矩脉动的问题, 提出了基于稳态数学模型的最佳电流故障控制策略。仿真和实验结果验证了所提出的故障控制策略的有效性。

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	朱景伟
	刁亮
	任宝珠
	邵萍波

关键词 ：永磁电机, 容错, 冗余, 短路故障, 故障控制策略

Abstract：In order to increase the reliability, a three-phase fault-tolerant permanent magnet (FTPM) motor drive with redundancy was proposed. In order to study the effect of winding and switch short-circuit faults on output torque feature of this motor drive, the mathematical models of short-circuit and drag torque were built based on the analysis of the equivalent circuits in two faulty conditions. The conclusion that the switch short-circuit fault in inverters has more negative effect on output torque feature than the winding short-circuit fault was revealed through simulation. Then the realization method to transfer the switch short-circuit fault into winding short-circuit fault was provided. Since the average output torque was reduced and the torque ripple was increased due to the short-circuit fault, an optimal current fault control strategy based on the steady mathematical models was proposed. Both simulation and experimental results validate the effectiveness of the proposed fault control strategy.

Key words： Permanent magnet motor fault-tolerant redundancy short-circuit fault fault control strategy

收稿日期: 2012-09-10 出版日期: 2014-03-25

PACS:

TM315

基金资助:国家自然科学基金(51077007) 和辽宁省科学技术计划(2011224004)资助项目

作者简介: 朱景伟男, 1963年生, 教授, 博士生导师, 研究方向为永磁电机及控制、新能源变换技术等。刁亮男, 1988年生, 硕士研究生, 研究方向为永磁容错电机控制技术。

引用本文:

朱景伟, 刁亮, 任宝珠, 邵萍波. 具有冗余特性的永磁容错电机短路故障分析与控制[J]. 电工技术学报, 2013, 28(3): 80-86. Zhu Jingwei, Diao Liang, Ren Baozhu, Shao Pingbo. Analysis and Control of Short-Circuit Fault in a Fault-Tolerant Permanent Magnet Motor Drive with Redundancy. Transactions of China Electrotechnical Society, 2013, 28(3): 80-86.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2013/V28/I3/80

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