考虑反电动势2次谐波的容错型磁通切换电机开路及短路故障控制策略

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摘要六相永磁容错磁通切换电机（FTFSPMM）继承了传统永磁磁通切换电机的转子结构简单坚固、功率密度高的优点,同时具备故障隔离和抑制短路电流的能力。研究了考虑反电动势2次谐波时一相开路和短路故障时的容错控制策略。开路故障时,考虑到反电动势2次谐波,调节正常相中其中两相的电流幅值和相位使输出转矩平均值不变,转矩脉动为零。一相短路时,根据测量得出的短路电流,考虑电机的电阻和自感计算出短路相的反电动势。将一相短路时的转矩脉动分解为由该相开路引起的转矩缺失和脉动、由该相短路电流作用电感引起的转矩脉动和作用电阻引起的转矩脉动,分别计算用于补偿电感及电阻引起的转矩脉动的电流合成后即为短路时的补偿电流。在原理样机上进行了容错实验,验证了所提容错控制策略的有效性。

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关键词 ：永磁磁通切换电机, 容错, 故障分解, 瞬时功率, 基波补偿

Abstract：Fault tolerant flux switching permanent magnet motor (FTFSPMM) not only maintains relatively high torque density and robust rotor structure, but also possesses excellent fault-tolerant capability. This paper studies fault-tolerant control strategy for the fault-tolerant operation. When the open-circuit fault occurs,taken into account the second harmonic back-EMF, amplitudes and phases of the healthy phases are adjusted to maintain constant instantaneous power and reduce the torque ripple. Under the short-circuit fault, according to the measured short-circuit current, the back-EMF of the fault phase can be obtained considering the inductance and resistance. The torque ripples can be decomposed into those arising from the normal current and those from the short-circuit current that acts on the inductance and resistance of the fault phase. The current of healthy phases can be obtained by synthesizing the current for compensation for torque ripple caused by inductance and resistance. Experiments on the prototype machine verify the fault-tolerant control strategy.

Key words： Fault tolerant flux switching permanent magnet motor fault-tolerant fault decom- position instantaneous power fundamental compensation

收稿日期: 2014-05-15 出版日期: 2016-07-28

PACS:

TM351

基金资助:教育部博士点基金（优先发展领域）（20113218130001）,中国博士后基金（2013M540446）,江苏省博士后基金（1301007B）,江苏省新能源发电与电能变换重点实验室基金（ZAB1100210）和南京航空航天大学青年科技创新基金（NS2014027）资助项目

作者简介: 谢德娥女,1990年生,硕士研究生,研究方向为容错型永磁磁通切换电机。E-mail: 1013807715@qq.com

引用本文:

谢德娥, 王宇, 邓智泉. 考虑反电动势2次谐波的容错型磁通切换电机开路及短路故障控制策略[J]. 电工技术学报, 2016, 31(14): 130-138. Xie De’e, Wang Yu, Deng Zhiquan. Fault-Tolerant Control Strategy for Fault Tolerant Flux-Switching Motor with One Phase Open or Short Considering Second Harmonic Back-Electromotive Force. Transactions of China Electrotechnical Society, 2016, 31(14): 130-138.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I14/130

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