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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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

Received: 10 September 2012 Published: 25 March 2014

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TM315

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	Zhu Jingwei
	Diao Liang
	Ren Baozhu
	Shao Pingbo

Cite this article:

Zhu Jingwei,Diao Liang,Ren Baozhu等. Analysis and Control of Short-Circuit Fault in a Fault-Tolerant Permanent Magnet Motor Drive with Redundancy[J]. Transactions of China Electrotechnical Society, 2013, 28(3): 80-86.

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

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