四相开关磁阻电机功率变换器故障检测技术

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Abstract Power converter is an important part of the switched reluctance motor drives system, and also one of the weakest parts of the whole system. Longterm operation in fault is bound to damage the entire system. Based on different behavior patterns of the power converter supply current and each phase currentunder normal and fault operation, fault diagnosis eigenvalues are given, and combined with on-off states of power elements to make a comprehensive analysis. This paper presents a new asymmetric half-bridge power converter fault detection method for switched reluctance motor. Simulation and experimental results show that the detection method can quickly and accurately diagnose the fault phase, determine fault type, identify faulty component at low and high speed operation, save the number of the current sensor, and has high reliability.

Key words： Fault detection identify faulty element asymmetric half-bridge structure power converter switched reluctance motor(SRM)

Received: 05 February 2013 Published: 16 June 2014

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TM315

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	Articles by authors
	Xiao Li
	Sun Hexu
	Dong Yan
	Zheng Yi
	Gao Feng

Cite this article:

Xiao Li,Sun Hexu,Dong Yan等. Fault Diagnosis Strategy of Power Converter for Four-Phase <br/>Switched Reluctance Motor[J]. Transactions of China Electrotechnical Society, 2014, 29(1): 156-164.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I1/156

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