永磁容错电机的直接转矩控制策略

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Abstract According to the property of six-phase fault tolerant permanent magnet motor (FTPMM) and its drive topology, this paper proposes a deep research on the distribution rule of the voltage space vectors, fixed on their selection principle, and suggests the flux and torque estimation observers. The influence of integrated space voltage vector on the flux and torque in the normal and fault state is analyzed in detail, and the sectors and selection table of the switching voltage vectors are designed too, so that the direct torque control(DTC) strategy with fault tolerance is established in this paper. Through the winding open-circuit and short-circuit fault experiments of a 750W six-phase FTPMM and its control system, it is indicated that the speed and active power basically keep the same in the fault state. The results prove the correctness and feasibility of the proposed strategy, which is used in high reliability of aviation electric fuel pump to lay the foundation.

Key words： FTPMM estimation observers voltage space vector DTC fault tolerance

Received: 06 September 2012 Published: 17 June 2014

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TM351

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	Hao Zhenyang
	Hu Yuwen
	Shen Tianmin

Cite this article:

Hao Zhenyang,Hu Yuwen,Shen Tianmin. Director Torque Control Strategy of Fault Tolerant Permanent Magnet Motors[J]. Transactions of China Electrotechnical Society, 2014, 29(3): 180-188.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I3/180

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