短路容错控制在多相无轴承永磁同步电机中的可行性分析

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Abstract As a key technology of multi-phase PM bearingless motors, a feasible fault-tolerant control system is vital for improving their safety and robustness. In this paper, the control model with different short-circuited faulty phases and the short-circuited current expression are established. Moreover, its corresponding discriminant condition is proposed based on third-order nonzero minors or the row rank of a certain matrix. As an example, the feasibility of the fault-tolerant control with arbitrary single, double or triple short-circuited phase(s) for a six-phase PM bearingless motor is discussed in detail. The fault-tolerant control system with short-circuited cases is shown. Simulation results from finite-element analysis are presented to demonstrate the operation of the motor under the proposed fault tolerant control. A principle prototype is developed and the experimental results are also provided to further demonstrate the analysis.

Key words： Fault tolerance magnetic levitation feasibility permanent magnet motors bearingless motors short-circuited multi-phase

Received: 12 October 2010 Published: 20 March 2014

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TM351

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	Wang Xiaolin
	Ren Xinyu
	Deng Zhiquan
	Liao Qixin

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Wang Xiaolin,Ren Xinyu,Deng Zhiquan等. Feasibility of Fault-Tolerant Control of Multi-Phase Permanent Magnetic Bearingless Motors with Short-Circuited Phases[J]. Transactions of China Electrotechnical Society, 2012, 27(3): 105-118.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I3/105

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