六相永磁同步电机缺相容错控制

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Abstract In order to realize vector control of the six-phase permanent magnet synchronous machine (PMSM) with one phase failure,optimized currents of the six-phase PMSM containing double Y-connected phase-shift 30° windings with one phase failure are found based on the principle of the constant stator magnetic motive force concerning minimum copper loss.According to the optimized currents,the transformation matrix has been got to establish the mathematical model of the six-phase PMSM with one phase failure in the rotating coordinates.And thus the decoupling vector control method is proposed with one phase failure.Besides,the leakage inductance and the spatial harmonic which affect torque ripple in the fault-tolerant control are analyzed and the corresponding inhibitive method is provided.Experiments are carried out to verify the correctness of the fault-tolerant control for six-phase PMSM.The proposed fault-tolerant control method can reduce the torque ripple effectively and have a better dynamic performance,which ensures the reliability of the drive system.

Key words： Six-phase PMSM fault-tolerant control optimized currents phase failure torque ripple

Received: 09 November 2014 Published: 13 April 2015

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TM315

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	Wang Yongxing
	Wen Xuhui
	Zhao Feng

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Wang Yongxing,Wen Xuhui,Zhao Feng. The Fault-tolerant Control for Six-phase Permanent Magnet Synchronous Machines with One Phase Failure[J]. Transactions of China Electrotechnical Society, 2015, 30(5): 49-58.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I5/49

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