Current optimization for a multi-phase machine under an open circuit phase fault condition

Zheng, L. and Fletcher, J.E. and Williams, B.W. (2006) Current optimization for a multi-phase machine under an open circuit phase fault condition. In: 3rd IET International Conference on Power Electronics, Machines and Drives, 2006-04-04 - 2006-04-06.

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Abstract

In this paper, a practical method based on a symmetrical component transformation is proposed to analyze and optimize the current for a multi-phase machine under open-circuit phase conditions. Two kinds of current optimization are considered: stator copper loss minimization and inverter peak current minimization. Application of the method is described for a five-phase machine. The fault conditions investigated are single, double, and triple open-circuit phase faults. Optimized solutions for four-, six-, and seven-phase machines, with one open-circuit phase, are also presented