ISSN : 1796-203X
Volume : 4    Issue : 10    Date : October 2009

A Novel Method of Phase Current Compensation for Switched Reluctance Motor System Based
on Finite Element
Haijun Zhang, Jingjun Zhang, and Ruizhen Gao
Page(s): 1064-1071
Full Text:
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Torque ripple is a major problem of switched reluctance motor drive system, which causes
undesirable vibration and acoustic noise. In this paper, a novel method of torque closed-loop and
fuzzy compensation control for the switched reluctance motor drive system based on finite element
model is described. In terms of the simulation results and the special characteristics of static
torquecurrent-angle which are calculated by finite element method, the phase current can be treated
just as the nonlinear function of phase torque. With the proposed control concept, a compensating
signal is added to the phase current, the current shape can vary with the fuzzy control ruler to
minimize the torque ripple. In the end, an example of 8/6 poles switched reluctance motor is
simulated. Simulation results show that the torque ripple coefficient Ti can be reduced about fifty
percent and the total torque also can be advanced, which verifies the effects of the proposed fuzzy
compensation control technique.

Index Terms
switched reluctance motor, torque ripple, phase current compensation, finite element