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Direct modeling of switched reluctance machine by coupled field-circuit method

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2 Author(s)
Longya Xu ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA ; Ruckstadter, E.

Transient analysis of a switched reluctance machine (SRM) system is complicated by its unconventional nonsinusoidal operation and highly nonlinear characteristics. The analysis, however, is essential not only for optimizing the SRM magnetic structure but also for proper control of the associated power electronic circuit. In this paper, a direct modeling method for analysis of a SRM system including the power electronic converter, control and the nonlinear magnetic field of the SRM is established. The finite element method is used to model the nonlinear magnetic field, and is coupled to the circuit model of the SRM overall system. Assumptions of current density in FEA and various types of flux-current characteristics in circuit analysis are eliminated. With simultaneous computation over the entire system, the computer model provides abundant information regarding the SRM system. Experimental results are presented to prove the accuracy of the model

Published in:

Energy Conversion, IEEE Transactions on  (Volume:10 ,  Issue: 3 )