Modelling of switched reluctance motors

Switched reluctance motors (SRM) provide an alternative for low power automobile drives. However, the modeling and design of SRMs are not as mature as other conventional electric machines. This presents an opportunity to combine the generalized electrical machine theory and the finite element analysis in establishing a convenient and accurate model. This paper reports a modeling technique based on this combination. The detailed modeling process, computer simulation and test results are demonstrated in the paper. The modeling and simulation techniques have been applied to the development of the MOSFET converter and its control strategy for a 250 W, 12.8 V SRM for automobiles.