Design and control of switched reluctance motor drive for electric vehicles

Switched reluctance motor (SRM) has the features of large starting torque, wide speed range and high reliability, which are appropriate for electric vehicles (EVs). A three-phase 12/8 pole SRM is designed for EVs application. The dynamic simulation model of SRM is built in Matlab/Simulink based on the flux linkage and torque characteristics. The EV simulation model is built combining SRM dynamic simulation model with vehicle dynamics equations by the forward simulation algorithm. Fix angle current chopping control (FA-CCC) is adopted in constant torque area, and adaptive variable angle current chopping control (AVA-CCC) is proposed in constant power area to widen the constant power speed range. Simulation analysis and experiment test results have been presented to demonstrate the performance of the proposed control strategies.