Abstract:Traditionally, the current chopping control (CCC) was applied for starting control and the angle position control (APC) was applied in mediumhigh speed operation state for the switched reluctance motor (SRM). However, in electric vehicle (EV) application field, SRM was usually controlled with traditional pulse width modulation (PWM) control strategy. A dynamic CCC based starting scheme and a hybrid PWM and APC control strategy based mediumhigh speed operation control scheme were developed, which could ensure smooth starting operation, instantaneous speedup and stable operation under different load cases. Meanwhile, the most important controller protection parts such as the overcurrent protection and motor stalling protection were also optimized, and thus the system reliability would be highly improved. To verify the validity of the control strategies and the protection methods, experiments were implemented with a 12/8 structure SRM and the STM32F103 microchip based power controller. The results showed that the motor could start up quickly and smoothly, and the current fault and stalling fault could be diagnosed immediately with the proposed methods.