Based on the previous research results and a large amount of literature, this paper introduces the current situation and development trend of electric vehicle motors. By comparing with other speed control systems, the advantages and disadvantages of the switched reluctance motor speed control system are analyzed and explained. The development direction and application prospects of the switched reluctance motor are comprehensively summarized, and the four components and operation of the unswitched reluctance motor speed control system are described. Starting from the analysis of the performance of the SR motor, a linear simulation model of the switched reluctance motor is established under Matlab/Simulink, and a detailed simulation analysis and research on the model is carried out. The nonlinear models of various unswitched reluctance motors are compared and analyzed, and a simplified nonlinear inductance model is designed on this basis. The simulation results show that this method can simply and accurately fit the performance of the motor and achieve good results. A nonlinear model based on fuzzy neural network is also established in the article, and the three methods are compared and analyzed. The optimal opening and closing angle of the motor is determined in the simulation. On this basis, current chopping control, angle position control, variable amplitude current chopping control and segmented double closed-loop PI control are realized. The simulation results show that it realizes the normal operation of the motor, suppresses the motor torque pulsation well, and effectively reduces the noise. The article also implements a simple torque distribution function and designs a torque distribution controller to effectively suppress torque pulsation. Finally, the paper implements the design of a four-phase motor controller, using a dedicated DSP motor control chip and making full use of the resources of this chip to design a power drive circuit for a four-phase motor based on an intelligent power module IPM. It also designs peripheral circuits such as position detection and current detection, and performs software analysis and programming on the system. This lays a solid theoretical foundation for its future use as a drive system in electric vehicles.
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