Three-Phase Switched Reluctance Motor Three-Level DTC Driver Design And Algorithm Research

Electric vehicles will become the inevitable direction for the development of the automobile industry in the future.The main driving forms of the future automobiles are dual-drive system and electronic differential control.Switched reluctance motor is a preferred type of dual-drive electric wheel side motor or wheel hub motor because of simple structure,robustness,reliability,and fit for harsh environment etc.The focus of this paper is to provide a control system that meets the electronic differential requirements for the wheel-side switched reluctance drive motor of iSR-1 dual-drive intelligent electric vehicle.The system requires high-performance control of the speed and torque of the drive motor.Based on this,the direct torque control scheme was determined.In order to effectively achieve high-performance direct torque control,based on a detailed analysis of the theory of DTC control,the corresponding control methods and means of implementation are perfected.A three-phase 12/8-pole switched reluctance motor controller with a rated power of 750 W and a peak power of 1.8kW was designed and an experimental system was produced.MCU adopts ARM controller STM32F302R8T6.The drive circuit,rotor position detection circuit,current detection circuit and voltage detection circuit are designed in detail,selected and checked by experiment.The corresponding DTC algorithm is optimized by Matlab simulation.The DTC control method and implementation method in this paper provide technical support for the road test and productization of the iSR-1 dual-driver intelligent technology verification vehicle.