Design Of Switched Reluctance Motor Drive System And The Realized In Electric Vehicles

In an increasingly serious global environmental issues today, the development of green transport has become an important issue. As Electric vehicle has the features of portability, non-pollution and low-noise, it becomes an ideal vehicle. Switched Reluctance Motor(SRM) has simple structure, flexible control and high reliability. It can work efficiently within a relatively wide rang of speed. SRM also has firm and durable structure. It suits for the application under adverse conditions. All of these characteristics determine that SRM is fit for the control motor of vehicle.This paper researches a motor driving system for electric vehicles based on 12/10 structure switched reluctance motor. The system adopts the TMS320F2812 DSP and EPM7128S-based CPLD to build digital controllers, implements electric motoring and power generation for electric motor.This paper outlines the development of electric vehicle and switched reluctance motor, then analyses its working principle and mathematical model, finally proposes CCC control method and APC control method corresponding to SRM start, electrical and power generation. Based on this, I make a hardware experimental platform for electric vehicles SRM driving system and a driving system control software based on DSP and CPLD. According to electric vehicle running in the actual situation, I make experiments for electric and power generation separately. Finally I get the experimental data and waveforms, analyze the results and obtain the experimental results.Experimental results show that the switched reluctance motor for electric vehicles are feasible in practice and has a good prospect.