Driving Research In Hybrid Electric Vehicle Based On Switched Reluctance Motor

Energy crisis and environmental deterioration are two important problems of global development. The design of low energy consumption and low emissions vehicle can abate the pressure of energy absence and improve the quality of environment. Hybrid electric vehicle (HEV) has many advantages, such as low energy consumption, low emissions, long drive distance etc. HEV has become an active research aera. So it is imperative to develop the HEV and the new motor driving control system.The structures and features of the three hybrid power systems were analyzed in this paper. Then a parallel hybrid electric vehicle whose torque was combined with two axises had been chosen, and the Switched Reluctance Motor (SRM) was chose as the driving motor.Based on the research of configuration, principle, mathematic model of SRM, some stimulations of Switched Reluctance Motor control system had been done under the Matlab/Simulink environment. Then a overall control project of the HEV had been designed, and the hybrid control system has been introduced implictly, including the detection of the main parameters of the engine and the hardware and the software of the SRM control system. A parallel hybrid power train based on the CAN bus has been designed, including the interface circuit.A fuzzy torque control strategy (FTCS) for parallel hybrid electric vehicles and its design method were presented based on the double machine communication. It realized the optimal distribution of the driver torque request between the engine and the EM to optimize the overall energy conversion efficiency of the PHEV. Compared with the conventional strategy which uses precise threshold parameters, the proposed FTCS improves fuel economy and maintains battery SOC within its operation range more effectively.