Drive Control Strategy Simulation Research of Plug-in Hybrid Electric Vehicle Based on Matlab/Simulink Platform

Aiming at the features of Plug-in Hybrid Electric Vehicles (PHEV) which can be charged through the network, the moving process of starting the engine was analyzed; the vehicle energy management strategy was formulated by combing of pure electric control strategy and economic model control strategy. Using genetic algorithm to optimize the upper and lower fluctuation limit values of state of charge (SOC) in charge sustain (CS) mode and engine optimal curve. The Simulation evaluation of PHEV energy consumption economy was conducted. The results indicate that control strategy keep the engine operation points within the peak efficiency region and reduce the energy consumption economy by 28.4%, 35.8%, 26.6 under New European Driving Cycle(NEDC), Urban Dynamometer Driving Schedule (UDDS) and Highway Fuel Economy Test (HWFET) cycle conditions, compared with prototype vehicle.