Parameter Design and Performance Simulation for Power System of Parallel Hybrid Electric Vehicle

Aiming at the advantages of low-emission and fuel-efficient with hybrid electric vehicle(HEV),the original model vehicle is refit into parallel hybrid electric vehicle(PHEV),and its power system parameters are designed.The dynamic performance,fuel economy and battery state of charge(SOC) are simulated in the NEDC typical driving cycle by vehicle simulation software ADVISOR.The comparisons between the simulation results of two models show that the modified hybrid vehicle is better than the original model vehicle on fuel economy,the dynamic performance is basically unchanged,and the charge-discharge characteristics of battery achieve a balance on driving cycle,so the design of power system parameters is reasonable.