Design And Simulation Of Power System For Hybrid Electric Vehicle

The environmental pollution and defieieney of petroleum resourees have been the two serious problems against the sustainable development of the automotive industry. At present, the studying of reducing automobile energy consumption and environmental protection are on behalf of the focus and direction for automotive technologies'research and development. Hybrid Electric Vehicle(HEV) is a new style vehicle, which combines the excellent performance of conventional vehicle with low mission and high efficiency of Electric Vehicle. HEV will be the most feasible clean vehicle in the near future.Performances of HEV, in terms of driving, fuel consumption, and exhaust emission, strongly depend on the coordination of the drivetrain and their control strategy. Using the reasonable system structure and the control algorithm optimizes work area, HEV can achieve the low oil consumption and improved emission. In this paper, the classification and associated characteristics of HEV are firstly analyzed. And then, determind the layout pattern of drive system, and accomplished the parts selection and parameters matching of drive system, it modeled the electric motor and accumulator cell in MATLAB/simulink according to the parameters. At last, the whole vehicle power train model is built under the advisor2002 environment, the HEV's acceleration performance and climbing performance in the pure motor driving and hybrid driving mode are simulated, and carries out simulation calculation of designed HEV model based on the following two typical cycle, CYC_UDDS and CYC₁015 cycle, acquires the results of acceleration time of vehicle, oil consume per hundred kilometer of each circular working condition,points of engine,change of battery SOC, which proves the fuel consumption of the designed HEV of this paper has obvious advancement, based on ensuring dynamical quality, and proves the rationality of the HEV system design.The study of this paper would be helpful to reduce the period of design for HEVs and supply the reference for drivetrain design and vehicle's performance evaluation.