Research on Control Strategy of Hybridpower System for Vehicle

Abstract

In this paper, the structure and working principle of the hybrid power system of pure electric vehicle are introduced, and the fuzzy control strategy is applied to the management of the vehicle. The dynamic simulation model of the hybrid power system is established based on the MATLAB/SIMULINK platform, and the power allocation control strategy is designed based on the premise of the simple operation, the maximum protection of the battery and the improvement of the energy recovery efficiency. At last, the simulation results of two control strategies for the application of the hybrid power supply in the whole vehicle are analyzed by using the European test cycle (NEDC).The simulation results show that the fuzzy control strategy can give full play to the characteristics of the composite power supply, and better distribution of the power between the lithium battery and the super capacitor, and optimize the working efficiency of them.