Energy Management Strategy of Four-wheel Drive Hybrid Electric Vehicle Based on ECMS Algorithm

Abstract

In order to improve the fuel economy of four-wheel drive hybrid electric vehicle, equivalent consumption minimum strategy of fuel control for four-wheel drive hybrid electric vehicle is proposed based on the Pontryagin’s minimum principle. The vehicle dynamics model is constructed, and the instantaneous energy management optimization strategy based on equivalent consumption minimum strategy is designed. MATLAB/Simulink simulation platform is used to verify the proposed energy management strategy. The simulation results show that the proposed strategy can realize the energy optimization management of the whole vehicle. Compared with the dynamic programming energy management strategy, the average fuel economy of the strategy is higher by 6.23% under typical operating conditions.