Abstract
Electro-mechanical transmission (EMT) is a transmission pattern of hybrid electric vehicles. This paper analyzes and calculates the required electric power of EMT. The requirement to the hybrid energy storage system of EMT is analyzed and calculated in this paper. Then according to the calculation results, the parameters of hybrid energy storage system consisted of batteries and supercapacitors for EMT are matched. Based on the analysis of required electric power, three fuzzy control strategies for different modes are proposed in this paper. The model of HESS and control block is built based on Matlab/Simulink. Simulation results indicate that the required electric power and energy is satisfied, and the control strategy proposed in this paper is feasible. The supercapacitors play an important role to diminish the impacts on batteries.
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