On power following energy management strategy based on fuzzy optimization

To implement the reasonable power distribution among each energy unit of the fuel cell hybrid vehicle, a power following energy management strategy based on fuzzy optimization is proposed. The operating mode (Run Mode and Stand Mode) of the fuel cell hybrid power system is decided according to the power required by the drive motor and the state of charge of the auxiliary battery, and the power distribution scheme of the fuel cell and auxiliary battery is optimized by means of fuzzy logic inference. The backward simulation model of the fuel cell hybrid vehicle is established in the MATLAB/SIMULINK simulation environment, and the proposed energy management strategy is verified by simulation according to the urban drive cycle. The simulation results show that the proposed power following energy management strategy based on fuzzy optimization is able to satisfy the power required by the vehicle, reduce the dynamic load of the fuel cell, maintain the state of charge of the auxiliary battery within a certain range, improve the economy of the vehicle and optimize the performance of each energy unit.