Hybrid Fuel Cell/Battery Power System Energy Management by Using Fuzzy Logic Control for Vehicle Application

In this work, a fuzzy logic control-based energy management strategy is proposed for a fuel cell (FC)/battery hybrid electric vehicle. The model of the proposed hybrid power system is developed in the environment of MATLAB/Simulink. An energy management according to fuzzy rules is designed to regulate FC working in the high efficiency area and protect it from suffering rapidly changing of load power. The reference power of FC is determined in real-time by accumulating its power increment which performs FC power changing from one operating point to another within the high efficiency area limiting by the maximum power slope. The proposed control effect is compared with a simple logic control strategy in New Europe Driving Cycle (NEDC).