氢燃料电池汽车能量管理系统模糊控制仿真研究

Simulation of energy management system of hydrogen fuel cell vehicle based on fuzzy control

针对氢燃料电池经济性和使用寿命等问题,利用AVL-Cruise和Matlab-Simulink软件搭建了复合电源系统整车模型;基于中国典型城市公交工况(CCBC)确定整车功率需求,采取功率跟随控制策略和模糊控制策略对整车经济性进行仿真。仿真结果表明:在锂离子动力电池SOC处于0.6~0.8时,模糊控制策略相较于功率跟随控制策略,氢燃料电池氢气消耗量降低7.8%,氢燃料电池在最佳效率区间的工作时间增加44.61%。该控制策略对延长氢燃料电池系统使用寿命和降低氢气消耗具有指导意义。

A whole vehicle model of composite power supply system is built by adopting AVL-Cruise and Matlab-Simulink to address issues concerning hydrogen fuel cell including its economic efficiency and lifespan;the power demand of whole vehicle is determined based on CCBC condition, and the economic efficiency of the whole vehicle is simulated by using power follow-up control strategy and fuzzy control strategy.Simulation result shows that if the Li-ion power battery SOC is 0.6~0.8, for fuzzy control strategy, hydrogen consumption of hydrogen fuel cell reduces 7.8%, and the working time of hydrogen fuel battery in the best efficiency interval adds 44.61% when compared with power follow-up control strategy.This control strategy has certain instructive meaning for extending system lifespan and reducing the hydrogen consumption of hydrogen fuel cell.