【摘要】 通过分析复合电源功率分配关系,结合复合电源系统设计要求和工作模式,设计基于模糊控制理论的复合电源能量管理控制器。以某电动汽车为原型车,利用Cruise仿真软件搭建采用复合电源系统的电动汽车整车模型,选择NEDC循环工况对复合电源系统参数进行匹配;最后,结合Matlab/Simulink软件中建立的复合电源能量管理控制器对电动汽车进行联合仿真。结果表明,基于模糊控制的复合电源能量管理系统可以有效地分配动力电池和超级电容之间的功率,降低大电流对动力电池的冲击,较单一电源系统性能明显提升。更多还原

【Abstract】 Hybrid power system(HPS) is an effective way to solve the problem of energy performance of pure electric vehicle.Through the analysis of HPS power distribution relationship, combined with the design requirements and work modes, the energy management controller was designed based on fuzzy control theory. Taking a pure electric vehicle as prototype one, pure electric vehicle model with HPS was built by using Cruise simulation software, then based on the NEDC cycle, the parameters of HPS were matched; and finally, combined with the energy management controller of HPS which was developed in Matlab / Simulink software, co-simulation of pure electric vehicle was carried on. The results show that, the energy management system of HPS which is based on the fuzzy control can allocate the power effectively between the battery and ultracapacitor, avoid the big current impact on the battery well, and improve the performance of system significantly, compared with single power supply.更多还原