模糊控制的电动车复合电源能量管理研究

Study on hybrid power energy management of electric vehicles based on fuzzy control

针对由蓄电池与超级电容器组成的电动汽车复合电源,为减缓蓄电池功率变化,提出了模糊逻辑控制能量管理策略,建立了蓄电池—超级电容复合电源系统仿真模型,在ADVISOR中进行仿真,得到了复合电源最佳荷电状态初始值。结果表明:对比于逻辑门限控制,模糊逻辑控制的蓄电池功率变化缓慢,减轻了蓄电池的负担。

In order to slow down change of battery power, a novel energy management strategy based on fuzzy logic control is developed for hybrid power system including a battery bank and an ultra-capacitor bank. Models for hybrid power system is developed and simulated in ADVISOR, and the optimal initial state of charge for hybrid power is obtained. The results show that compared with the logic threshold strategy, the fuzzy logic control can decrease the change rate of battery power and reduce the battery power loads.