融合地形信息的车载复合电源控制方法研究

地形信息对复合电源能量分配具有较大影响,忽略地形信息的能量分配控制效果难以达到最优。搭建了动力电池-超级电容复合电源模型,通过实验对模型参数进行了辨识并验证了模型的有效性;融合路径高程信息,构建了结合道路坡度的车辆能量需求模型;运用模糊控制理论,开发了一种考虑地形信息的具有电池基准功率调节特征的复合电源能量分配控制方法。仿真结果表明:融合地形信息的控制方法能够降低电池峰值电流,在美国城市驾驶循环工况(UDDS)下使超级电容的使用时间延长了26.5%,制动回收能量提高了5.5%。

Research on control method of vehicle hybrid energy storage system based on terrain information

The terrain information has a great influence on the energy distribution of the hybrid energy storage system(HESS),and it is difficult to achieve the optimal energy distribution control effect without considering the terrain information.A HESS model including power battery and supercapacitor was built,the model parameters were identified through experiments,and the validity of the model was verified.By integrating the path elevation information,the vehicle energy demand model combined with the slope of the road was constructed.Using the fuzzy control theory,a HESS energy distribution control method with battery reference power adjustment characteristics was developed by considering terrain information.The simulation results show that the control method with considering the terrain information can reduce the peak current of the battery.Under the UDDS condition,the use time of the supercapacitor extends by 26.5%,and the braking recovery energy increases by 5.5%.