复合电源电动汽车功率分配与再生制动研究

Research on Power Distribution and Regenerative Braking Force of Hybrid Electric Vehicle

针对复合电源电动汽车的功率及再生制动力的分配问题,(1)在UDDS道路工况下,分别采用双模糊控制和模糊-逻辑控制分配复合电源的功率。研究结果表明,采用双模糊控制的整体效果优于模糊-逻辑控制。(2)基于制动强度、车速、超级电容的SOC值和ECE法规等影响因素建立一种新的再生制动力的分配模型并制定相应的模糊控制器分配车轮的制动力。结果表明:改进后的制动力分配方式使得电池的SOC值在单个UDDS工况下比改进前增加0.01;超级电容的SOC值增加0.2;电池受到的电流冲击最大减小了15A。

Aiming at the distribution of power and regenerative braking force of hybrid electric vehicles,(1)Under the UDDS road condition,the power of the composite power supply is distributed by using double fuzzy control and fuzzy-logic control respectively.The results show that the overall effect of double fuzzy control is better than that of fuzzy-logic control.(2)A new distribution model of regenerative braking force is established based on braking strength,vehicle speed,SOC value of supercapacitor,ECE regulation etc,and the corresponding fuzzy controller was developed to allocate the braking force of the wheel.The results show that the improved braking force distribution mode increases the SOC value of the battery by 0.01 under a single UDDS condition compared with that before the improvement;The SOC value of the supercapacitor is increased by 0.2;The shock of current on the battery is reduced by 15A at most.