纯电动汽车再生制动控制策略研究

Research on Regenerative Braking Control Strategy of Pure Electric Vehicle

为提高纯电动汽车制动能量回收率,提出了一种基于模糊控制的机电复合再生制动控制策略。依据车辆制动力学理论及车辆制动状态,进行制动力分配;设计了以总制动力、电池SOC值和车速为输入量,电机制动力占前轴制动力的比例K为输出量的模糊控制器。在CRUISE软件中的NEDC工况下进行仿真分析,结果表明,该控制策略可有效的回收制动能量。

In order to improve the braking energy recovery rate for pure electric vehicle,a mechanical and electrical composite regenerative braking control strategy based on fuzzy control is proposed.According to the vehicle braking dynamics theory and vehicle braking state to distribute braking force;A fuzzy controller with total braking power,battery SOC value and vehicle velocity is designed,and the proportion of electric mechanism power to the front axle braking power K is the output.The simulation analysis under NEDC operating conditions in CRUISE show that the control strategy can effectively recover braking energy.