中文摘要：

目前电动车实用化的最大障碍是续驶里程短,而缓解此障碍的方法之一是采用再生制动.针对以超级电容为储能装置的电动车,为满足其制动性能要求,通过分析再生制动系统的工作原理,应用换路原理建立了其再生制动系统模型.基于DC/DC变换器状态空间平均的建模理论,利用超级电容端电压和电动机转速估计电动车再生制动过程中电动机的制动电流,提出了保持车辆电制动减速度平稳的能量回收控制策略.搭建了再生制动试验台进行试验,验证了系统结构的可行性和控制策略的有效性.结果表明：所采用的控制策略能将制动电流控制在目标值附近并且比较稳定,再生制动系统能量回收率高;再生制动能量回收控制策略试验与仿真结果一致,能够满足工程应用要求.

英文摘要：

The regenerative braking is currently used to relieve the biggest obstacle of short driving distance for the industrial application of electric vehicle（EV）.In order to meet the braking performance requirement of electric vehicle equipped with ultra-capacitor,based on the regenerative braking system working principle,a regenerative braking system model was built by exchange principle.Based on DC /DC converter modeling theory of state space average,an energy recovery control strategy was proposed to realize stable deceleration of vehicle braking,and the braking current of motor was calculated by the ultra-capacitor voltage and the speed of motor during EV regenerative braking process.A regenerative braking test bench was built to verify the feasibility of the system structure and the validity of the control strategy.The results show that the braking current is in the vicinity of the target value and relatively stable by the proposed control strategy,and the regenerative braking system has high energy recovery rate.The experimental results of regenerative braking energy recovery and control strategy are consistent with the simulation results,which illuminates that the proposed control strategy can satisfy the requirement of engineering application.