双电机驱动电动汽车再生制动控制研究

Research on Regenerative Braking Control of Dual Motor Driven Electric Vehicle

为提高纯电动汽车再生制动过程中的能量回收率,文章以某一前、后双电机驱动的纯电动汽车为对象,针对纯电动汽车再生制动过程中机械制动力与电机制动力的分配进行研究,合理的分配前、后轴上机械制动力与电机制动力各自的比例,并引入相关影响因子对电机制动力进行修正,制定了经济性控制策略,最后用Simulink和Cruise软件进行联合仿真。结果表明,采用经济性控制策略能够提高制动能量回收率,且在车速波动更为频繁的城市工况下更有利于电动汽车回收制动能量。

To improve the braking energy recovery rate of the pure electric vehicles in the process of regenerative braking,this paper takes a dual motor drive the pure electric vehicles as the object,in view of the pure electric vehicle regenerative braking during the process of mechanical braking force and to study the mechanism of electric power distribution,reasonable distribution of mechanical braking force on the front and rear axle and the mechanism of electric power in proportion to the respective,and introducing relevant impact factors to modify mechanism of electric power,then the optimal economic control strategy is developed,finally using Simulink and Cruise joint simulation software.The results show that the optimal economic control strategy can improve the braking energy recovery,and is more beneficial to the recovery of braking energy in electric vehicles under the urban conditions where the speed fluctuation is more frequent.