Study on the Braking Energy Recovery Control Strategy of Electric Vehicle with Dual-Motor Coupling Powertrain
摘要
Braking energy recovery of electric vehicle can enhance the energy using efficiency and enlarge the vehicle driving range. In this paper, it is proposed that the braking energy recovery control strategy of the electric vehicle with dual-motor coupling powertrain system. Firstly, the configuration and working principle of the dual-motor driving system is introduced, and its simulation model is developed using MATLAB/Simulink, which including the motor model, battery model and braking system model. Secondly, the front and rear braking force of the electric vehicle is distributed based on I curve and ECE regulation. Then the regenerative braking force distribution strategy is proposed based on fuzzy control algorithm. To validate the effectiveness of the proposed braking energy recovery strategy, the braking energy recovery control strategy is simulated under NEDC, FTP75 and CLTC driving cycles. The simulation results show that the recovery rates of the braking energy were 13.36%, 18.49% and 22.53% respectively. This study provided theoretical support for regenerative braking force control for electric vehicle.