To enhance the vehicle energy efficiency of four-wheel-drive electric vehicles,a strategy for dynamic torque distribution between the front and rear motors based on the optimal efficiency of the motor system is put forward.The vehicle simulation model is constructed in CRUISE,and the torque distribution strategy model is established in Simulink.The distribution of front and rear motor torques and power con-sumption under various vehicle speeds and different wheel-end torques are calculated through co-simula-tion.Through the comparative analysis of the calculation results of multiple torque distribution strategies and the comparison between the measured data of the test vehicle on the test site and the simulation re-sults,it is verified that the proposed dynamic torque distribution strategy is feasible.Additionally,the fea-sibility of enhancing the motor efficiency and reducing the vehicle power consumption after adopting the disengagement device in the low-torque stage of the four-wheel-drive vehicle model is discussed.
关键词
四驱电动汽车/电机效率/联合仿真/转矩动态分配策略
Key words
Four-wheel-drive electric vehicle/Motor efficiency/Co-simulation/Dynamic torque distribu-tion strategy
维普
万方数据