A Dual-Motor EV Powertrain with Torque and Speed Coupling—Design,Matching and Simulation

摘要

In this paper,a dual-motor EV powertrain(DMEP) with speed and torque coupling was designed.In the powertrain,a planetary gear unit couples the speed of main motor(M1) and auxiliary motor(M2).Also,another shaft-fixed gear unit couples the torque of M1 and M2.Thus,the Ml and M2 can operate within their optimal speed and torque regions,and at the same time,can cooperate with each other to deliver their torque and speed to the wheels.The fundamental configuration design,the basic method of parameter matching ancl the vehicle dynamic simulation based on the DMEP were conducted in this paper.