Optimal traction control for EV utilizing fast torque response of electric motor

It is well-known that the separately-wound DC motor has effective torque (current) reduction characteristics in response to rapid increase of the rotational speed of the motor. This characteristic has been utilized in adhesion control of electric locomotives with DC motor. In this paper, we have proposed a new slip prevention method for EVs, utilizing this characteristic and have made experiments with the hardware slip simulator "motor-generator setup" and our new vehicle "UOT CADWELL EV" which is equipped with BLDC motors. The experimental results verified the effectiveness of our proposed method.