Modeling and Sliding Mode DTC of an EV with Four In-Wheel Induction Motors Drive

In this study, a new direct torque control strategy based on sliding mode control (SM-DTC) combined with the space vector pulse width modulation is proposed for an electric vehicle with four in-wheel drive (4WDEV). The proposed traction system consists of four 15Kw induction motors (IMs) mounted in the wheels that driven rear and front wheels. The speed of each in-wheel induction motors drive is calculated independently during the turning with an electronic differential system. Where four PI speed controllers are used to distributes the reference torque to each in-wheel IMs according to the requirements of the driving. To show the effectiveness of the proposed new control strategy SMDTC combined with SVM on the traction system by 4WDEV. The electric vehicle has been tested in different road constraints: straight road, sloping road and the curved road to the right and left using the Matlab / Simulink environment. The results of the simulation show the stability of the vehicle during the driving cycle.