Integration of different modules of an electric vehicle powered by a battery-flywheel storage system during traction operation

This paper presents the integration of different sub-modules in order to simulate the traction control of a two-wheel driven electric vehicle. The vehicle is powered by a Hybrid Energy Storage System (HESS). The HESS is composed of a Li-Ion battery, and a high speed Flywheel Energy Storage (FES). The electrical power generated by the FES highly strongly depends on the power demand (available torque and speed) and on the flywheel torque control method. The Traction Control System (TCS) used is based on a sliding mode slip controller applied to the driven motors and depending on the road surface type and condition. Simulation results show the dynamic behavior of the flywheel according to the desired control, the energy strategy as well as the vehicle kinematic characteristic plots.