Holistic approach in developing propulsion for urban electric vehicles

In order to develop an outstanding electric vehicle (EV) we have to use all the advantages which are offered by the transition to electric propulsion system. Our concept involves direct drive (DD) propulsion system with four high specific torque inwheel electric motors, improved aerodynamics of a vehicle, weight reduction and optimized hybrid power sources involving a low power high energy primary source and a high power lower energy secondary source. Optimization of propulsion system parameters has been performed in order to obtain satisfying driving and economic performance for a standard city driving cycle.