A split three phase induction motor for battery charging application

This paper presents an integrated high power battery charging topology by incorporating a split three phase induction motor for electric vehicle. In charging/vehicle to grid mode, stator winding is used as an inductive filter between grid and converter. During this operation, the rotor of machine is kept in stationary position as rotating magnetic field is cancelled out due to built-in nature of split phase stator winding. Therefore, mechanical locking is not required. Proposed configuration works under unity power factor operation. Through the reconfiguration of stator winding, same motor is used as three phase induction motor for traction purpose. Simulation results for proposed concept are provided for both charging and vehicle to grid mode.