On-Board Integreted Charger for Electric Vehicle Based on Split Three Phase Insuction Motor

Abstract

This paper describes on-board battery charger for electric vehicle based on split three-phase induction motor. Fast battery charger is obligatory to improve the charging rate of an electric vehicle. Electric vehicle will be attractive then and then only when charging time of EV is in permissible limit. Typical on-board charger for electric vehicle limits the high power because of hardware and cost concern. In on-board battery charger reduction of weight, volume, space, and cost can be obtained by integrating charger component with traction circuitry. Traction component of EV not engaged during charging time so it is possible to use them in charging circuit. Thus while charging, the stator winding of traction motor used as the filter inductor at the front end of AC to DC converter. Here split three-phase induction motor having an inbuilt capability to cancel out rotating magnetic field at the time of charging, by rearranging the stator winding of the induction motor. The same motor can be use for charging and traction process. The input filter in high power rectifier keeps line current distortion within the allowable limit. Simulation results for the proposed concept are provided for comparison of AC to DC converter with and without filter inductor and charging of battery from AC grid.