CHARGING OF ELECTRIC VEHICLES BATTERY USING BIDIRECTIONAL CONVERTER

In this system the single phase ac supplied to load. The non-linear load generates harmonics in the input signal. Enhanced phase locked loop (EPLL) provides sinusoidal current from distorted waveform. The charger is connected through this supply for charging the EV battery. The charger has two stage (a) 1- Øbidirectional AC-DC converter (b) three-level DC-DC buck boost converter. The AC-DC converter provides DC-link voltage to 3-level buck boost converter. The electric vehicles battery is charged in buck mode for grid-to-vehicle application and discharge in boost mode for vehicle-to-grid application. This integration of bidirectional ac-dc converter with the proposed three-level bidirectional dc-dc converter provide path for the flow of power to determines the state of charge (SOC) of EV batteries for charging mode.