Abstract
Electric Vehicle (EV) battery chargers which uses the conventional PFC (power factor correction) circuits have the limitation of efficiency because of its high conduction loss which occur at the input of DBR (diode bridge rectifier). To solve this issue, a bridgeless isolated single ended primary inductance converter (SEPIC) is used. Throughout the charging process, the input current operates with a power factor of one. Conduction losses are drastically reduced by the removal of the DBR and current conduction due to fewer devices. The overall performance of proposed system is shown by means of various modes of operation, simulation and experimental process. EV batteries are typically charged in constant current or voltage mode, which increases the charger’s overall efficiency.
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