DESIGN AND ANALYSIS OF LLC RESONANT CONVERTER FOR EV BATTERY CHARGING

Abstract

The rechargeable batteries are changing the way of designing EVs. As the batteries are dc operated that always require dc-dc converter for controlling the stages of power conversion. Developing countries are replacing fuel driven vehicles with traditional, less expensive EVs which are driven by lead acid and lithium-ion batteries. In order to achieve wide input range, minimal switching losses, and stable performance designing of resonant converters are required. This paper suggests effective methodology of battery charging using resonant converter. Resonant power converters have become quite popular recently in applications requiring solid-state transformers, solar PV fed EV (EV) charging infrastructures, etc. Internal combustion (IC) engines have been the only type of engines used in international transportation networks for a very long period. Diesel, gasoline serve as the primary sources of energy for the vehicle engine in conventional transportation propulsion systems. Due to the hazardous CO2 emissions emitted during combustion, the usage of such fuels results in health issues. As a result, recent research and attention have focused heavily on electric and hybrid vehicles (HEV). It is done in order to reduce the hazardous gases emitted during the combustion of these fuels and pave the way to a clean and energy-efficient transportation system. In order to fulfil the requirement of power in the EV transportation, rechargeable batteries are essential in hybrid and electric automobiles.