부산대학교 도서관

This paper proposes an EV battery charging system that uses a reconfigurable boost converter for charging from solar photovoltaic (PV) and grid power sources. The integration of these sources aims to optimize energy utilization, reduce reliance on non-renewable sources, and enhance overall charging efficiency. The proposed EV battery charging system achieves the coordination between the reconfigurable boost converter, solar PV array, and grid power. By adapting to the dynamic availability of renewable energy and grid, the system operates in two distinct modes to optimize energy utilization and ensure EV battery charging. The first mode utilizes direct transfer of solar energy to the EV battery through the boost converter with extraction of maximum solar PV power. In the second mode, the system dynamically switches to the grid supply for EV charging. This ensures charging of EV batteries when solar power generation reduces below threshold or during night-time. In the second mode, the boost converter is reconfigured to the power factor correction (PFC) circuit for the grid supply. The performance of the suggested system is evaluated using simulations carried out in MATLAB under varying operating conditions.