Interleaved Boost Converter Based Solar PV Plant for Distributed Battery Charging

In recent years, there has been a substantial increase in the adoption of electric vehicles (EVs) due to growing concerns about carbon dioxide (CO
2
) emissions, attempt to reduce dependency on fossil fuels, and a push towards renewable energy sources. To support the expanding adoption of electric vehicles, it is necessary to grow the EV battery charging stations. This paper presents an approach for charging of Lithium-ion batteries used in the EVs directly from solar energy through photovoltaic (PV) systems for distributed charging stations. For optimal performance, the PV system is operated at its maximum power point (MPP). In scenarios where EV battery charging is distributed across a larger area, a higher-rated solar PV plant is considered. To improve power handling and to minimize input current fluctuations, an interleaved boost DC-DC converter (IBC) is employed. Charging of the multiple EV batteries is facilitated using the distributed phase-shift full bridge converters. The battery charging process follows the constant current-constant voltage (CC-CV) technique to align with the Li-ion battery's charging requirements. The proposed approach for distributed EV battery charging is implemented using the MATLAB/Simulink software tool for verification of results.