Improved Power Management Control of a Multiport Converter Based EV Charging Station with PV and Battery

Abstract

With the expected rise in popularity of EVs and PHEVs, quick charging speeds have become a need. Increasing the charging rate requires more energy, which the grid can't supply. As a result, there has been a surge in research into alternative methods of charging electric vehicles (EVs) that don't need the traditional power infrastructure. In this study, a photovoltaic (PV) source is employed to facilitate high power EV charging. PV output power, though, is intermittent since it is subject to the vagaries of the weather. As a result, a renewable energy based rapid charging station combines battery storage with the PV in a grid-tied system to provide a constant supply for charging electric vehicles on-site. In order to support the high charging rates required when a large number of EVs are linked to the electrical grid, fast charging stations powered by renewable energy should be cost effective, efficient, and dependable. However, the power infrastructure might be strained by fast charging stations, especially super-fast charging stations, due to the possibility for overload during peak hours, abrupt power gaps, and voltage dips. An electric vehicle (EV) charging station that utilises a multiport converter and is connected to a photovoltaic (PV) power generator and a BESS is the subject of this project's in-depth modelling. Power gap balancing, peak shaving, valley filling, and voltage sag correction are just a few of the stabilisation benefits that this development's control system and combination of PV power generation, EV charging station, and battery energy storage (BES) provides. When daily charging demand is matched with sufficient daytime PV output, the impact on the power system is minimised. The advantages of the proposed multiport EV charging circuits with the PV-BES design are confirmed in various modes through MATLAB/Simulink simulation results.