EV CHARGING INFRASTRUCTURE WITH DISTRIBUTED ENERGY RESOURCES AND RELIABLE GRID CONNECTIVITY

Abstract

The increasing penetration of electric vehicles (EVs) demands an efficient, reliable and environmentally sustainable charging infrastructure. Conventional grid-based charging systems are limited by power quality issues, high peak demand and dependence on the utility grid. To overcome these challenges, this work presents a distributed energy resources (DERs) based EV charging system utilizing a hybrid combination of solar photovoltaic (PV), fuel cell and battery storage integrated through a common DC bus architecture. The proposed model supports seamless transition between grid-connected and standalone modes using static transfer switches (STS), and ensures un interrupted EV charging during grid outage conditions. An adaptive comb-filter based control strategy is employed to enhance power quality, reduce harmonic distortion and maintain stable DC bus voltage. Simulation results validate the effectiveness of the system under varying load, weak grid scenarios, and fluctuating solar insolation, demonstrating reduced total harmonic distortion (THD), improved system reliability and fast charging capability. Thus, the proposed hybrid renewable-based EV charging station provides an efficient and sustainable solution for next-generation smart transportation and microgrid applications.