International Journal of Science, Engineering and TechnologyAuthors: Mr. Ashutosh Tiwari, Mr. Khilendra Nirmalkar, Mr, Sachin Patel, Mr. Satyam Manikpuri, Mr.Tushar Sahu, Mr. Ashutosh Tiwari
Abstract: The rapid growth of electric vehicle (EV) adoption has led to a substantial rise in the need for high-performance and dependable charging solutions. Among these, the onboard charger (OBC) plays a vital role by transforming grid-supplied alternating current (AC) into direct current (DC) required for battery charging. Despite ongoing advancements, challenges such as current ripple, power losses due to switching, and thermal constraints continue to affect OBC performance and design efficiency.This review presents an overview of recent progress in EV onboard charging technologies, with particular attention to converter configurations, integrated charging structures, bidirectional power flow capabilities, and methods for mitigating current ripple. In addition, it explores emerging trends including chargers supported by renewable energy sources, security concerns in charging systems, and multifunctional charger designs.The study also highlights the significance of analyzing both high-frequency and low-frequency behaviors to enhance efficiency, maintain power quality, and ensure system reliability. Lastly, it identifies key research gaps—such as issues related to scalability, heat management, fault resilience, and cost-effectiveness—to provide direction for future innovations in onboard charger development.
DOI: http://doi.org/10.5281/zenodo.20201670
