DESIGN AND DEVELOPMENT OF A HOME FAST CHARGER FOR EV APPLICATIONS

Abstract

The increasing adoption of electric vehicles (EVs) necessitates the development of efficient and high-power home charging solutions to address long charging times and grid limitations. This thesis presents the design and development of a Home Fast Charger (HFC) that integrates grid power with a Home Energy Storage System (HESS) to enable high-power charging while ensuring grid compatibility and efficiency. The proposed system incorporates an interleaved totem-pole AC/DC converter for high power factor correction and reduced harmonic distortion, alongside a Dual Active Bridge (DAB) DC/DC converter to facilitate bidirectional energy transfer. The research includes a comprehensive analysis of the system's operational modes, power ow management, and control strategies to optimize energy utilization. The system-level integration ensures that the charger prioritizes grid power for charging when available, while the HESS supplements power when higher charging rates are required. Simulation and experimental results validate the design, demonstrating stable voltage regulation, high efficiency, and effective power distribution between the grid, HESS, and EV battery. This work contributes to the advancement of home-based EV charging technologies by providing a scalable, efficient, and cost-effective solution for high-power charging. The findings highlight the potential for integrating energy storage systems to mitigate grid dependency and enhance charging flexibility, paving the way for future advancements in vehicle-to-home (V2H) and vehicle-to-grid (V2G) applications.