Optimized Charging Scheme Using Resonant Converter Technology for Electric Vehicles (EV) Battery Charging System

The rapid creation of electric vehicles (EVs) makes it necessary, that charging system must be efficient and reliable to support sustainable conveyance. This paper demonstrates an optimized charging scheme for EVs using a resonant converter technique. The system is proposed considering the significant challenges in EV battery charging, including efficiency, power density, and thermal management. Leveraging resonant converters that integrate full bridge, resonant tank, and High-Frequency Transformer (HFTF) with a proposed compensating element linked to the secondary side of the HFTF improves the safety and effectiveness of the EV charging system by adjusting the Duty Ratio of Constant Current and Constant Voltage modes. A model is developed to evaluate the resonant converter's behavior and its parameters are optimized for various charging scenarios. The experimental outcomes on MATLAB show the effect of the proposed scheme, demonstrating important improvements in the efficiency of the charger and stability of the overall system compared to charging methods that are traditionally used. The MATLAB results have been validated on the OPAL-RT real-time simulator. The optimized proposed model with a resonant converter-based charging scheme contributes a promising solution for the EV infrastructure, and future for quicker, more efficient, and reliable Electric Vehicle charging.