Development Of Bi-Directional Dc/Dc Converter With Dual Battery Energy Storage For Hybrid Electric Vehicle System

Abstract

The increasing demand for efficient and sustainable energy systems in hybrid electric vehicles (HEVs) has led to the development of advanced power conversion technologies. This work presents the design and development of a bi-directional DC/DC converter integrated with a dual battery energy storage system for hybrid electric vehicle applications. The proposed system enables efficient energy transfer between two energy storage units and the vehicle’s DC bus, allowing both charging and discharging operations based on load requirements.The bi-directional converter plays a crucial role in managing power flow by operating in both buck and boost modes, thereby improving energy utilization and system flexibility. The dual battery configuration enhances reliability, extends battery life, and ensures uninterrupted power supply by balancing energy between primary and auxiliary storage units. The system is controlled using advanced control strategies to maintain voltage stability, reduce power losses, and improve overall efficiency. Simulation and experimental results demonstrate that the proposed system achieves high efficiency, better energy management, and improved performance compared to conventional single battery systems. This approach contributes to the advancement of energy-efficient and sustainable hybrid electric vehicle technologies.