Design of a Controller for State of Charge Regulation in Battery-Supercapacitor Systems: CC-CV Charging with Modified Passive Topology

This study proposes enhancing the usage of passive topology for hybrid energy storage systems (HESS) in electric vehicles (EVs), addressing the limitations of conventional designs through an enhanced state of charge (SOC) regulation controller. The system prioritizes sequential charging of the supercapacitor and battery, overcoming issues of undercharging and limited flexibility in the existing system. The work focuses on the effect of the proposed controller for Constant Current and Constant Voltage (CC-CV) charging on the modified passive topology. The Proposed system is validated using the dSP ACE RTI 1202 MicroLab Box, ensuring precise SOC regulation and efficient operation. The comparative analysis highlights the enhanced flexibility and reliability of the proposed approach, optimizing HESS performance for EV charging applications. This advancement in passive topology design offers significant potential for improving energy storage efficiency in EV s.