Hybrid Super Capacitor-Battery Energy Storage System For Evs

Abstract

- In this research paper, a Hybrid Energy Storage System (HESS), consisting of lithium-ion batteries and super capacitors, is analyzed. The objective of this system is to improve transient response, reduce stress on the battery, and improve efficiency in electric vehicle (EV) applications. Experimental and MATLAB-based results demonstrate improvements in charging time, reduced current stress, and enhanced voltage stability compared to battery-only systems. The large-scale adoption of Electric Vehicles (EVs) has been slowed by the following two main challenges: the prolonged recharging times of Electric Vehicles and the accelerated degradation of Lithium-ion Batteries (LIBs) under high-power conditions. The paper proposes the concept of a Hybrid Energy Storage System (HESS), which integrates the high energy density of Lithium-ion Batteries with the high-power density of Supercapacitors. The paper proposes the concept of "Fast-Charging Logic" with the help of the proposed Dual-Stage Predictive Control algorithm. The proposed algorithm uses the Supercapacitor as a high-speed buffer to store extreme peak currents during rapid recharging and regenerative braking.