Enhancing battery performance under motor overload drive with a battery–supercapacitor hybrid energy storage system

Abstract

Single-power sources, such as lithium batteries, face limitations in simultaneously meeting the demands for compact size, long lifespan, and high discharge power. To address these challenges, this paper proposes a novel Battery–Supercapacitor Hybrid Energy Storage System (BSHESS). This system combines the benefits of long lifespan, fast response time, and high instantaneous output power. Furthermore, the acceleration of trajectory tracking is introduced as a performance indicator in the energy management strategy, which enhances the control integrity of the hybrid energy storage system. Finally, an experimental setup was developed to validate the design and investigate system performance. Experimental results show that, compared to traditional single-source power systems, the proposed hybrid energy storage system significantly improves both trajectory tracking accuracy and response speed.