Implementation of a reliable load sharing strategy between battery and ultra-capacitor on a prototype electric vehicle

Abstract

In this study, a battery and ultra-capacitor (UC) hybrid electric vehicular system is proposed. The battery supplies the long term energy requirements of the vehicle while UC is employed for picking up the transient load variations that can seriously damage the electrochemical structure of the battery. An experimental assessment of the constructed vehicle prototype of such hybrid structure is realized under a real time drive cycle. The proposed system provides the advantages of eliminating of the supervisory control system necessity as well as realizing a more reliable local control approach based on voltage regulation compared to current based control approaches.