Title :
Quantitative analysis on energy efficiency of a battery-ultracapacitor hybrid system
Author :
Chen Zhao ; He Yin ; Noguchi, Y. ; Chengbin Ma
Author_Institution :
Joint Inst., Univ. of Michigan-Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
This paper provides a quantitative analysis on the energy efficiencies of the battery-ultracapacitor hybrid energy storage system and the lithium-ion-battery-only system under the JC08 driving cycle. There are two control parameters selected in the analysis, the efficiency of the DC-DC converter and the internal resistance of the battery pack. The analysis shows that compared to the battery-only system the battery-ultracapacitor hybrid energy storage system is less sensitive to the internal resistance of the battery pack. Meanwhile, the energy loss of the DC-DC converter is a key factor to the overall efficiency of the battery-ultracapacitor hybrid energy storage system. With a high-efficiency DC-DC converter, the battery-ultracapacitor hybrid energy storage system can achieve a similar or higher efficiency than the battery-only system.
Keywords :
DC-DC power convertors; energy conservation; secondary cells; supercapacitors; DC-DC converter; JC08 driving cycle; Li; battery pack; battery-ultracapacitor hybrid system; energy efficiency; hybrid energy storage system; internal resistance; lithium ion battery; quantitative analysis; Batteries; Energy loss; Integrated circuit modeling; Load modeling; Resistance; Supercapacitors; Battery; Efficiency; Hybrid energy storage system; Ultracapacitor;
Conference_Titel :
Industrial Electronics (ISIE), 2014 IEEE 23rd International Symposium on
Conference_Location :
Istanbul
DOI :
10.1109/ISIE.2014.6864893
