Research on the ultracapacitor/battery hybrid system

Author

Wang Qi ; Sun Yukun ; Chen Kunhua ; Huang Yonghong ; Ji Xiaofu

Author_Institution

Sch. of Electr. & Inf. Eng., Jiangsu Univ., Zhenjiang, China

fYear

2013

fDate

25-27 May 2013

Firstpage

4481

Lastpage

4485

Abstract

The ultracapacitor/battery hybrid system makes the best of the characteristics of high energy density of battery and long cycle life of ultracapacitor. The mathematical model of ultracapacitor/battery hybrid system was set up, and the characters of it such as peak power enhancement were studied and the correlative factors were analyzed in this paper. Ultracapacitor and battery are connected in parallel by a bi-directional buck-boost converter. Model the ultracapacitor/battery hybrid system under MATLAB 7 and use a double loop PWM to control. The result shows that battery and ultracapacitor could work in optimizing discharge condition when the load power is pulsating. The bi-directional buck-boost converter has better performance and practicability.

Keywords

PWM power convertors; secondary cells; supercapacitors; MATLAB 7; bidirectional buck-boost converter; correlative factors; discharge condition optimization; double loop PWM; high energy density; hybrid ultracapacitor-battery system; load power; long cycle life; mathematical model; peak power enhancement; Batteries; Bidirectional control; Hybrid power systems; Load modeling; Resistance; Supercapacitors; Voltage control; a bi-directional buck-boost converter; battery; the ultracapacitor/battery hybrid system; ultracapacitor;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (CCDC), 2013 25th Chinese

Conference_Location

Guiyang

Print_ISBN

978-1-4673-5533-9

Type

conf

DOI

10.1109/CCDC.2013.6561742

Filename

6561742