Title :
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
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;
Conference_Titel :
Control and Decision Conference (CCDC), 2013 25th Chinese
Conference_Location :
Guiyang
Print_ISBN :
978-1-4673-5533-9
DOI :
10.1109/CCDC.2013.6561742
