Battery balancing algorithm for serial multi-module UPS system

Author

Soon-Ryung Lee ; Bong-Yeon Choi ; Min-Gi Kim ; Eun-Jung Ha ; Chung-Yuen Won

Author_Institution

Coll. of Inf. & Commun. Eng., Sungkyunkwan Univ., Suwon, South Korea

fYear

2014

fDate

Aug. 31 2014-Sept. 3 2014

Firstpage

1

Lastpage

5

Abstract

In this paper, battery balancing algorithm for serial multi-module UPS system is proposed. The battery balancing algorithm is performed by the output power control of each UPS modules for eliminating SOC difference of batteries respectively. So, the coulomb counting method is used to estimate SOC of the batteries. The reference is compensated with SOC difference and according to magnitude order of SOC . Finally, the output voltage becomes sum of output voltage of UPS modules and the utilization of the battery is increased in serial UPS system. The validity of proposed battery balancing algorithm is verified by simulation results.

Keywords

power control; secondary cells; uninterruptible power supplies; SOC; UPS modules; battery balancing algorithm; battery utilization; coulomb counting method; output power control; serial multimodule UPS system; Batteries; Discharges (electric); Inverters; Power generation; Simulation; System-on-chip; Uninterruptible power systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo

Conference_Location

Beijing

Print_ISBN

978-1-4799-4240-4

Type

conf

DOI

10.1109/ITEC-AP.2014.6941187

Filename

6941187