Title :
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
fDate :
Aug. 31 2014-Sept. 3 2014
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;
Conference_Titel :
Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-4240-4
DOI :
10.1109/ITEC-AP.2014.6941187
