A Study on Energy Efficiency of Battery Charge/Discharge System based on DC μ-Grid

Title & Authors
A Study on Energy Efficiency of Battery Charge/Discharge System based on DC μ-Grid
Yeo, Sung-Dae; Kim, Jong-Un; Lee, Kyung-Ryang; Han, Cheol-Kyu; Ryu, Tae-Hyoung; Kim, Kyeong-Hwa; Kim, Seong-Kweon;

Abstract
Formation process through charge/discharge operation is needed in manufacturing Li-ion battery. In the process battery is discharged by a load resistor of discharger. Here, energy losses happen. Therefore, in this paper, the efficient energy operation of battery is studied in the charge/discharge system based on DC $\small{{\mu}-Grid}$. A result of computer simulation shows that if in the charge/discharge system based on DC $\small{{\mu}-Grid}$, the number of discharge batteries in comparison with three charge battery sets exceeds 133%, voltage fluctuation that occurs while the grid voltage stabilizes, which makes the system fatal. Therefore, it was demonstrated that a remarkable energy saving effect could be achieved when the number of discharge battery set is maintained to be 133% in comparison with three charge battery sets.
Keywords
Charge/Discharge System;DC $\small{{\mu}-Grid}$(DC Micro Grid);Low Power Operation;Energy Efficiency;Li-Ion Battery;
Language
Korean
Cited by
1.
Li-ion 배터리 충/방전 시스템의 안정적 운영에 관한 연구,여성대;한철규;조태일;이경량;김성권;

한국전자통신학회논문지, 2016. vol.11. 4, pp.395-402
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