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논문 기본 정보

자료유형
학술저널
저자정보
정민철 (Korea University of Technology and Education) 김지명 (Korea University of Technology and Education) 태동현 (Korea University of Technology and Education) 노대석 (Korea University of Technology and Education)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제70권 제10호
발행연도
2021.10
수록면
1,443 - 1,451 (9page)
DOI
10.5370/KIEE.2021.70.10.1443

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이 논문의 연구 히스토리 (4)

초록· 키워드

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Recently, according to the green growth and carbon-neutral policy of government, installation of ESS(energy storage system) with various functions such as peak shaving, frequency regulation and output stabilization of renewable energy sources is rapidly increasing. However, massive scale property has been damaged due to frequent fire accidents in ESS, which is installed and operated on site, and it is reported that most of the fire accidents are occurred during the rest time after full charging. In particular, since Li-ion batteries for ESS are composed of a combination of numerous cells in series and parallel, self-energy balancing phenomenon can be occurred, which current flows from a cell with a high SOC to a cell with a low SOC when the SOC states of cells connected in parallel are different due to deterioration, and the phenomenon is estimated to be one of the causes of the fire accidents. Therefore, this paper proposes a novel circuit configuration and operation algorithm of BMS to prevent self-energy balancing phenomenon in ESS. And also, this paper presents a modeling of self-energy balancing in Li-ion battery using PSCAD/EMTDC and implements a BMS composed of a battery unit, a charger unit, and a self-energy balancing unit, etc., using Labview S/W based on the proposed modeling. From the simulation and test results based on the proposed modeling and test device, it is found that aged cells may be adversely affected by the self-energy balancing phenomenon, and it is confirmed that the proposed BMS is useful tool to prevent self-energy balancing current for the safety of Li-ion battery.

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Abstract
1. 서론
2. 셀프에너지 밸런싱을 고려한 리튬이온전지용 BMS의 운용알고리즘
3. PSCAD/EMTDC에 의한 리튬이온전지의 셀프 에너지 밸런싱의 모델링
4. 셀프에너지 밸런싱을 고려한 리튬이온전지용 BMS의 구현
5. 시뮬레이션 및 시험 결과 분석
6. 결론
References

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