Flexible Grouping for Enhanced Energy Utilization Efficiency in Battery Energy Storage Systems

doi:10.3390/en9070498

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	Flexible Grouping for Enhanced Energy Utilization Efficiency in Battery Energy Storage Systems
	Diao, Weiping 1,2; Jiang, Jiuchun 1,2; Liang, Hui 1,2; Zhang, Caiping 1,2; Jiang, Yan 1,2; Wang, Leyi 3; Mu, Biqiang4
	2016-07-01
发表期刊	ENERGIES
ISSN	1996-1073
卷号	9 期号:7 页码:15
摘要	As a critical subsystem in electric vehicles and smart grids, a battery energy storage system plays an essential role in enhancement of reliable operation and system performance. In such applications, a battery energy storage system is required to provide high energy utilization efficiency, as well as reliability. However, capacity inconsistency of batteries affects energy utilization efficiency dramatically; and the situation becomes more severe after hundreds of cycles because battery capacities change randomly due to non-uniform aging. Capacity mismatch can be solved by decomposing a cluster of batteries in series into several low voltage battery packs. This paper introduces a new analysis method to optimize energy utilization efficiency by finding the best number of batteries in a pack, based on capacity distribution, order statistics, central limit theorem, and converter efficiency. Considering both battery energy utilization and power electronics efficiency, it establishes that there is a maximum energy utilization efficiency under a given capacity distribution among a certain number of batteries, which provides a basic analysis for system-level optimization of a battery system throughout its life cycle. Quantitative analysis results based on aging data are illustrated, and a prototype of flexible energy storage systems is built to verify this analysis.
关键词	battery flexible group converter efficiency energy utilization efficiency
DOI	10.3390/en9070498
语种	英语
资助项目	China National Energy Administration[NY20150301]
WOS研究方向	Energy & Fuels
WOS类目	Energy & Fuels
WOS记录号	WOS:000381497300021
出版者	MDPI AG
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/23553
专题	系统科学研究所
通讯作者	Zhang, Caiping
作者单位	1.Beijing Jiaotong Univ, Natl Act Distribut Network Technol Res Ctr NANTEC, Beijing 100044, Peoples R China 2.Beijing Jiaotong Univ, Collaborat Innovat Ctr Elect Vehicles Beijing, Beijing 100044, Peoples R China 3.Wayne State Univ, Dept Elect & Comp Engn, Detroit, MI 48202 USA 4.Chinese Acad Sci, Acad Math & Syst Sci, Inst Syst Sci, Key Lab Syst & Control, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Diao, Weiping,Jiang, Jiuchun,Liang, Hui,et al. Flexible Grouping for Enhanced Energy Utilization Efficiency in Battery Energy Storage Systems[J]. ENERGIES,2016,9(7):15.
APA	Diao, Weiping.,Jiang, Jiuchun.,Liang, Hui.,Zhang, Caiping.,Jiang, Yan.,...&Mu, Biqiang.(2016).Flexible Grouping for Enhanced Energy Utilization Efficiency in Battery Energy Storage Systems.ENERGIES,9(7),15.
MLA	Diao, Weiping,et al."Flexible Grouping for Enhanced Energy Utilization Efficiency in Battery Energy Storage Systems".ENERGIES 9.7(2016):15.