文章基本信息

标题：Distributed Control of Second Life Batteries in a Parallel Connected Network
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作者：Michael Bagherpour ; Raymond A. de Callafon
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2020
卷号：53
期号：2
页码：12511-12516
DOI：10.1016/j.ifacol.2020.12.1778
语种：English
出版社：Elsevier
摘要：AbstractUsed batteries that are no longer fit for their original applications can be combined to form usable battery packs. Cells can be connected in series to form modules with higher voltage, and these modules can be connected in parallel to build up the capacity of the battery pack. Parallel connections may cause stray currents within the battery pack due to heterogeneous operational parameters of the modules, so the current output by each module must be controlled to eliminate this problem. We present an approach to control such a configuration by buck regulating the terminal voltage of each module. The novelty of the proposed control algorithm is to separate the control into two components: an occasional update to estimates of slow-varying system parameters, and a frequent update of control inputs to accommodate fluctuations in the load. The estimated system parameters are communicated infrequently by a central processor, while the modules individually calculate control inputs. The required communication between modules and the central processor is greatly reduced by distributing the calculation of control inputs, allowing the system to scale up efficiently even as the number of modules grows large.
关键词：KeywordsEnergy storageNetworked systemsDecentralized control