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http://hdl.handle.net/10397/61220
Title: | An automatic switched-capacitor cell balancing circuit for series-connected battery strings | Authors: | Ye, Y Cheng, KWE |
Issue Date: | 2016 | Source: | Energies, Mar. 2016, v. 9, no. 3, p. 1-15 | Abstract: | In this paper, a novel voltage equalizer is developed for series battery strings based on the two-phase switched capacitor technique. Different from the conventional voltage equalizers which are developed by switched-mode power converters, bulky magnetic components and complex monitoring and control system are avoided in the proposed system. Just a pair of complementary pulse signals with constant switching frequency and fixed duty ratio are required to control all of switches employed in the proposed voltage equalizer, and charge transfers from the higher voltage battery cells to lower voltage ones automatically. The circuit configuration and operation principle are provided in this paper. The model of the proposed voltage equalizer is also derived. Comparison with other works indicates that the proposed method is superior to the conventional switched-capacitor (SC) voltage equalizer for the high stack of series battery strings. Experimental results demonstrate that the proposed voltage equalization system is capable of excellent voltage balancing performance with a simple control method. | Keywords: | Battery Battery management system (BMS) Energy storage system Switched-capacitor (SC) Voltage balancing |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | Energies | EISSN: | 1996-1073 | DOI: | 10.3390/en9030138 | Rights: | © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). The following publication Ye, Y., & Cheng, K. W. E. (2016). An automatic switched-capacitor cell balancing circuit for series-connected battery strings. Energies, 9(3), (Suppl. ), - is available athttps://dx.doi.org/10.3390/en9030138 |
Appears in Collections: | Journal/Magazine Article |
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Ye_Automatic_Switched-capacitor_Cell.pdf | 3.43 MB | Adobe PDF | View/Open |
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