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Analysis, design, and experimental validation of a primary side current-sensing flyback converter for use in a battery management system

Analysis, design, and experimental validation of a primary side current-sensing flyback converter for use in a battery management system
Analysis, design, and experimental validation of a primary side current-sensing flyback converter for use in a battery management system
The purpose of the presented flyback converter is to equalise the voltage between the cells in a series string within a battery pack providing an active cell-balancing system. This would be an important part of a battery management system (BMS) for charging li-ion batteries in electric vehicles. The converter is based on primary side current sensing, where the conventional feedback circuit is omitted. The purpose of this converter is to improve efficiency by decreasing losses and to increase battery power density by decreasing the number of elements which constitute the power electronics; these are important factors for the future development of electric vehicle battery packs. Analysis of the circuit and the design procedure of the DC-DC flyback converter with primary current sensing is presented in this paper. Finally, several experimental converters have been built and tested to validate the authors’ approach.
flyback, converter, battery management system, primary side current sensing, active cell balancing
Dimitrov, Borislav
7a128e82-8621-4ffb-8390-77f7153d5d3a
Krishna, Muthu
e399da21-ee25-4c11-9f29-6e11bb1f71c5
Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab
Sharkh, Suleiman
c8445516-dafe-41c2-b7e8-c21e295e56b9
Elkhateb, Ahmad
e09e5b66-cf9e-4ae9-8381-d1d702f41d3c
Dimitrov, Borislav
7a128e82-8621-4ffb-8390-77f7153d5d3a
Krishna, Muthu
e399da21-ee25-4c11-9f29-6e11bb1f71c5
Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab
Sharkh, Suleiman
c8445516-dafe-41c2-b7e8-c21e295e56b9
Elkhateb, Ahmad
e09e5b66-cf9e-4ae9-8381-d1d702f41d3c

Dimitrov, Borislav, Krishna, Muthu, Cruden, Andrew, Sharkh, Suleiman and Elkhateb, Ahmad (2018) Analysis, design, and experimental validation of a primary side current-sensing flyback converter for use in a battery management system. Electronics, 7 (4), [43]. (doi:10.3390/electronics7040043).

Record type: Article

Abstract

The purpose of the presented flyback converter is to equalise the voltage between the cells in a series string within a battery pack providing an active cell-balancing system. This would be an important part of a battery management system (BMS) for charging li-ion batteries in electric vehicles. The converter is based on primary side current sensing, where the conventional feedback circuit is omitted. The purpose of this converter is to improve efficiency by decreasing losses and to increase battery power density by decreasing the number of elements which constitute the power electronics; these are important factors for the future development of electric vehicle battery packs. Analysis of the circuit and the design procedure of the DC-DC flyback converter with primary current sensing is presented in this paper. Finally, several experimental converters have been built and tested to validate the authors’ approach.

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More information

Accepted/In Press date: 19 March 2018
e-pub ahead of print date: 22 March 2018
Keywords: flyback, converter, battery management system, primary side current sensing, active cell balancing

Identifiers

Local EPrints ID: 419672
URI: http://eprints.soton.ac.uk/id/eprint/419672
PURE UUID: c4d6a14a-e792-41dc-a325-703ddc6b8cfe
ORCID for Andrew Cruden: ORCID iD orcid.org/0000-0003-3236-2535

Catalogue record

Date deposited: 19 Apr 2018 16:30
Last modified: 07 Oct 2020 02:01

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