Model predictive control based balancing strategy for series-connected lithium-ion battery packs

Zheng, L; Zhu, J; Wang, G; Lu, DDC; McLean, P; He, T

Model predictive control based balancing strategy for series-connected lithium-ion battery packs

Zheng, L Zhu, J

Wang, G

Lu, DDC

McLean, P

He, T

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Publication Type:: Conference Proceeding
Citation:: 2017 19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe, 2017, 2017-January
Issue Date:: 2017-11-06

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Field	Value	Language
dc.contributor.author	Zheng, L	en_US
dc.contributor.author	Zhu, J https://orcid.org/0000-0002-9763-4047	en_US
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578	en_US
dc.contributor.author	Lu, DDC https://orcid.org/0000-0003-2145-0580	en_US
dc.contributor.author	McLean, P https://orcid.org/0000-0002-7731-4927	en_US
dc.contributor.author	He, T	en_US
dc.date.issued	2017-11-06	en_US
dc.identifier.citation	2017 19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe, 2017, 2017-January	en_US
dc.identifier.isbn	9789075815276	en_US
dc.identifier.uri	http://hdl.handle.net/10453/126796
dc.description.abstract	© assigned jointly to the European Power Electronics and Drives Association & the Institute of Electrical and Electronics Engineers (IEEE). For reducing the inconsistent state of charges (SOCs) of lithium-ion battery cells and making the full use of battery packs, effective battery balancing technology should be in place for battery management systems. Since aged battery packs usually suffer from not only non-uniform cell SOCs and voltages but also non-uniform cell capacities, it is more challenging to balance an aged battery pack than a new one. This paper proposes a model predictive control (MPC) based balancing strategy to fully charge battery packs under such inconsistent conditions, especially for aged battery packs. The algorithm of the proposed strategy for computing the required average balancing current and the predicted balancing current for each cell is presented, followed by employing a minimum cost function value between these two currents to control the operation model of the equalizer for each cell. The simulation results verify the effectiveness of the proposed approach. Compared with the conventional average SOC strategy, the proposed MPC based strategy can effectively avoid over-equalization during the balancing process, thus reducing balancing energy consumption.	en_US
dc.relation.ispartof	2017 19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe	en_US
dc.relation.isbasedon	10.23919/EPE17ECCEEurope.2017.8099189	en_US
dc.title	Model predictive control based balancing strategy for series-connected lithium-ion battery packs	en_US
dc.type	Conference Proceeding
utslib.citation.volume	2017-January	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	2017-January	en_US

Abstract:

© assigned jointly to the European Power Electronics and Drives Association & the Institute of Electrical and Electronics Engineers (IEEE). For reducing the inconsistent state of charges (SOCs) of lithium-ion battery cells and making the full use of battery packs, effective battery balancing technology should be in place for battery management systems. Since aged battery packs usually suffer from not only non-uniform cell SOCs and voltages but also non-uniform cell capacities, it is more challenging to balance an aged battery pack than a new one. This paper proposes a model predictive control (MPC) based balancing strategy to fully charge battery packs under such inconsistent conditions, especially for aged battery packs. The algorithm of the proposed strategy for computing the required average balancing current and the predicted balancing current for each cell is presented, followed by employing a minimum cost function value between these two currents to control the operation model of the equalizer for each cell. The simulation results verify the effectiveness of the proposed approach. Compared with the conventional average SOC strategy, the proposed MPC based strategy can effectively avoid over-equalization during the balancing process, thus reducing balancing energy consumption.

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http://hdl.handle.net/10453/126796