Harrison, H.T. orcid.org/0000-0003-2526-9199, Cooke, G., Hewitt, D.A. orcid.org/0000-0002-4585-2915 et al. (2 more authors) (2017) Magnetic tomography for lead acid batteries. Journal of Energy Storage, 12. pp. 1-10.
Abstract
© 2017 The AuthorsThis paper explores the inverse problem approach for finding the current distribution within an electrochemical cell from magnetic field measurements. Current distribution is shown to be a useful measurement for diagnosis of cells and development of cell design. Existing current distribution measurement methods are discussed to provide context and motivation for the work. Magnetic field measurements can be obtained non-invasively and contain information about the current distribution, which is extracted using an appropriate solver. Experimental results are presented which test the effectiveness of a particular inverse problem solver, using both simulated and real magnetic field measurements. The solver presented is based upon one found in literature, but with novel problem-specific modifications. Errors in conductance values in the forward model definition are simulated in order to quantify their effect on solution quality. A modification to the solver is proposed to improve robustness against these model errors. This results in improved solution quality when using real measured data from a resistor-wire model of a cell, and simulated data from a model which more accurately represents the conductance of the cell plate grid and active mass.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 The Author(s). Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Current distribution; Energy storage; Magnetic tomography; Lead acid battery; Inverse problems; Tikhonov regularisation |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/D079527/1 ADVANCED LEAD ACID BATTERY CONSORTIUM UNSPECIFIED |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 10 May 2017 15:32 |
Last Modified: | 06 Nov 2018 12:57 |
Published Version: | https://doi.org/10.1016/j.est.2017.03.014 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.est.2017.03.014 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:115976 |