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Current Distribution Identification in Fuel Cell Stacks From External Magnetic Field Measurements

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8 Author(s)
Le Ny, M. ; G2ELab, Univ. of Grenoble, Grenoble, France ; Chadebec, O. ; Cauffet, G. ; Dedulle, J.-M.
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This paper presents a new non invasive technique for fuel cell diagnosis. The method relies on the measurements of the magnetic field signature generated by a working fuel cell. Knowing the relationship between currents and magnetic field, it is possible to estimate the current density by solving an inverse problem. This problem being ill-posed, original current and sensors basis are proposed to improve the reconstruction process. The experimental set-up remains simple, based on few fixed sensors and shows a good efficiency.

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Magnetics, IEEE Transactions on  (Volume:49 ,  Issue: 5 )