Eur. Phys. J. Appl. Phys. (2017) 79: 20901
https://doi.org/10.1051/epjap/2017160468

Regular Article

2D and 3D fault basis for fuel cell diagnosis by external magnetic field measurements^*

¹ CNRS, G2Elab, Université Grenoble Alpes, 38000 Grenoble, France
² CNRS, LEPMI, Université Grenoble Alpes, 38000 Grenoble, France
³ CEA, LITEN, Université Grenoble Alpes, 38054 Grenoble, France
⁴ SymbioFCell, 38600 Fontaine, France

^a e-mail: lyes.ifrek@g2elab.grenoble-inp.fr

Received: 12 December 2016
Revised: 1 May 2017
Accepted: 30 May 2017
Published online: 10 July 2017

Abstract

An original approach used for the identification of faults in fuel cell stacks is presented. It is based on the 3D reconstruction of the current density from external magnetic field measurements which is an ill-posed magnetostatic linear inverse problem. A suitable and original current density and magnetic field basis are proposed in order to define both local and global faults on a fuel cell stack. The inverse problem is regularized by truncated singular value decomposition (SVD) to ensure the uniqueness of the solution.