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A New High Voltage Impedance Spectrometer for the Diagnostic of Fuel Cell Stacks

[+] Author Affiliations
Sébastien Wasterlain, Daniel Hissel

FC LAB, Belfort; University of Franche-Comté, France

Fabien Harel, Denis Candusso

FC LAB, Belfort; INRETS, France

Xavier François

FC LAB; University of Technology Belfort Montbéliard, Belfort, France

Paper No. FuelCell2010-33232, pp. 107-117; 11 pages
doi:10.1115/FuelCell2010-33232
From:
  • ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2010 8th International Fuel Cell Science, Engineering and Technology Conference: Volume 1
  • Brooklyn, New York, USA, June 14–16, 2010
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 978-0-7918-4404-5 | eISBN: 978-0-7918-3875-4
  • Copyright © 2010 by ASME

abstract

This paper presents a novel architecture of an impedance spectrometer dedicated to the characterization and diagnostic of large Fuel Cell (FC) stacks operated in galvanostatic mode. The validation tests are first performed on a single Proton Exchange Membrane Fuel Cell (PEMFC). Then, experiments are carried out on a twenty-cell PEMFC stack delivering more significant power levels. The proposed impedancemeter allows spectrum measurements on cells located in the middle of the stack, where common mode potentials are usually too high for commercial devices. Moreover, the impedances of different individual cells in the stack are acquired with a synchronous measurement reference (global stack impedance). This capability allows distinguishing any singular cell behavior or drift effect of operational parameters (e.g. stack temperature and polarization current).

Copyright © 2010 by ASME

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