We present here a calibrated and experimentally validated lumped parameter model of fuel cell polarization for a hydrogen fed multi-cell, low-pressure, proton exchange membrane (PEM) fuel cell stack. The experimental methodology devised for calibrating the model was completed on a 24 cell, 300 cm2 stack with GORE™ PRIMERA® Series 5620 membranes. The predicted cell voltage is a static function of current density, stack temperature, reactant partial pressures, and membrane water content. The maximum prediction error associated with the sensor resolutions used for the calibration is determined along with a discussion of the model sensitivity to physical variables. The expected standard deviation due to the cell-to-cell voltage variation is also modelled. In contrast to other voltage models that match the observed dynamic voltage behavior by adding unreasonably large double layer capacitor effects or by artificially adding dynamics to the voltage equation, we show that a static model can be used when combined with dynamically resolved variables. The developed static voltage model is then connected with a dynamic fuel cell system model that includes gas filling dynamics, diffusion and water dynamics and we demonstrate the ability of the static voltage equation to predict important transients such as reactant depletion and electrode flooding. It is shown that the model can qualitatively predict the observed stack voltage under various operating conditions including step changes in current, temperature variations, and anode purging.
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ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology
June 19–21, 2006
Irvine, California, USA
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4247-9
PROCEEDINGS PAPER
Parameterization of Fuel Cell Stack Voltage: Issues on Sensitivity, Cell-to Cell Variation, and Transient Response Available to Purchase
Arlette L. Schilter,
Arlette L. Schilter
Swiss Federal Insitute of Technology Zurich (ETH), Zurich, Switzerland
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Denise A. McKay,
Denise A. McKay
University of Michigan, Ann Arbor, MI
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Anna G. Stefanopoulou
Anna G. Stefanopoulou
University of Michigan, Ann Arbor, MI
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Arlette L. Schilter
Swiss Federal Insitute of Technology Zurich (ETH), Zurich, Switzerland
Denise A. McKay
University of Michigan, Ann Arbor, MI
Anna G. Stefanopoulou
University of Michigan, Ann Arbor, MI
Paper No:
FUELCELL2006-97177, pp. 307-317; 11 pages
Published Online:
September 15, 2008
Citation
Schilter, AL, McKay, DA, & Stefanopoulou, AG. "Parameterization of Fuel Cell Stack Voltage: Issues on Sensitivity, Cell-to Cell Variation, and Transient Response." Proceedings of the ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology. ASME 2006 Fourth International Conference on Fuel Cell Science, Engineering and Technology, Parts A and B. Irvine, California, USA. June 19–21, 2006. pp. 307-317. ASME. https://doi.org/10.1115/FUELCELL2006-97177
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