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TECHNICAL PAPERS

Analysis for the Effect of Inverter Ripple Current on Fuel Cell Operating Condition

[+] Author and Article Information
Randall S. Gemmen

Gas Energy Systems Dynamics Division, National Energy Technology Center, Morgantown, WV 26507e-mail: randall.gemmen@netl.doe.gov

J. Fluids Eng 125(3), 576-585 (Jun 09, 2003) (10 pages) doi:10.1115/1.1567307 History: Received November 06, 2001; Revised November 26, 2002; Online June 09, 2003
Copyright © 2003 by ASME
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References

Figures

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Character of ripple current for a three-phase DC to AC inverter. Reference: Mohan et al. 16.
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Simulink model overview.
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(a) Fuel cell submodel overview, (b) anode hydrogen conservation model, (c) electrochemical model
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(a) Simulink results of hydrogen partial pressure time history for 30 Hz and selected current amplitude factors, (b) Simulink results of hydrogen partial pressure time history for 0.1 Hz and 3250 amp/m2 current amplitude factor
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Hydrogen concentration response curve from simulink model. Because hydrogen diffusion is fast, this response curve is very comparable to that predicted by the Diffusion Model for current <3500 amp/cm2 . See Fig. 7.
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(a) Oxygen concentration response curve from diffusion Model—30 Hz case, (b) oxygen concentration response curve from diffusion model—60 Hz case, (c) oxygen concentration response curve from diffusion model—120 Hz case, (d) oxygen concentration response curve from diffusion model—1250 Hz case
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Model comparisons for oxygen and hydrogen normalized surface responses. Data connected by lines come from the diffusion model. Data shown are for x=0.3, 60 Hz.

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