Technique and apparatus to regulate a reactant stoichiometric ratio of a fuel cell system
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United States of America Patent
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Issued Date -
Jun 26, 2008
app pub date -
Dec 22, 2006
filing date -
Dec 22, 2006
priority date (Note) -
Abandoned
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Abstract
A technique that is useable with a fuel cell system includes adjusting operating parameters of a fuel cell system to obtain an optimal reactant stoichiometric ratio and thereby maximize the operating efficiency and/or performance of the system. An initial starting point for the reactant stoichiometric ratio is determined based on the output power provided by a fuel cell stack. Thereafter, the optimal reactant stoichiometric ratio is obtained by adjusting the reactant stoichiometric ratio based upon the observed system operating parameters and their response to the adjustment. In this manner, an optimal reactant stoichiometric ratio is reached and maintained while the fuel cell system is in operation, thus, maximizing the system's efficiency and performance.
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