Method and controller for controlling fuel cell system

Details Method and controller for controlling fuel cell system Method and controller for controlling fuel cell system

H - Electricity

01

M

H01M 8/04 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2587550

A fuel cell system capable of learning its current-voltage characteristics precisely in a short time even when the current-voltage characteristics of a fuel cell varies due to reduction of a catalyst of an oxidizing agent electrode during the stop of operation of the fuel cell system. A controller (13) learns current-voltage characteristics of a fuel cell stack (2), detects the amount of variation in voltage of current-voltage characteristics before a stop of power generation and those after restart of power generation, and corrects the learnt value of the current-voltage characteristics by the amount of variation in voltage.

L~invention concerne un système à piles à combustible capable d~apprendre ses caractéristiques de courant et de tension de manière précise dans un court laps de temps même si les caractéristiques de courant et de tension d~une pile à combustible varient à la suite d~une réduction d~un catalyseur d~une électrode d~agent oxydant pendant l~arrêt de fonctionnement du système à piles à combustible. Un contrôleur (13) apprend les caractéristiques de courant et de tension d~un groupement de piles à combustible (2), détecte le degré de variation de tension des caractéristiques de courant et de tension avant un arrêt de production d~énergie et détecte ces caractéristiques après le redémarrage de la production d~énergie, et corrige la valeur apprise des caractéristiques de courant et de tension en fonction de la variation de tension.

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