Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for control of operation
Reexamination Certificate
2011-06-28
2011-06-28
Crepeau, Jonathan (Department: 1725)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for control of operation
C429S432000, C429S452000, C429S505000
Reexamination Certificate
active
07968240
ABSTRACT:
A fuel cell system is provided that includes a fuel cell stack with a plurality of fuel cells and a power converter in electrical communication with the fuel cell stack. The power converter is configured to selectively regulate a power of the fuel cell stack and short circuit the fuel cell stack, as desired. A method for starting the fuel cell stack is also described, including the steps of causing a short circuit of the fuel cell stack by placing the power converter in a short circuit mode; introducing a hydrogen to the anodes of the fuel cell stack to displace a quantity of air on the anodes; and placing the power converter in a power regulation mode. A degradation of the fuel cell stack during start-up is thereby militated against.
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Foley Robert S.
Hochgraf Clark G.
Hortop Matthew K.
Lakshmanan Balasubramanian
Crepeau Jonathan
Douyette Kenneth
Fraser Clemens Martin & Miller LLC
GM Global Technology Operations LLC
Miller J. Douglas
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