Transient controls to improve fuel cell performance and...

Details Transient controls to improve fuel cell performance and... Transient controls to improve fuel cell performance and...

2008-07-22

2008-07-22

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

C429S006000

Reexamination Certificate

active

07402353

ABSTRACT:
The present invention is a method of operating a fuel cell stack and system that minimizes the potential for having a large pressure differential between the anode and cathode flow fields and a low relative humidity occurrence within the cathode flow fields. This is accomplished by tempering the downward transient in power demand seen by the fuel cell stack. The downward transient in power demand on the fuel cell stack is tempered by reducing the rate at which the power generated by the fuel cell stack is decreased and providing the excess power generated by the fuel cell stack to other parasitic components of the fuel cell system.

REFERENCES:
patent: 2004/0253489 (2004-12-01), Horgan et al.
patent: 2005/0100777 (2005-05-01), Gurin et al.
patent: 2006/0035120 (2006-02-01), Sakai
patent: 101 55 217 (2003-05-01), None
patent: 102 33 821 (2004-02-01), None
patent: 103 07 856 (2004-09-01), None
patent: 2002352840 (2002-06-01), None
patent: WO 03/015202 (2003-02-01), None

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