Pattern recognition monitoring of PEM fuel cell

Details Pattern recognition monitoring of PEM fuel cell Pattern recognition monitoring of PEM fuel cell

1997-02-28

1999-08-31

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

429 23, H01M 800, H01M 804

Patent

active

059452293

ABSTRACT:
The CO-concentration in the H.sub.2 feed stream to a PEM fuel cell stack is monitored by measuring current and voltage behavior patterns from an auxiliary cell attached to the end of the stack. The auxiliary cell is connected to the same oxygen and hydrogen feed manifolds that supply the stack, and discharges through a constant load. Pattern recognition software compares the current and voltage patterns from the auxiliary cell to current and voltage signature determined from a reference cell similar to the auxiliary cell and operated under controlled conditions over a wide range of CO-concentrations in the H.sub.2 fuel stream.

REFERENCES:
patent: 3753780 (1973-08-01), Fetterman
patent: 4904548 (1990-02-01), Tajima
patent: 5085949 (1992-02-01), Sanderson et al.
patent: 5712052 (1998-01-01), Kawatsu
patent: 5763113 (1998-06-01), Meltser et al.

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