Pattern recognition monitoring of PEM fuel cell

Patent · 31 December 1998

OSTI ID:872486

Meltser, Mark Alexander ^[1]

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1. Pittsford, NY

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.

• Research Organization: General Motors Corp
• DOE Contract Number: AC02-90CH10435
• Assignee: General Motors Corporation (Detroit, MI)
• Patent Number(s): US 5945229
• OSTI ID: 872486
• Country of Publication: United States
• Language: English

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current
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