Pattern recognition monitoring of PEM fuel cell

Patent · Tue Aug 31 00:00:00 EDT 1999

OSTI ID:678547

Meltser, M A

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. 4 figs.

• Research Organization: General Motors LLC, Detroit, MI (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-90CH10435
• Assignee: General Motors Corp., Detroit, MI (United States)
• Patent Number(s): US 5,945,229/A/
• Application Number: PAN: 8-807,559
• OSTI ID: 678547
• Resource Relation: Other Information: PBD: 31 Aug 1999
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
08 HYDROGEN FUEL
SOLID ELECTROLYTE FUEL CELLS
HYDROGEN FUEL CELLS
CARBON MONOXIDE
ON-LINE MEASUREMENT SYSTEMS
DIRECT CURRENT
ELECTRIC POTENTIAL
PATTERN RECOGNITION