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US 6,428,917 B1Granted
Regulating the maximum output current of a fuel cell stack
AssigneePlug Power Inc.
InventorsRobert A. Lacy, Russel H. Marvin
Life of this patent
Estimating the term…
Abstract
A method includes establishing a fuel flow through a fuel cell stack to produce a current. The voltages of the fuel cell stack are scanned to determine the minimum cell voltage. A maximum limit on the current is set based at least in part on the minimum cell voltage.
Claims26
A method comprising:
- establishing a fuel flow through a fuel cell stack to produce a current;
- scanning cell voltages of the fuel cell stack to determine the lowest minimum voltage of the cell voltages;
- and
- setting a maximum limit on the current based at least in part on the lowest voltage.
1 more element
A fuel cell system comprising:
- a fuel cell stack adapted to produce a current in response to a fuel flow;
- and
- a circuit coupled to the fuel cell stack and adapted to:
- determine cell voltages of the fuel cell stack,
- select the lowest voltage of the cell voltages, and
- set a maximum limit on the current based on at least in part the lowest voltage.
3 more elements
Dependencies are inferred from the claim text.