Technique to regulate an efficiency of a fuel cell system
First Claim
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1. An article comprising a computer readable storage medium storing instructions to cause a computer to:
- interact with a fuel processor to change a rate at which the fuel processor is providing fuel to a fuel cell stack;
observe a response of at least one cell voltage of the stack to the changing of the rate; and
control the fuel processor to regulate an efficiency of the stack based on the observation.
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Abstract
A technique that is usable with a fuel cell stack includes providing a fuel flow to the stack, changing the fuel flow and observing a response of at least one cell voltage of the stack to the change in the fuel flow. An efficiency of the stack is regulated based on the observation.
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Citations
23 Claims
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1. An article comprising a computer readable storage medium storing instructions to cause a computer to:
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interact with a fuel processor to change a rate at which the fuel processor is providing fuel to a fuel cell stack;
observe a response of at least one cell voltage of the stack to the changing of the rate; and
control the fuel processor to regulate an efficiency of the stack based on the observation. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An article comprising a computer readable storage medium storing instructions to cause a processor to:
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select a group of one or more fuel cells of a fuel cell stack;
monitor one or more cell voltages of the group;
determine from said one or more cell voltages whether the fuel cell stack is failing to consume substantially all of a fuel flow that is being provided to the stack; and
adjust the fuel flow until said one or more cell voltages indicate that the fuel cell stack is consuming substantially all of the fuel flow that is being provided to the stack. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. An article comprising a computer readable storage medium storing instructions to cause a processor to:
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select a group of one or more fuel cells of a fuel cell stack;
monitor one or more cell voltages of the group;
determine from said one or more cell voltages whether at least one of said one or more cell voltages is approximately equal to a predetermined cell threshold voltage; and
adjust a fuel flow to the fuel cell stack until at least one of said one or more cell voltages is approximately equal to the predetermined cell threshold voltage. - View Dependent Claims (17, 18, 19)
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20. An article comprising a computer readable storage medium storing instructions to cause a processor to:
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select a group of one or more fuel cells of a fuel cell stack;
monitor one or more cell voltages of the group;
determine from said one or more cell voltages a standard deviation of said one or more cell voltages; and
adjust a fuel flow to the fuel cell stack until the standard deviation is approximately equal to the predetermined standard deviation threshold. - View Dependent Claims (21, 22, 23)
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Specification