Systems and methods for predicting polarization curves in a fuel cell system
First Claim
1. A system to predict a performance metric of a fuel cell (FC) stack, the system comprising:
- a plurality of sensors in communication with the FC stack;
a performance metric prediction system configured to;
determine a current density based on an input from at least one of the plurality sensors at a plurality of time periods;
calculate a first parameter during a first time period in which the current density is below a lower threshold;
calculate a second parameter during a second time period in which the current density is above an upper threshold;
selectively adjust a FC polarization curve over time based upon the first parameter and the second parameter;
predict a performance metric of the FC stack based upon the FC polarization curve; and
a control system configured to implement a control action based upon the performance metric.
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Accused Products
Abstract
The present disclosure relates to systems and methods that may be used to predict a performance metric of a fuel cell. A system consistent with the present disclosure may include sensors in communication with the fuel cell stack, a performance metric prediction system, and a control system. The performance metric prediction system may determine a current density based on inputs provided by the sensors at a plurality of time periods, calculate a first parameter while the current density is below a lower threshold, and calculate a second parameter while the current density is above an upper threshold. The first parameter and the second parameter may be used to selectively adjust a fuel cell polarization curve over time. Based upon the polarization curve, a performance metric of the fuel cell stack may be predicted. The control system may implement a control action based upon the performance metric.
29 Citations
20 Claims
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1. A system to predict a performance metric of a fuel cell (FC) stack, the system comprising:
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a plurality of sensors in communication with the FC stack; a performance metric prediction system configured to; determine a current density based on an input from at least one of the plurality sensors at a plurality of time periods; calculate a first parameter during a first time period in which the current density is below a lower threshold; calculate a second parameter during a second time period in which the current density is above an upper threshold; selectively adjust a FC polarization curve over time based upon the first parameter and the second parameter; predict a performance metric of the FC stack based upon the FC polarization curve; and a control system configured to implement a control action based upon the performance metric. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for predicting a performance metric of a fuel cell (FC) stack, the method comprising:
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receiving a plurality of inputs from a plurality of sensors; determining a current density based on at least one of the plurality of inputs at a plurality of time periods; calculating a first parameter during a first time period in which the current density is below a lower threshold; calculating a second parameter during a second time period in which the current density is above an upper threshold; selectively adjusting a fuel cell polarization curve over time based upon the first parameter and the second parameter; predicting a performance metric of the fuel cell stack based upon the fuel cell polarization curve; and implementing a control action based upon the performance metric. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification