Apparatus for diagnosing a state of a fuel cell stack and method thereof
US9494655B2 · kind B2 · utility
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9Claims
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Assignee
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Key dates
| Filing date | Dec 10, 2014 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Jul 5, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are an apparatus and a method for diagnosing a state of a fuel cell stack with high accuracy by reducing the deviation of a harmonic component although the voltage variation of the fuel cell stack is substantial. According to the present invention, a harmonic component is detected by converting the difference between the voltage of the fuel cell stack and a moving average voltage to a frequency and the state of the fuel cell stack is diagnosed based on the size of the detected harmonic component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.