Filter capacitor degradation detection apparatus and method
US9653984B2 · kind B2 · utility
4Cited by
39References
15Claims
0Family size
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Key dates
| Filing date | Aug 9, 2012 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Aug 27, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/4585
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Power conversion systems and methods are presented for detecting input filter capacitor degradation or approach of end of operational life based on filter capacitor current measurements using single and/or dual threshold comparisons for computed instantaneous sum of squares of filter currents or power values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.