System and method for detecting degradation in wind turbine generator bearings
US11539317B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2021 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Apr 5, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for preventing damage in a bearing of a generator includes monitoring, via a controller, one or more electrical signals of the power conversion assembly. The method also includes converting the electricals signal(s) to a frequency domain. Further, the method includes extracting one or more spectral components in frequency bands of the frequency domain around one or more known characteristic frequencies of the bearing. Moreover, the method includes determining at least one characteristic of the spectral component(s) in the frequency bands. In addition, the method includes comparing the characteristic(s) of the spectral component(s) in the frequency bands to at least one baseline value. The method further includes generating a fault signal or a baseline signal for the bearing based on the comparison. In response to the fault signal being generated, the method includes implementing a control action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.