Electrical defect detection in a generator
US10868484B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2019 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Nov 11, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2101/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for monitoring and detecting defects in a doubly-fed asynchronous machine including a stator and a rotor, said method implemented by computer means. The method comprises: a. receiving a current and a voltage measurement of the stator, and a measurement of relative rotation speed between the stator and the rotor; b. deducing a stat or power as a function of time; c. performing a harmonic analysis on the resulting stator power including applying a wavelet transform to the stator power; d. comparing the resulting harmonic representation to a reference harmonic representation, where said reference harmonic representation is selected as a function of the rotation speed measurement, so as to detect possible defects in said machine as a function of possible differences identified by the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.