Method for detecting a fault in an induction machine
US8552757B2 · kind B2 · utility
2Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 8, 2009 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Mar 25, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/0241
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention concerns a method for detecting a fault in a rotating field machine, in which current components are analysed in a flux-based, particularly rotor-flux-based, coordinate system a flux-forming current component being subjected to a frequency analysis in the flux-based, particularly rotor-flux-based, coordinate system. It is endeavored to provide a simple method for an early detection of faults. For this purpose, a current operating point is detected for at least one predetermined supply frequency (fsp), said operating point being compared to a former operating point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.