Method for checking out-of-step of synchronous motor
US9887647B2 · kind B2 · utility
1Cited by
4References
17Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 27, 2013 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | Dec 24, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/0241
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for checking an out-of-step of a synchronous motor includes detecting three-phase currents of the synchronous motor; determining whether a relationship between the three-phase currents satisfies a preset requirement; and if no, determining that the synchronous motor is out of step. It is determined that the synchronous motor is out of step when amplitudes of each current of the three-phase currents are not equal or when the phase difference between the three-phase currents is not 120°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.