Method for detecting a fault in a motor arrangement with an electrical machine and motor control unit
US10027263B2 · kind B2 · utility
3Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2013 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | Nov 21, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/0241
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for detecting a fault in an electrical machine, e.g., a synchronous motor, a motor control unit for controlling an electrical machine, and a motor arrangement having such a motor control unit are disclosed. According to the method, rotation angle data are determined, which data are dependent on a rotation angle of a rotor of the electrical machine in the absence of the fault. In addition, additional data are determined and allow conclusions to be drawn on the fault. A fault is detected if the rotation angle data satisfy a first criterion and the additional data satisfy a second criterion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.