Method and system for controlling a permanent magnet machine during fault conditions
US6741060B2 · kind B2 · utility
32Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2001 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Dec 11, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Method and system for controlling a permanent magnet machine driven by an inverter is provided. The method allows for monitoring a signal indicative of a fault condition. The method further allows for generating during the fault condition a respective signal configured to maintain a field weakening current even though electrical power from an energy source is absent during said fault condition. The level of the maintained field-weakening current enables the machine to operate in a safe mode so that the inverter is protected from excess voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.