Overspeed protection for sensorless electric drives
US7535684B2 · kind B2 · utility
7Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2007 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Nov 18, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Overspeed protection of sensorless electric drives is needed in the aerospace industry. Methods for overspeed protection may include software implementations, hardware implementations or combinations thereof. Typical high-speed rotating machinery is designed to sustain overspeed operation of up to 50% beyond maximum normal operation. This requirement leads to substantial penalties in weight and volume. The methods of the present invention may allow for an opportunity to reduce this overspeed design to about 5 to 15%, typically about 7%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.