Generator torque control methods
US8981584B2 · kind B2 · utility
2Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2011 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Sep 28, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wind turbine typically includes a generator and a rotating mechanical system having a natural period. The present invention relates to a method of controlling generator torque that minimizes oscillations in the speed of the generator rotor. In the event of a grid fault or transient, or a fault in the power converter, the generator torque is decreased at a substantially constant rate with respect to time. The rate at which the generator torque is decreases is proportional to the nominal rated torque of the generator and inversely proportional to an integer multiple of the natural period of the rotating mechanical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.