Method and apparatus for reduction of fatigue and gust loads on wind turbine blades
US9689374B2 · kind B2 · utility
3Cited by
23References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2014 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Oct 15, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An adjustable lift regulating device (30, 32, 40, 50, 52, 56, 60, 68, 72, 76) on an inboard portion of a wind turbine blade (28). The lift regulating device is activated to reduce lift on the inboard portion of the blade by causing flow separation (41) on the suction side (22) of the blade. To compensate for the lost lift, the blade pitch is increased to a running pitch that facilitates stalling on the outer portion of the blade in gusts. This provides passive reduction of fatigue and extreme loads from gusts while allowing full power production under non-gust conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.