Optimization of power production in a wind turbine at below rated power
US9683551B2 · kind B2 · utility
2Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2012 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Dec 9, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The rotor blades of a wind turbine each have a plurality of fiber-optic pressure variation sensors which can detect the onset of a stall condition. The output of the stall condition sensors is input to a stall count circuit which increases a stall count signal each time a stall indication is received. The stall count signal is decayed exponentially over time and the current signal is summed with the decayed signal from a previous sampling period to form a value from which a stall margin is determined. An λ:θ curve of tip speed to wind speed ratio λ against pitch angle reference θ is then determined from the stall margin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.