Patent · US Active

Operating a wind turbine using estimated wind speed while accounting for blade torsion

US11441542B2 · kind B2 · utility

0Cited by

2References

19Claims

0Family size

Assignee

Vestas Wind Systems A/S · DK

Inventors

Martin Atzler · Aarhus, DK
Thomas Scheel · Stolberg, DE
Lars Finn Sloth Larsen · Hjørring, DK

Key dates

Filing date	Nov 20, 2015
Grant date	Sep 13, 2022
Priority date	—
Expiry date	Sep 25, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/72
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for estimating a wind speed at a wind turbine is disclosed, said wind turbine comprising a rotor carrying a set of wind turbine blades, each wind turbine blade having a variable pitch angle. A blade torsion contribution, representing torsion introduced in the wind turbine blades, is derived, based on an obtained rotational speed, ω, of the rotor, and an obtaining a pitch angle, θ, of the wind turbine blades. An adjusted pitch angle, θ′, is calculated as a sum of the obtained pitch angle, θ, and the derived blade torsion contribution, and a wind speed, vest, is estimated, based on the obtained rotational speed, ω, and the calculated adjusted pitch angle, θ′. An accurate and reliable estimate for the wind speed is thereby obtained. The wind turbine may be controlled in accordance with the estimated wind speed, vest.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.