Patent · US Active

Method and system for controlling a wind turbine to manage edgewise blade vibrations

US11525431B2 · kind B2 · utility

0Cited by

0References

17Claims

0Family size

Assignee

Vestas Wind Systems A/S · DK

Inventors

Thomas Hedegaard Bachmann · Freudenberg, DE
Anders Steen Nielsen · Aarhus, DK

Key dates

Filing date	Feb 4, 2019
Grant date	Dec 13, 2022
Priority date	—
Expiry date	Nov 1, 2039

Classification

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

Abstract

A method of controlling a wind turbine for the avoidance of edgewise vibrations. The method comprises the steps of determining a whirling mode frequency of a rotor blade of the wind turbine; determining a rotational frequency of the rotor blade corresponding to the speed of the rotor blade; determining a threshold value for the whirling mode frequency based on the rotational frequency; and, reducing the speed of the rotor blade if the whirling mode frequency substantially equals or is less than the threshold value.

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