Patent · US Active

Method and system for operating a wind energy installation

US8247913B2 · kind B2 · utility

4Cited by

3References

18Claims

0Family size

Assignee

R E power Systems AG · DE

Inventors

Martin Von Mutius · Ascheffel, DE
Roland Weitkamp · Belm, DE
Jochen Anemueller · Hasbergen, DE

Key dates

Filing date	Apr 22, 2009
Grant date	Aug 21, 2012
Priority date	—
Expiry date	Mar 1, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for operating a wind energy installation and a system for implementing the method. An oblique incident flow value, which represents the difference between the wind direction and the direction of a rotor axis of the wind energy installation, and a load value, which represents the load state of the wind energy installation, are determined. A total load value is determined based on the load value and the oblique incident flow value. The rotor rotation speed is reduced when the total load value is above a first limit value. The wind energy installation is shut down when, in addition, a second limit value is exceeded. The method makes it possible to react objectively to oblique incident flows and can reduce a load on a wind energy installation without causing large yield losses.

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