Patent · US Active

Method for the active damping of the drive train in a wind energy plant

US7501798B2 · kind B2 · utility

5Cited by

3References

9Claims

0Family size

Assignee

Nordex Energy GmbH · DE

Inventors

Malte Laubrock · Hamburg, DE
Thomas Paul Woldmann · Hamburg, DE
Sören Bilges · Hamburg, DE

Key dates

Filing date	Jul 11, 2007
Grant date	Mar 10, 2009
Priority date	—
Expiry date	Oct 2, 2027

Classification

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

Abstract

A method for the active damping of a drive train in wind energy plant, with the following steps: the actual value of the generator rotational speed is acquired and amplified via an oscillatory delay element, the oscillatory delay element has a predetermined natural oscillation frequency (ωE), which is smaller than the smallest natural frequency of the drive train, and a difference between the actual value of the rotational speed and the amplified value for the rotational speed is connected to a controller as actuating variable, which determines a correction moment for a generator control.

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