Method for the operation of a wind energy plant at sudden voltage changes in the grid

US8067845B2 · kind B2 · utility

Assignee

• Nordex Energy GmbH · DE

Inventors

• Matthias Thulke · Berlin, DE
• Gunnar Schmidt · Wolfenbüttel, DE
• Thomas Frese · Norderstedt, DE
• Eberhard Voss · Jörnstorf, DE

Key dates

• Filing date: Jun 18, 2007
• Grant date: Nov 29, 2011
• Expiry date: Sep 28, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P80/10
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for the operation of a wind energy plant with a rotor, which transfers a driving moment to a generator via a drive train, wherein the generator provides a pre-settable generator moment acting opposite to the driving moment and is connectable to a grid, characterised in that after a sudden voltage change in the grid, the generator moment is controlled depending from the phase position of a torsional vibration of the drive train.