Wind turbine and method for operating a wind turbine

US11035343B2 · kind B2 · utility

Assignee

• Wobben Properties GmbH · DE

Inventors

• Ralf Messing · Aurich, DE
• Wojciech Giengiel · Aurich, DE
• Sven Seeberg · Westerholt, DE

Key dates

• Filing date: Oct 25, 2017
• Grant date: Jun 15, 2021
• Expiry date: Jan 31, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/72
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A wind power installation with a tower, an aerodynamic rotor, wherein the aerodynamic rotor can be operated with a variable rotor speed and has a number of rotor blades respectively with an adjustable rotor blade angle, a generator for generating an electrical output power, wherein for operating the wind power installation an operating characteristic, which indicates a relationship between the rotor speed and the output power, is specified and a controller, which sets the output power in a way corresponding to the operating characteristic in dependence on the rotor speed, is provided, wherein selectable as the operating characteristic is a reduced-tonality operating characteristic, which is designed such that an excitation of a system resonance of the wind power installation is reduced as compared with an optimum-power operating characteristic, without however excluding a speed that excites this system resonance.