Wind power plant comprising a rotor blade adjusting device

US7256509B2 · kind B2 · utility

Assignee

• R E power Systems AG · DE

Inventors

• Karsten BRANDT · Kiel, DE
• Jorg Zeumer · Rendsburg, DE

Key dates

• Filing date: Aug 9, 2004
• Grant date: Aug 14, 2007
• Expiry date: Oct 12, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E70/30
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A wind power plant including a rotor having at least one angle-adjustable rotor blade, a generator that, for generating electrical power, can be directly or indirectly coupled to the rotor and, for supplying the electrical power, can be directly or indirectly coupled to an electrical grid, at least one rotor blade adjusting device for setting an angle of the rotor blade including at least one blade adjusting drive having at least one direct-current motor that can be coupled to the electrical grid via a converter, a control device, coupled to the converter and via which the control and/or regulation of the blade adjusting drive ensues, and a direct current voltage source that ensures a power supply to the blade adjusting drive in the event of grid power failure, whereby the direct current voltage source can be directly coupled to the blade adjusting drive or indirectly to the blade adjusting drive.