Monitoring device for pitch systems of wind energy systems

US8749082B2 · kind B2 · utility

Assignee

• SENVION SE · DE

Inventors

• Heinz-Hermann Letas · Rosenfeld, DE
• Matthias Peters · Halstenbek, DE

Key dates

• Filing date: May 29, 2009
• Grant date: Jun 10, 2014
• Expiry date: Mar 27, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/72
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A wind energy installation, monitoring device, and method. An exemplary wind energy installation includes a rotor including at least one blade and a generator configured to be driven by the rotor to produce electrical energy. The installation also includes a pitch device configured to vary the at least one blade of the rotor. The pitch device includes a power supply unit with a battery, an actuating drive, a monitoring unit, and a load module configured to switch the actuating drive between an operating mode and a test mode. In the test mode, the actuating drive forms a preselectable defined load for the battery. Accordingly, a high and reproducible load not dependent upon environmental conditions may be applied to conduct a stress test, even during ongoing operation.