Method and testing device for testing rotor blades

US11885299B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Moritz Batge · Bremen, DE
• Malo Rosemeier · Bremen, DE
• Bernd Haller · Rastede, DE
• Kwangtae Ha · Bremen, DE
• Willi Wroblewski · Lilienthal, DE
• Florian Sayer · Bremen, DE

Key dates

• Filing date: Oct 24, 2019
• Grant date: Jan 30, 2024
• Expiry date: Feb 6, 2041

Classification

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

Abstract

A method for testing a rotor blade of a wind turbine may include predefining a setpoint bending moment distribution. At least two active load-introducing means may be provided which each engage on a load frame. A first of the at least two active load-introducing means may be configured for introducing load in a pivot direction of the rotor blade and a second of the at least two active load-introducing means may be configured for introducing load in an impact direction of the rotor blade. Also provided is at least one passive load-introducing means. A cyclic introduction of load is effected by the at least two active load-introducing means, where a load introduction frequency of the first active load-introducing means and a load introduction frequency of the second active load-introducing means are selected such that the ratio thereof is rational. A testing device for carrying out the method is also provided.