General Electric Company

Markus Koschinsky

Andreas Petersen

Roger Drobietz

Hans-Gerd Runde

Martin Duettmann

Bernd Klaas

Hendrikus J T Kooijman

A system and method for reducing audible tonality of a wind turbine caused by vibrations generated by the drivetrain assembly thereof includes a plurality of damping elements mounted at a plurality of locations on an inner surface of a tower of the wind turbine. The plurality of locations have vibration levels above a predetermined threshold. Thus, during operation of the wind turbine, the damping elements are configured to damp vibrations of the tower so as to reduce noise generated thereby.

Acoustic damping system for a wind turbine tower

A method and an apparatus for monitoring an acoustic emission of a wind turbine that includes a rotor blade. The apparatus includes at least one sensor operatively coupled to the wind turbine. The sensor is configured to detect an atmospheric condition. A control system is communicatively coupled to the sensor, and configured to control operation of the wind turbine to adjust the acoustic emission of the wind turbine based on the atmospheric condition.

Method and apparatus for controlling acoustic emissions of a wind turbine

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Rheine, Germany

Markus Koschinsky