NOISE REDUCTION MEANS FOR A WIND TURBINE BLADE, WIND TURBINE BLADE, WIND TURBINE, AND METHOD FOR NOISE REDUCTION FOR A WIND TURBINE BLADE

NOISE REDUCTION MEANS FOR A WIND TURBINE BLADE, WIND TURBINE BLADE, WIND TURBINE, AND METHOD FOR NOISE REDUCTION FOR A WIND TURBINE BLADE

Provided is a noise reduction means for a wind turbine blade comprising an active noise reduction device and a passive noise reduction device, wherein the passive noise reduction device comprises at least one serrated edge profile adapted for fixation to a trailing edge of the wind turbine blade, wh...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BUCK, Steven, ASHEIM, Michael J
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BLASTING
HEATING
LIGHTING
MACHINES OR ENGINES FOR LIQUIDS
MECHANICAL ENGINEERING
OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
PRODUCING MECHANICAL POWER
WEAPONS
WIND MOTORS
WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:Provided is a noise reduction means for a wind turbine blade comprising an active noise reduction device and a passive noise reduction device, wherein the passive noise reduction device comprises at least one serrated edge profile adapted for fixation to a trailing edge of the wind turbine blade, wherein the active noise reduction device comprises at least one unsteady pressure sensor adapted to produce an output signal corresponding to a turbulent flow condition during operation of the wind turbine blade, at least one actuator and a control unit, wherein the sensor is arranged adjacent to a serrated edge of the serrated edge profile and the control unit is adapted to control the actuator in dependence of the output signal of the sensor to emit an anti-noise signal at least partly reducing the noise generated by the wind turbine blade.