ATTACHED-TYPE FLEXIBLE SERRATED TRAILING EDGE FOR WIND TURBINE NOISE REDUCTION

摘要

PURPOSE: A serrated trailing edge for reducing the noise of a wind turbine is provided to minimize a collision with vortex by being rotated or bent when the angle of attack introduced into a blade of the wind turbine is increased. CONSTITUTION: An apparatus for reducing the noise of a wind turbine blade comprises a serrated trailing edge (120) and a fixing part. The serrated trailing edge is installed in the rear side (113) of the blade and is rotated to maximize noise reduction according to the angle variation of attack. The fixing part connects the serrated trailing edge and the rear side of the blade. The serrated trailing edge is flexibly inclined to maximize noise reduction according to the angle variation of attack without resonance.