公开(公告)号：US12276250B2

公开(公告)日：2025-04-15

申请号：US18286886

申请日：2022-05-03

Applicant: LM WIND POWER A/S

Inventor： Andreas Herrig ,  Trevor Howard Wood ,  Guannan Wang

IPC: F03D1/06

Abstract: A wind turbine blade (10) comprising a pressure side (24) and a suction side (26), a leading edge (18) and a trailing edge (20). At least a portion of the blade (10) located in a trailing edge region (142) at or adjacent to the trailing edge (20) is a noise reducing portion defining an exposed surface and comprising a plurality of sound reducing or sound absorbing acoustic resonators (58), each of the resonators (58) comprising an opening (55) in the exposed surface and a cavity (56) having a length L between the opening (55) and a bottom (57) of the cavity opposite the opening (55).