公开(公告)号：US20200072185A1

公开(公告)日：2020-03-05

申请号：US16118533

申请日：2018-08-31

Applicant: General Electric Company

Inventor： Guannan Wang ,  Benoit Philippe Petitjean ,  Andreas Herrig ,  Roger Drobietz

IPC: F03D1/06

Abstract: A rotor blade assembly for a wind turbine includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a blade tip and a blade root. The rotor blade assembly also includes at least one noise reducer adjacent to the trailing edge. The noise reducer(s) includes at least one serration extending beyond the trailing edge in a chord-wise direction of the rotor blade. The serration(s) also includes a suction side surface and a pressure side surface. The suction side surface defines a first radius of curvature in the chord-wise direction and the pressure side surface defines a second radius of curvature in the chord-wise direction. Further, the first radius of curvature may be larger than the second radius of curvature such that the suction side surface is flatter than the pressure side surface or vice versa.

公开(公告)号：US10746157B2

公开(公告)日：2020-08-18

申请号：US16118533

申请日：2018-08-31

Applicant: General Electric Company

Inventor： Guannan Wang ,  Benoit Philippe Petitjean ,  Andreas Herrig ,  Roger Drobietz

IPC: F04D29/66 ,  F03D1/06

Abstract: A rotor blade assembly for a wind turbine includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a blade tip and a blade root. The rotor blade assembly also includes at least one noise reducer adjacent to the trailing edge. The noise reducer(s) includes at least one serration extending beyond the trailing edge in a chord-wise direction of the rotor blade. The serration(s) also includes a suction side surface and a pressure side surface. The suction side surface defines a first radius of curvature in the chord-wise direction and the pressure side surface defines a second radius of curvature in the chord-wise direction. Further, the first radius of curvature may be larger than the second radius of curvature such that the suction side surface is flatter than the pressure side surface or vice versa.

公开(公告)号：US10767623B2

公开(公告)日：2020-09-08

申请号：US15952498

申请日：2018-04-13

Applicant: General Electric Company

Inventor： Guannan Wang ,  Benoit Philippe Armand Petijean ,  Roger Drobietz

IPC: F03D1/06

Abstract: A rotor blade assembly for a wind turbine. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a blade tip and a blade root. The rotor blade assembly also includes at least one noise reducer secured at the trailing edge. The noise reducer(s) includes at least one serration having a base portion and at least one side edge feature extending from the base portion. Further, the base portion extends along a first plane. The side edge feature(s) extends out of the first plane so as to reduce vortices generated by the serration(s).

公开(公告)号：US20190316565A1

公开(公告)日：2019-10-17

申请号：US15952498

申请日：2018-04-13

Applicant: General Electric Company

Inventor： Guannan Wang ,  Benoit Philippe Armand Petitjean ,  Roger Drobietz

IPC: F03D1/06

Abstract: A rotor blade assembly for a wind turbine. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a blade tip and a blade root. The rotor blade assembly also includes at least one noise reducer secured at the trailing edge. The noise reducer(s) includes at least one serration having a base portion and at least one side edge feature extending from the base portion. Further, the base portion extends along a first plane. The side edge feature(s) extends out of the first plane so as to reduce vortices generated by the serration(s).