Airflow configuration for a wind turbine rotor blade

Patent metadata

Field	Value
Publication number	US-10180125-B2
Application number	US-201514690726-A
Country	US
Kind code	B2
Filing date	Apr 20, 2015
Priority date	Apr 20, 2015
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

The present disclosure is directed to a rotor blade assembly for a wind turbine. The rotor blade assembly includes a rotor blade having exterior surfaces defining pressure and suction sides, and leading and trailing edges extending in a generally span-wise direction between an inboard region and an outboard region. The inboard region includes a blade root having a rounded trailing edge. Further, the rotor blade assembly further includes at least one airflow separation element mounted to either or both of the pressure or suction sides of the rotor blade within the inboard region and adjacent to the rounded trailing edge. In addition, the at least one airflow separation element corresponds to a contour of the pressure side or the suction side of the rotor blade. As such, the at least one airflow separation element is configured to provide a fixed airflow separation location in the inboard region during standard operation.

First claim

What is claimed is:

1. A rotor blade assembly for a wind turbine, the rotor blade assembly comprising:
a rotor blade having exterior surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge each extending in a generally span-wise direction between an inboard region and an outboard region, the inboard region comprising a rounded trailing edge; and,
separate and opposing airflow separation elements, the opposing airflow separation elements comprising airflow separation plates, one of the airflow separation plates mounted to the pressure side of the rotor blade and another of the airflow separation plates mounted to the suction side of the rotor blade within the inboard region and adjacent to the rounded trailing edge, each of the airflow separation plates comprising a chord-wise length defined by a proximal end and a distal end, the chord-wise length extending in a chord-wise direction of the rotor blade, the chord-wise length being completely located within a chord of the rotor blade,
wherein the opposing airflow separation plates correspond to a contour of the pressure side and the suction side of the rotor blade, respectively, and
wherein the distal ends of the opposing airflow separation plates on the pressure side and the suction side of the rotor blade provide a fixed airflow separation location in the inboard region during standard operation that aligns with the rounded trailing edge of the rotor blade in a vertical direction, and further comprising at least one structural component configured between the airflow separation plates and a corresponding surface of the rotor blade.

2. The rotor blade assembly of claim 1 , wherein the proximal ends of the airflow separation elements are fixed to one of the pressure side or the suction side of the rotor blade.

3. The rotor blade assembly of claim 1 , wherein the at least one structural component comprises at least one of a rod, a wedge, or a web.

4. The rotor blade assembly of claim 1 , further comprises a plurality of structural components spaced apart along a span of the rotor blade.

5. The rotor blade assembly of claim 1 , wherein the opposing airflow separation elements are located from about 90% chord to about 95% chord from the leading edge of the rotor blade.

Assignees

• Gen Electric

Inventors

• Carroll Christian A
• Yarbrough Aaron A
• Herr Stefan

Classifications

• F03D1/0675 Primary

  of the blades · CPC title

• F05B2240/301

  Cross-section characteristics · CPC title

• F03D1/0633

  of the blades · CPC title

• Y02E10/721

  Cross-Sectional Technologies · mapped topic

• F05B2240/305

  Flaps, slats or spoilers · CPC title