公开(公告)号：US20230235721A1

公开(公告)日：2023-07-27

申请号：US18002507

申请日：2021-06-29

Applicant: Vestas Wind Systems A/S

Inventor： Stephen Randall ,  Andrea Attorni ,  Thomas Potentier ,  Francesco Grasso

IPC: F03D1/06

CPC classification number: F03D1/0633 ,  F05B2240/221

Abstract: A horizontal axis wind turbine comprising a rotor having a plurality of blades, the rotor having a radius of at least 80 meters, the blades comprising: a root end and a tip end; a leading edge and a trailing edge; a shoulder between the root end and the tip end where a chord length defined between the leading edge and the trailing edge is at a maximum; wherein: Solr is at least 0.0140 at 0.7R; Solr is at least 0.0116 at 0.8R; Solr is at least 0.0090 at 0.9R; Solr being the combined radius specific solidity of the blades.

公开(公告)号：US20240167450A1

公开(公告)日：2024-05-23

申请号：US18549367

申请日：2022-03-09

Applicant: Vestas Wind Systems A/S

Inventor： Francesco Grasso ,  Rens Christiaan Verhoef ,  Gurmukh Singh ,  Dave Dent

IPC: F03D1/06

CPC classification number: F03D1/0641 ,  F03D1/0687

Abstract: A wind turbine blade having a length of at least 100 meters comprising: a root end (and a tip end, the blade extending in a spanwise direction from the root end to the tip end, the root end having a substantially circular profile with a root end diameter, and a profile of the blade transitioning into a lift generating profile moving in the spanwise direction from the root end towards the tip end; a leading edge and a trailing edge, the blade extending in a chordwise direction along a chord from the leading edge to the trailing edge; an inboard region extending in the spanwise direction from the root end to a distal end, the inboard region having a length defined between the root end and the distal end; wherein in the inboard region, the chord of the blade is within 5% of the root end diameter and the inboard region has a length of at least 10% span of the blade.

公开(公告)号：US11852118B2

公开(公告)日：2023-12-26

申请号：US18002571

申请日：2021-06-29

Applicant: Vestas Wind Systems A/S

Inventor： Stephen Randall ,  Andrea Attorni ,  Thomas Potentier ,  Francesco Grasso

IPC: F03D1/06

CPC classification number: F03D1/0641 ,  F05B2240/3042 ,  F05B2260/96

Abstract: A horizontal axis wind turbine comprising a rotor having a plurality of blades, the rotor having a radius R of at least 80 meters, the blades comprising: a root end and a tip end, the blades extending in a spanwise direction from the root end to the tip end; a leading edge and a trailing edge, the blades extending in a chordwise direction along a chord from the leading edge to the trailing edge; a shoulder between the root end and the tip end where a chord length defined between the leading edge and the trailing edge is at a maximum; the blades being twisted between the root end and the tip end and the twist is defined by a twist distribution curve along the spanwise direction of the blades, each blade further comprising: an inboard region between the root end of the blade and the shoulder of the blade; an outboard region between a rotor radius 0.9R and the tip end of the blade; and a mid-board region located between the inboard region and the outboard region; a noise reduction feature in the mid-board region of the blade, the noise reduction feature projecting from the trailing edge and extending from a first radial position R1 toward the tip end; wherein the twist distribution curve comprises a first inflection point in the vicinity of the first radial position R1.

公开(公告)号：US20230235723A1

公开(公告)日：2023-07-27

申请号：US18002571

申请日：2021-06-29

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Stephen Randall ,  Andrea Attorni ,  Thomas Potentier ,  Francesco Grasso

IPC: F03D1/06

CPC classification number: F03D1/0641 ,  F05B2240/3042 ,  F05B2260/96

Abstract: A horizontal axis wind turbine comprising a rotor having a plurality of blades, the rotor having a radius R of at least 80 meters, the blades comprising: a root end and a tip end, the blades extending in a spanwise direction from the root end to the tip end; a leading edge and a trailing edge, the blades extending in a chordwise direction along a chord from the leading edge to the trailing edge; a shoulder between the root end and the tip end where a chord length defined between the leading edge and the trailing edge is at a maximum; the blades being twisted between the root end and the tip end and the twist is defined by a twist distribution curve along the spanwise direction of the blades, each blade further comprising: an inboard region between the root end of the blade and the shoulder of the blade; an outboard region between a rotor radius 0.9R and the tip end of the blade; and a mid-board region located between the inboard region and the outboard region; a noise reduction feature in the mid-board region of the blade, the noise reduction feature projecting from the trailing edge and extending from a first radial position R1 toward the tip end; wherein the twist distribution curve comprises a first inflection point in the vicinity of the first radial position R1.