公开(公告)号：US20220325693A1

公开(公告)日：2022-10-13

申请号：US17717676

申请日：2022-04-11

Applicant: LM Wind Power A/S

Inventor： John Korsgaard ,  Jelmer Cnossen

IPC: F03D1/06

Abstract: An extendable wind turbine blade for being extended in length during operation thereof, the wind turbine blade having an exterior surface with a root region and an airfoil region and comprising a first blade segment including a first portion of the exterior surface, a second blade segment including a second portion of the exterior surface, and a connection mechanism connecting the blade segments, and being configured to bring the wind turbine blade to a retracted state, in which the portions of the exterior surface are flush and adjoining, when the wind turbine blade operates above a threshold rotational speed and to bring the wind turbine blade to an extended state, in which the portions of the exterior surface are disconnected and the blade length is at least 101% of the blade length in the retracted state, when the wind turbine blade operates below the threshold rotational speed.

公开(公告)号：US12037978B2

公开(公告)日：2024-07-16

申请号：US18032939

申请日：2021-11-19

Applicant: LM WIND POWER A/S

Inventor： Jelmer Cnossen ,  Afroz Akhtar ,  Rajkumar Sivanantham ,  Christian Frank Andersen

IPC: F03D1/06

CPC classification number: F03D1/0681 ,  F05B2260/964 ,  F05B2280/6013

Abstract: A wind turbine blade comprising a plurality of spar components extending along the longitudinal axis and providing the main bending stiffness of the wind turbine blade a major principal axis defining a structural pitch angle of at least 1° with respect to a chord line, and including: one or more suction-side spar caps each having a centre line; one or more pressure-side spar caps each having a centre line; and one or more shear webs distributed around a central shear web line and at least one of which being connected to first spar caps, wherein at least one suction-side spar cap centre lines is arranged with a first chordwise distance to the central shear web line, and at least one pressure-side spar cap centre lines is arranged with a second, different, chordwise distance to the central shear web line.

公开(公告)号：US11885293B2

公开(公告)日：2024-01-30

申请号：US17717676

申请日：2022-04-11

Applicant: LM Wind Power A/S

Inventor： John Korsgaard ,  Jelmer Cnossen

IPC: F03D1/06

CPC classification number: F03D1/0633 ,  F03D1/0675 ,  F05B2240/302

Abstract: An extendable wind turbine blade for being extended in length during operation thereof, the wind turbine blade having an exterior surface with a root region and an airfoil region and comprising a first blade segment including a first portion of the exterior surface, a second blade segment including a second portion of the exterior surface, and a connection mechanism connecting the blade segments, and being configured to bring the wind turbine blade to a retracted state, in which the portions of the exterior surface are flush and adjoining, when the wind turbine blade operates above a threshold rotational speed and to bring the wind turbine blade to an extended state, in which the portions of the exterior surface are disconnected and the blade length is at least 101% of the blade length in the retracted state, when the wind turbine blade operates below the threshold rotational speed.

公开(公告)号：US12090723B2

公开(公告)日：2024-09-17

申请号：US18039942

申请日：2021-12-20

Applicant: LM WIND POWER A/S

Inventor： Jelmer Cnossen ,  Paul Todd

IPC: B29D99/00 ,  F03D1/06 ,  F03D80/00

CPC classification number: B29D99/0028 ,  F03D1/0675 ,  F03D1/069 ,  F03D80/005 ,  F05B2240/3042 ,  F05B2260/96

Abstract: A method for manufacturing a shell 36 and 38, is disclosed. The method includes laying one or more layers of fibres, on a surface of a mould 9 to form at least a portion of a shell half structure 36 and 38. A first panel 11 defined with noise reduction members 11a is positioned adjacent to the one or more layers of fibres on the surface of the mould 9. Further, resin is infused through the one or more layers of fiber and the first panel 11 and is subsequently cured to obtain the shell half structure 36 or 38, where the first panel 11 with noise reduction members 11a adheres to the shell half structure 36 and 38 upon curing the infused resin.