公开(公告)号：US20240035440A1

公开(公告)日：2024-02-01

申请号：US18257576

申请日：2021-12-17

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Thomas S. Bjertrup NIELSEN ,  Torben Juul LARSEN ,  Mikkel Kiilerich ØSTERLUND ,  Mohammed FAJAR ,  Peter BØTTCHER ,  Robert RUDOLF

IPC: F03D1/06

CPC classification number: F03D1/066 ,  F03D1/0664 ,  F03D1/0677 ,  F05B2240/302

Abstract: A pitch controlled wind turbine comprising a tower, a nacelle mounted on the tower, a hub mounted rotatably on the nacelle, and at least three wind turbine blades is disclosed. Each wind turbine blade extends between a root end connected to the hub via a pitch mechanism, and a tip end. The wind turbine further comprises at least three blade connecting members, each blade connecting member extending between a connection point on one wind turbine blade and a connection point on a neighboring wind turbine blade, the connection points being arranged at a distance from the root end and at a distance from the tip end of the wind turbine blade. The wind turbine further comprises at least three pre-tension members, each pre-tension member being connected to one of the blade connecting members and to a hub part, the pre-tension members thereby providing pre-tension in the blade connecting members.

公开(公告)号：US20250052225A1

公开(公告)日：2025-02-13

申请号：US18723623

申请日：2022-12-09

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Thomas S. Bjertrup NIELSEN ,  Robert Thomas RUDOLF ,  Torben Juul LARSEN ,  Mikkel Kiilerich ØSTERLUND

IPC: F03D1/06

Abstract: A wind turbine comprising includes a tower, a nacelle mounted on the tower, and a rotor mounted to the nacelle. The rotor comprises a hub and at least three pitchable wind turbine blades connected to the hub via respective pitch mechanisms. The airfoil profile of each blade has a thickness being the greatest distance between the windward and leeward sides orthogonal to the chord. Each blade comprises a connection point located at a first radial position between the blade root and the blade tip. The wind turbine further comprises one or more blade connecting members connected between the connection point and a corresponding connection point on a neighbouring blade. The thickness and/or the relative thickness of each blade is substantially constant or has a local minimum within an inboard portion of the blade between the blade root and the connection point.