公开(公告)号：US11480151B2

公开(公告)日：2022-10-25

申请号：US17271357

申请日：2019-09-13

Applicant: Vestas Wind Systems A/S

Inventor： Peter Bjørn Andersen ,  Thomas S. Bjertrup Nielsen ,  Mikkel Kiilerich Østerlund

IPC: F03D7/02 ,  F03D1/06

Abstract: A wind turbine (1) comprising a tower (2), a nacelle (3) mounted on the tower (2) via a yaw system, a hub (4) mounted rotatably on the nacelle (3), the hub (4) comprising a blade carrying structure (5), and one or more wind turbine blades (6) connected to the blade carrying structure (5) via a hinge (7) is disclosed. Each wind turbine blade (6) is thereby arranged to perform pivot movements relative to the blade carrying structure (5) between a minimum pivot angle and a maximum pivot angle. The blade carrying structure (5) is provided with one or more elements (8) configured to improve aerodynamic properties of a surface of the blade carrying structure (5) by increasing a lift and/or decreasing a drag of the blade carrying structure. The increase in lift and/or decrease in drag varies as a function of angle of attack (AOA) between the blade carrying structure (5) and the incoming wind.

公开(公告)号：US20210324831A1

公开(公告)日：2021-10-21

申请号：US17260014

申请日：2019-07-16

Applicant: Vestas Wind Systems A/S

Inventor： Thomas S. Bjertrup Nielsen ,  Peter Bjørn Andersen

IPC: F03D7/02 ,  F03D1/06

Abstract: A method for controlling a wind turbine (1) is disclosed. The wind turbine (1) comprises one or more wind turbine blades (5), each wind turbine blade (5) being connected to a blade carrying structure (4) mounted on a hub (3), via a hinge (6) at a hinge position of the wind turbine blade (5), each wind turbine blade (5) thereby being arranged to perform pivot movements relative to the blade carrying structure (4) between a minimum pivot angle and a maximum pivot angle. A maximum noise level value representing a maximum allowable noise to be generated by the wind turbine (1) is received. An optimal pair of tip speed for the wind turbine (1) and rotational speed of the wind turbine (1) is derived, based on the received maximum noise level value. The pivot angle of the wind turbine blades (5) is then adjusted to a pivot angle which results in the derived optimal pair of tip speed and rotational speed.

公开(公告)号：US10697424B2

公开(公告)日：2020-06-30

申请号：US16085760

申请日：2017-04-04

Applicant: Vestas Wind Systems A/S

Inventor： Peter Bjørn Andersen ,  Jonas Lerche Schomacker ,  Anurag Gupta ,  Henrik Kudsk

IPC: F03D1/02 ,  F03D13/20 ,  F03D7/02

Abstract: A multirotor wind turbine (1) comprising a tower structure (2) and at least one load carrying structure (3, 4), each load carrying structure (3, 4) being arranged for carrying two or more energy generating units (5, 7) comprising a rotor (6, 8). At least two of the rotors are upwind or downwind rotors (6), the energy generating units (5) comprising upwind or downwind rotors (6) being arranged with their centres of gravity at a first distance behind the tower structure (2) along a direction of the incoming wind, substantially at the same vertical level, and at opposite sides of the tower structure (2) at substantially the same second distance to the tower structure (2) along a direction substantially perpendicular to the direction of the incoming wind. The multirotor wind turbine (1) is self-yawing, even under turbulent wind conditions.

公开(公告)号：US20190048847A1

公开(公告)日：2019-02-14

申请号：US16085760

申请日：2017-04-04

Applicant: Vestas Wind Systems A/S

Inventor： Peter Bjørn Andersen ,  Jonas Lerche Schomacker ,  Anurag Gupta ,  Henrik Kudsk

IPC: F03D1/02 ,  F03D7/02 ,  F03D13/20

CPC classification number: F03D1/02 ,  F03D7/0204 ,  F03D13/20 ,  F05B2240/2211 ,  F05B2240/2213 ,  F05B2270/402 ,  Y02E10/723

Abstract: A multirotor wind turbine (1) comprising a tower structure (2) and at least one load carrying structure (3, 4), each load carrying structure (3, 4) being arranged for carrying two or more energy generating units (5, 7) comprising a rotor (6, 8). At least two of the rotors are upwind or downwind rotors (6), the energy generating units (5) comprising upwind or downwind rotors (6) being arranged with their centres of gravity at a first distance behind the tower structure (2) along a direction of the incoming wind, substantially at the same vertical level, and at opposite sides of the tower structure (2) at substantially the same second distance to the tower structure (2) along a direction substantially perpendicular to the direction of the incoming wind. The multirotor wind turbine (1) is self-yawing, even under turbulent wind conditions.