公开(公告)号：US20230204010A1

公开(公告)日：2023-06-29

申请号：US17923461

申请日：2021-04-29

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Anders SKAFTE ,  Gustavo Oliveira VIOLATO ,  Fabio CAPONETTI

IPC: F03D7/02 ,  F03D1/06 ,  F03D7/04

CPC classification number: F03D7/0224 ,  F03D1/06 ,  F03D7/042

Abstract: The present invention relates to blade monitoring of a wind turbine by actively promoting blade vibrations by imposing a pitch actuation signal. A method of operating a wind turbine is disclosed where for each blade of a wind turbine, vibrations of the blade are actively promoted by imposing a pitch actuation signal to the pitch actuator, and at least one parameter relating to the blade vibration is determined.

公开(公告)号：US20230151793A1

公开(公告)日：2023-05-18

申请号：US17987237

申请日：2022-11-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Leo THESBJERG ,  Søren Hove SØRENSEN ,  Gustavo Oliveira VIOLATO

IPC: F03D1/06 ,  G06F30/17

CPC classification number: F03D1/0675 ,  G06F30/17 ,  F05B2230/00

Abstract: A method of designing a wind turbine rotor blade. The method includes selecting a gravity load safety factor associated with wind turbine rotor blade fatigue loading due to gravity, that is selected to be less than a defined wind load safety factor associated with wind turbine rotor blade fatigue loading that is not due to gravity. The method includes determining a gravity-corrected design load for wind turbine rotor blade deflection, that is determined based on the selected gravity load safety factor and the defined wind load safety factor. The method includes designing a gravity-corrected wind turbine rotor blade in accordance with the determined gravity-corrected design load.

公开(公告)号：US20240068443A1

公开(公告)日：2024-02-29

申请号：US18260466

申请日：2022-01-03

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Alexander Duncan GILES ,  Jesper Sandberg THOMSEN ,  Gustavo Oliveira VIOLATO

IPC: F03D7/02 ,  F03D13/20

CPC classification number: F03D7/0298 ,  F03D7/0224 ,  F03D13/201 ,  F05B2240/912 ,  F05B2260/96

Abstract: The present invention relates to control of a wind turbine to reduce structural loading due to vibrations of the blades along the edgewise direction. A rotor control system for actuating pitch of pitch-adjustable rotor blades of a wind turbine is disclosed. Pitch modification signals are determined based on edgewise load signals for each of the rotor blades. The edgewise load signal are coordinated transformed and input into a primary whirling controller unit to provide whirling signal components which can be used for determining the pitch modification signals.

公开(公告)号：US20240254964A1

公开(公告)日：2024-08-01

申请号：US18561584

申请日：2022-05-16

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Alexander Duncan GILES ,  Jesper Sandberg THOMSEN ,  Gustavo Oliveira VIOLATO

IPC: F03D7/02 ,  F03D80/80

CPC classification number: F03D7/0224 ,  F03D80/821 ,  F05B2260/70 ,  F05B2270/331

Abstract: The present invention relates to pitch actuation of pitch-adjustable rotor blades of a three-bladed wind turbine in a situation where one blade load sensor is unavailable. Based on blade load signals and an availability signal for each of the blade load signals, combined load signals are constructed based on the available blade load signals. The combined load signals are determined based on application of a high pass filter to the blade load signals and a transform of the blade load signals to an intermediate coordinate frame, wherein, in the transform, the unavailable blade load signal is replaced with an estimated signal. A control action is performed using the combined load signals, and the resulting pitch modification signals are applied to the pitch actuator.