公开(公告)号：US12037982B2

公开(公告)日：2024-07-16

申请号：US18009942

申请日：2021-06-09

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Julio Xavier Vianna Neto ,  Anders Yde Wollesen ,  Søren Dalsgaard

IPC: F03D7/02 ,  F03D1/00 ,  F03D1/02 ,  F03D7/04 ,  F03D9/25 ,  F03D17/00

CPC classification number: F03D7/0204 ,  F03D1/02 ,  F03D17/00 ,  F03D1/181 ,  F03D7/02 ,  F03D7/04 ,  F03D7/044 ,  F03D7/045 ,  F03D7/048 ,  F03D9/257 ,  F03D17/007 ,  F03D17/029 ,  F05B2240/2212 ,  F05B2240/2213 ,  F05B2270/32 ,  F05B2270/321 ,  F05B2270/329

Abstract: The present invention relates to a multirotor wind turbine comprising at least two rotor nacelle assemblies mounted to a support arrangement via respective yawing systems, and a toe angle control system for controlling the toe angles of the rotor nacelle assemblies with respect to the support arrangement; wherein the toe angle control system is configured to operate in a first mode in which the rotor nacelle assemblies are held at positive toe angles while the wind turbine is generating power in a main production mode; wherein the toe angle control system is further configured to monitor the operating mode of the wind turbine, and to switch to a second mode in which the yawing systems of the rotor nacelle assemblies are operated to reduce the toe angles of the rotor nacelle assemblies if an operating mode-based trigger condition has been met.

公开(公告)号：US12031522B2

公开(公告)日：2024-07-09

申请号：US18499397

申请日：2023-11-01

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Sebastiaan Mulders ,  Fabio Spagnolo ,  Jesper Sandberg Thomsen ,  Julio Xavier Vianna Neto ,  Jan-Willem Van Wingerden ,  Livia Brandetti

IPC: F03D7/02 ,  F03D1/00 ,  F03D7/04

CPC classification number: F03D7/0224 ,  F03D1/00 ,  F03D7/042 ,  F05B2220/30 ,  F05B2270/101 ,  F05B2270/32

Abstract: The present invention relates to controlling a wind turbine with a scaled power coefficient where the scaled power coefficient is determined in an adjustment process. In particular is disclosed control of a wind turbine in a partial load operation mode based on a tip-speed ratio (TSR) tracking scheme which based on an estimated wind speed determines a power setpoint. The disclosed adjustment process comprises setting a scaled power coefficient as a predetermined power coefficient multiplied by a scaling factor; adding a time-varying perturbation signal to the power setpoint; determining a transfer function from the perturbation signal to a power error; evaluate the frequency response of the transfer function over a time period to determine the scaling factor which minimizes the gain of the transfer function; and setting the operating power coefficient as the scaled power coefficient.

公开(公告)号：US11994108B2

公开(公告)日：2024-05-28

申请号：US17258430

申请日：2019-07-03

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Julio Xavier Vianna Neto ,  Søren Dalsgaard ,  Anders Yde Wollesen ,  Kim Hylling Sørensen

IPC: F03D7/02 ,  F03D1/02 ,  F03D7/04

CPC classification number: F03D7/0296 ,  F03D1/02 ,  F03D7/0224 ,  F03D7/0264 ,  F03D7/042 ,  F05B2240/211 ,  F05B2240/37 ,  F05B2260/70 ,  F05B2260/964 ,  F05B2270/327

Abstract: A method of damping oscillations in a multi-rotor wind turbine and a wind turbine are provided. The wind turbine comprises a wind turbine support structure and at least a first nacelle with a first rotor and a second nacelle with a second rotor, at least one of the nacelles being located at a position away from a central longitudinal axis of the wind turbine support structure. The method comprises the steps of receiving and processing motion data, selecting a damping algorithm and generating a pitch control signal. The processing comprises determining at least one prominent oscillation mode of the wind turbine support structure and selecting a corresponding damping algorithm.

公开(公告)号：US11668283B2

公开(公告)日：2023-06-06

申请号：US17055912

申请日：2019-05-13

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Søren Dalsgaard ,  Julio Xavier Vianna Neto

IPC: F03D7/02 ,  F03D17/00

CPC classification number: F03D7/0296 ,  F03D17/00 ,  F05B2240/21 ,  F05B2270/326

Abstract: A method for detecting and controlling whirling oscillations of the blades of a wind turbine is presented. The detection of the whirling oscillations is based on measurement signal indicative of blade oscillations, and a rotation transformation of the measurement signal from a measurement frame into at least one target frame based on the whirling oscillation frequency. The rotation-transformation comprises a backward or forward rotation transformation direction relative to a rotor rotation direction. The control is based on an oscillation component obtained from the rotation-transformed measurement signal where the oscillation component is indicative of the whirling oscillation in the backward and/or forward rotation direction.