公开(公告)号：US12135012B2

公开(公告)日：2024-11-05

申请号：US17615060

申请日：2020-05-26

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jesper Sandberg Thomsen ,  Morten Bro ,  Ian Couchman

IPC: F03D7/00 ,  F03D7/02

Abstract: The present invention relates to a rotor control system for actuating pitch of pitch adjustable rotor blades of a wind turbine in order to reduce edgewise blade vibrations. The system comprises a pitch actuation unit being arranged to receive an edgewise load signal and apply m-blade coordinate transformations, such as the Coleman transformations, to the edgewise load signal. Based on a selected signal component at either a backward whirling frequency or a forward whirling frequency, a modified modification signal is obtained.

公开(公告)号：US12049867B2

公开(公告)日：2024-07-30

申请号：US17615064

申请日：2020-05-26

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jesper Sandberg Thomsen ,  Ian Couchman ,  Morten Bro

IPC: F03D7/02

CPC classification number: F03D7/0224 ,  F03D7/0296 ,  F05B2270/327 ,  F05B2270/334 ,  F05B2270/807

Abstract: The present invention relates to a rotor control system for actuating pitch of pitch adjustable rotor blades of a wind turbine in order to reduce edgewise blade vibrations. The system comprises a pitch actuation unit being arranged to receive a torsional vibration signal and apply a filter to the torsional vibration signal to couple the torsional vibration signal to an edgewise vibration of the rotor blades. An m-blade coordinate transformation, such as the Coleman transformation, is applied to the filtered torsional vibrational signal to obtain pitch modification signals.

公开(公告)号：US20220220936A1

公开(公告)日：2022-07-14

申请号：US17615060

申请日：2020-05-26

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jesper Sandberg THOMSEN ,  Morten Bro ,  Ian COUCHMAN

IPC: F03D7/02

Abstract: The present invention relates to a rotor control system for actuating pitch of pitch adjustable rotor blades of a wind turbine in order to reduce edgewise blade vibrations. The system comprises a pitch actuation unit being arranged to receive an edgewise load signal and apply m-blade coordinate transformations, such as the Coleman transformations, to the edgewise load signal. Based on a selected signal component at either a backward whirling frequency or a forward whirling frequency, a modified modification signal is obtained.