公开(公告)号：US20220220937A1

公开(公告)日：2022-07-14

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

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.