公开(公告)号：US12031523B2

公开(公告)日：2024-07-09

申请号：US17787911

申请日：2020-12-18

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Esmaeil Ebrahimzadehveshareh ,  Torsten Lund ,  Mark Faber ,  Poul Brandt Christensen ,  Gert Karmisholt Andersen

IPC: F03D7/00 ,  F03D7/02 ,  H02P23/04

CPC classification number: F03D7/0272 ,  H02P23/04 ,  F05B2270/327

Abstract: The invention relates to a method for damping drive train oscillations of a VSM configured wind turbine. The method comprises determining a drive train damping power signal based on speed signal representing a generator speed, determining a power deviation based on a combination of a power reference for a desired power production, the drive train damping power-signal, a grid power supplied by the line side converter to the grid and a damping power, determining a virtual synchronous machine angle based on the power deviation so that the derivative of the virtual synchronous machine rotational speed is indicative of the power deviation, determining a converter reference for controlling the line side converter to generate the desired active power based on the virtual synchronous machine angle and a voltage reference for a voltage amplitude to be generated by the line side converter, and applying the converter reference to the line side converter.