公开(公告)号：US20230258153A1

公开(公告)日：2023-08-17

申请号：US18011101

申请日：2021-06-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Peter FYNBO ,  Torben Ladegaard BAUN ,  Jesper Lykkegaard NEUBAUER

IPC: F03D7/02 ,  F03D80/80

CPC classification number: F03D7/0204 ,  F03D80/88 ,  F05B2270/329 ,  F05B2270/80

Abstract: A method of yawing a nacelle in a wind turbine having a yawing assembly comprising a drive-ring and a plurality of drives configured to exert a torque during movement along the drive-ring and thereby move the nacelle relative to the tower. The drive-ring is made of drive-ring segments joined in intersections. The method comprises defining a location for each intersection, defining a reference torque exerted by the drives when moving along the drive-ring, defining a reduced torque being lower than the reference torque, determining when a crossing drive moves across the location of an intersection, and to increase the lifetime, exerting the reduced torque by the crossing drive.

公开(公告)号：US20230151796A1

公开(公告)日：2023-05-18

申请号：US17916341

申请日：2021-03-29

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Peter FYNBO ,  Jesper Lykkegaard NEUBAUER ,  Jens-Kristian Egsgaard LANGKJÆR ,  Niels Henrik PEDERSEN

IPC: F03D7/02 ,  F03D7/04

CPC classification number: F03D7/0204 ,  F03D7/047 ,  F05B2240/40 ,  F05B2270/1095 ,  F05B2270/111

Abstract: Techniques for controlling the yaw of a wind turbine system by controlling a plurality of yaw drive actuators.
When the yaw drive actuators are applying the same torque to all the motors, this can lead to some motors overspeeding, if the motor is not engaged when the yaw system is activated.
Therefore, if the actual motor speed reference of a yaw drive actuator is higher than a specific motor speed reference, then an output signal to reduce the actual motor speed reference is applied to the yaw drive actuators with an actual motor speed reference higher than the specific motor speed reference.

公开(公告)号：US20230151797A1

公开(公告)日：2023-05-18

申请号：US17920675

申请日：2021-04-22

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Thorkild Møller BERTELSEN ,  Morten Bagger SØGAARD ,  Jesper Lykkegaard NEUBAUER ,  Tiago Telmo PINTO DE OLIVEIRA ,  Peter FYNBO ,  Martin Møller SØRENSEN ,  Carsten Krogh NIELSEN ,  Asier BERRA ,  Anders Hjarnø JØRGENSEN

IPC: F03D7/02

CPC classification number: F03D7/0204 ,  F05B2260/902 ,  F05B2270/602

Abstract: The invention relates to a method for controlling a wind turbine system, more particular for a controlled sliding strategy to lower loads on the yaw system by controlling mechanical brakes and motor brakes in the yaw drive actuators. When the yaw system being in the non-yawing operational state, and the mechanical brake(s) being in an engaged state, and the yaw controller determines or receives a signal indicative of a yaw moment, and if the signal indicative of a yaw moment is above a signal threshold, then the yaw controller sends a braking signal to the yaw drive actuators to enter the motors into the brake state to apply a braking torque.

公开(公告)号：US20230038784A1

公开(公告)日：2023-02-09

申请号：US17916284

申请日：2021-03-29

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Peter FYNBO ,  Jesper Lykkegaard NEUBAUER ,  Jens-Kristian Egsgaard LANGKJÆR ,  Niels Henrik PEDERSEN

IPC: F03D7/04 ,  F03D7/02

Abstract: Techniques for controlling the yaw of a wind turbine system by controlling a plurality of yaw drive actuators. Based on a requested motor speed reference as an input signal, and a mean motor speed reference as a feedback signal, the method determines a required motor torque reference as an output signal for the plurality of yaw drive actuators. The plurality of yaw drive actuators rotates a nacelle or a structure comprising a plurality of nacelles such that an even load distribution is provided for the plurality of yaw drive actuators.