公开(公告)号：US11038400B2

公开(公告)日：2021-06-15

申请号：US16720128

申请日：2019-12-19

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Poul Brandt Christensen ,  Jesper Sandberg Thomsen ,  Gert Karmisholt Andersen

IPC: H02K7/18 ,  F03D9/25 ,  F03D80/80 ,  F03D7/02 ,  H02P9/02

Abstract: A method of controlling a wind turbine is provided. The method comprises providing a primary power reference signal and a secondary power reference signal. The primary power reference signal is limited according to a primary signal limit. The secondary power reference signal is limited according to a secondary signal limit. The primary power reference signal and the secondary power reference signal are combined to provide a combined power reference signal, which is provided to a power or torque control system of the wind turbine.

公开(公告)号：US10982651B2

公开(公告)日：2021-04-20

申请号：US16079772

申请日：2017-02-24

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Fabio Caponetti ,  Jesper Sandberg Thomsen ,  Jacob Deleuran Grunnet ,  Poul Brandt Christensen

IPC: F03D7/02 ,  F03D80/00 ,  F03D1/00 ,  F03D7/04 ,  F03D80/80

Abstract: A method for damping an oscillation of a tower of a wind turbine is disclosed, wherein a pitch angle of each of the one or more rotor blades is individually adjustable, the method comprising damping the oscillation of the tower by pitching each rotor blade individually according to tower damping pitch control signals, wherein each tower damping pitch control signal comprises a first periodic component, where a first frequency of the first periodic component corresponds to a frequency difference between a tower frequency of the oscillation of the tower and a rotor frequency of a rotation of the rotor, and where a second periodic component has been reduced or removed. A second frequency of the second periodic component corresponds to a frequency sum of the tower frequency and the rotor frequency.

公开(公告)号：US10968888B2

公开(公告)日：2021-04-06

申请号：US16336015

申请日：2017-09-20

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Poul Brandt Christensen ,  Claus Thybo ,  Jesper Sandberg Thomsen

IPC: F03D1/00 ,  F03D7/02 ,  F03D17/00 ,  F03D1/06 ,  F03D7/04

Abstract: A method for controlling a wind turbine is disclosed, the wind turbine comprising a set of wind turbine blades (1), each wind turbine blade (1) being provided with at least one air deflector (2) being movable between an activated position in which it protrudes from a surface of the wind turbine blade (1) and a de-activated position. The occurrence of an event causing a change in operational conditions is registered, and a new operating state for the wind turbine is determined, the new operating state meeting requirements of the changed operational conditions. The air deflectors (2) of the wind turbine blades (1) and pitch angles of the wind turbines blades (1) are controlled in order to reach the new operating state for the wind turbine, and in such a manner that the control of the pitch angles of the wind turbine blades (1) is performed while taking information regarding the control of the air deflectors (2) into account.

公开(公告)号：US12116985B2

公开(公告)日：2024-10-15

申请号：US17922413

申请日：2021-04-22

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Torsten Lund ,  John Godsk Nielsen ,  Gert Karmisholt Andersen ,  Kouroush Nayebi ,  Poul Brandt Christensen ,  Germán Claudio Tarnowski ,  Esmaeil Ebrahimzadehveshareh

IPC: F03D9/00 ,  F03D9/11 ,  F03D9/25 ,  H02P9/10 ,  H02J3/32 ,  H02J7/00 ,  H02P101/15 ,  H02P103/20

CPC classification number: F03D9/11 ,  F03D9/255 ,  H02P9/105 ,  F05B2270/1033 ,  H02J3/32 ,  H02J7/00712 ,  H02J2207/20 ,  H02J2207/50 ,  H02J2300/28 ,  H02P2101/15 ,  H02P2103/20

Abstract: The invention relates to a method for controlling power generation of a VSM wind turbine. The wind turbine comprises a machine side converter, a line side converter, a DC link, and an electric storage device electrically connected to the DC link. The method comprises determining a first power control signal to the machine side converter, determining a second power control signal for controlling a desired output power of the line side converter based on a storage device voltage error, and a power production reference, and determining a charging current reference for controlling charging and discharging of the electric storage device based on a DC-link voltage error.

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.

公开(公告)号：US11215163B2

公开(公告)日：2022-01-04

申请号：US16614839

申请日：2018-05-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Fabio Caponetti ,  Jesper Sandberg Thomsen ,  Poul Brandt Christensen

IPC: F03D7/02 ,  F03D9/25 ,  F03D13/35 ,  F03D7/04

Abstract: The present invention relates to control of a wind turbine where nacelle vibration is reduced by use of blade pitching or generator torque modulation. The nacelle vibrations are reduced based on a position signal of the nacelle. An actuator signal is determined based on the position signal and applied to the actuator capable of reducing nacelle vibration. The actuator signal is gain adjusted based on a separation between the rotor frequency and tower vibration frequency.

公开(公告)号：US20190383265A1

公开(公告)日：2019-12-19

申请号：US16440451

申请日：2019-06-28

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Tobias Gybel HOVGAARD ,  Poul Brandt Christensen

IPC: F03D7/02 ,  F03D9/25 ,  F03D9/00

Abstract: The present invention relates to a method for controlling a power plant for reducing spectral disturbances in an electrical grid being operative connected to the power plant, the power plant comprising a plant controller, at least one wind turbine and at least one auxiliary energy source, wherein the at least one wind turbine comprises a rotor adapted to drive a power generator via a shaft, wherein the generator is connectable with the electrical grid, and at least one damping controller configured to compensate structural oscillations of the wind turbine by controlling a torque on the shaft, wherein the at least one damping controller is capable of setting a limit of a control action on the shaft, the method comprising the steps of determining disturbance information for the power plant in the form of an electrical disturbance at a point of measurement electrically connected to the power plant, determining set-points for the at least one auxiliary energy source based on the determined disturbance information, and assigning the set-points to the at least one auxiliary energy source in order to counteract at least part of the electrical disturbance at the point of measurement using at least part of an available amount of energy from the at least one auxiliary energy source.

公开(公告)号：US20190078555A1

公开(公告)日：2019-03-14

申请号：US15767258

申请日：2016-10-11

Applicant: Vestas Wind Systems A/S

Inventor： Martin Ansbjerg Kjær ,  Frank Møller Hansen ,  Jacob Hviid Nielsen ,  Jesper Lykkegaard Neubauer ,  Poul Brandt Christensen ,  Fabio Caponetti ,  Christian Skallebæk ,  Robert Grøn-Stevens ,  Kasper Zinck Østergaard

IPC: F03D7/02

Abstract: There is provided a method for controlling a hydraulic pitch force system (220) so as to reduce or eliminate a decrease in hydraulic oil pressure (241) if a hydraulic system parameter value is outside a hydraulic system parameter range, the method comprising: Obtaining (690) the hydraulic system parameter value, and operating the hydraulic pitch force system (220) according to a reduced mode (692) if the hydraulic system parameter value is outside the hydraulic system parameter range, wherein in the reduced mode one or more pitch based activities are reduced (694) or suspended. An advantage thereof may be that it enables keeping the wind turbine in production in certain instances rather than shutting down the wind turbine. In aspects, there is furthermore presented a computer program product, a pitch control system (250) and a wind turbine (100).

公开(公告)号：US09957951B2

公开(公告)日：2018-05-01

申请号：US15045800

申请日：2016-02-17

Applicant: Vestas Wind Systems A/S

Inventor： Poul Brandt Christensen

IPC: F03D7/02 ,  F03D1/06 ,  F03D9/00 ,  F03D7/04 ,  F03D9/25 ,  F03D13/20

CPC classification number: F03D7/0272 ,  F03D1/06 ,  F03D7/0292 ,  F03D7/043 ,  F03D9/25 ,  F03D13/20 ,  F05B2270/1032 ,  F05B2270/331 ,  Y02E10/721 ,  Y02E10/723

Abstract: A method of controlling a wind turbine having a rotor and a generator for producing power, the wind turbine being designed for a nominal load, the method comprising the steps of: determining a current load acting on at least a part of the wind turbine; calculating a load error, the load error representing the difference between the nominal load and the current load; controlling the wind turbine based on the load error; wherein the step of controlling the wind turbine comprises altering a parameter of the wind turbine so that the power or torque produced by the generator is altered.