公开(公告)号：US12116985B2

公开(公告)日：2024-10-15

申请号：US17922413

申请日：2021-04-22

申请人： VESTAS WIND SYSTEMS A/S

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

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

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

摘要： 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

申请人： VESTAS WIND SYSTEMS A/S

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

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

CPC分类号： F03D7/0272 ,  H02P23/04 ,  F05B2270/327

摘要： 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：US20230344230A1

公开(公告)日：2023-10-26

申请号：US17832223

申请日：2022-06-03

申请人： VESTAS WIND SYSTEMS A/S

发明人： John Godsk NIELSEN ,  Torsten Lund ,  Hamid Soltani ,  Gert Karmishoit Andersen

IPC分类号： H02J3/16

CPC分类号： H02J3/16 ,  H02J2300/28

摘要： A grid side inverter system includes a grid side inverter, a phase locked loop controller arranged to determine a phase of a dq-frame dependent on a monitored grid voltage vector in the dq-frame and a reference grid voltage vector in the dq-frame, a current reference decision unit arranged to generate a reduction of at least one of an active and a reactive current reference, wherein a decision to generate the reduction is based on an electrical parameter relating to the phase difference of the monitored grid voltage vector and the PLL vector, a current controller arranged to determine control signals for the grid side inverter for controlling generation of active and reactive power to the grid dependent on the active and reactive current references and monitored active and a reactive grid currents in the dq-frame.

公开(公告)号：US11495967B2

公开(公告)日：2022-11-08

申请号：US17278208

申请日：2019-09-11

申请人： VESTAS WIND SYSTEMS A/S

发明人： Torsten Lund ,  Ciprian Biris ,  Kent Tange ,  Duy Duc Doan ,  Gert Karmisholt Andersen

IPC分类号： H02J3/00 ,  H02J3/01 ,  H02J3/38

摘要： This invention relates to a method of controlling at least one wind turbine of a plurality of wind turbines connected to an electrical grid at a predefined point in the electrical grid. The wind turbine comprises a DC link connecting a generator side converter to a line side converter, where the line side converter is controlled according to a modulation index requested by a power converter controller. The method comprises determining a harmonic frequency signal indicative of a harmonic frequency value at the predefined point in the electrical grid; determining a deviation between the harmonic frequency signal and a permissible harmonic frequency value; determining a permissible modulation index based on the deviation; comparing the permissible modulation index to the modulation index requested by the power converter controller; and, altering a DC link voltage set-point based on the comparison between the permissible modulation index and the requested modulation index.

公开(公告)号：US12044214B2

公开(公告)日：2024-07-23

申请号：US18257965

申请日：2021-12-14

申请人： VESTAS WIND SYSTEMS A/S

发明人： Per Hagen Nielsen ,  Torsten Lund

IPC分类号： H02J3/18 ,  F03D7/02 ,  F03D7/04 ,  H02J3/50

CPC分类号： F03D7/0284 ,  F03D7/048 ,  H02J3/50 ,  F05B2270/337 ,  H02J2300/28

摘要： A method for controlling one or more renewable power generators forming a renewable power plant, and a controller configured to perform the method. In one aspect, plant voltage control is carried out on the basis of a more accurate voltage-reactive power relationship value which is determined dynamically based on grid conditions rather than the conventional approach of the voltage-reactive power relationship being a static value that is based on information provided by a transmission system operator during installation or commissioning of the power plant.

公开(公告)号：US11728741B2

公开(公告)日：2023-08-15

申请号：US17278161

申请日：2019-09-19

申请人： VESTAS WIND SYSTEMS A/S

发明人： Ciprian Biris ,  Kent Tange ,  Duy Duc Doan ,  Gert Karmisholt Andersen ,  Torsten Lund ,  Lars Meyer

IPC分类号： H02M5/42 ,  H02P9/02 ,  H02M1/44 ,  F03D9/25

CPC分类号： H02M5/42 ,  F03D9/25 ,  H02M1/44 ,  H02P9/02 ,  F05B2220/706

摘要： This invention concerns a method of controlling a power converter system 26 operating in an overmodulation region. The power converter system 26 comprises more than two current controllers 71, 73, 77, 79 a modulator 76 and a power converter 78, and the modulator 76 is configured to provide at least one modulated drive signal 87 to the power converter 78 based on voltage reference vector signals 82a, 82b, 82c, 82d from the more than two current controllers 71, 73, 77, 79. The method comprises determining the voltage reference vector signals 82a, 82b, 82c, 82d; determining compensated voltage reference vector signals 84a, 84b, 84c, 84d indicative of a fundamental frequency of a respective voltage reference vector signal 82a, 82b, 82c, 82d; and, determining the at least one modulated drive signal 87 based on a combination of the compensated voltage reference vector signals 84a, 84b, 84c, 84d.

公开(公告)号：US11611290B2

公开(公告)日：2023-03-21

申请号：US16957085

申请日：2018-12-06

申请人： VESTAS WIND SYSTEMS A/S

发明人： Ciprian Biris ,  Kent Tange ,  Duy Duc Doan ,  Torsten Lund ,  Gert Karmisholt Andersen

IPC分类号： H02M7/5395 ,  H02M5/458 ,  H02P27/08

摘要： The invention relates to a method for operating a wind turbine which comprises a power generator, a generator side converter, a grid side converter, a DC link electrically connected to an output of the generator side converter and an input of the grid side converter. The method comprises monitoring a wind turbine signal for detection of an operational condition which requires an increase of an output voltage of the grid side converter, upon detection of the operational condition, initiate an over-modulation mode wherein the grid side converter is operated with a modulation index in an over-modulation range, and upon the detection of the operational condition, initiate a DC-voltage adjustment mode wherein the a DC-voltage of the DC link is increased from a first voltage level towards a second voltage level.

公开(公告)号：US11502616B2

公开(公告)日：2022-11-15

申请号：US17278197

申请日：2019-09-11

申请人： VESTAS WIND SYSTEMS A/S

发明人： Ciprian Biris ,  Kent Tange ,  Gert Karmisholt Andersen ,  Duy Duc Doan ,  Torsten Lund ,  Lars Meyer

IPC分类号： H02M5/458 ,  H02P9/02

摘要： This invention concerns a method of controlling a line side converter of a power converter system operating in an over-modulation range. The line side converter comprises a controller comprising a feedback control module configured to output a feedback control signal for modifying a drive signal received by a modulator. The method comprises determining a modulation index within the over-modulation range; and, controlling the feedback control module to adjust the feedback control signal based on the modulation index.

公开(公告)号：US11454215B2

公开(公告)日：2022-09-27

申请号：US16754854

申请日：2018-10-02

申请人： VESTAS WIND SYSTEMS A/S

发明人： Mu Wei ,  Kouroush Nayebi ,  Torsten Lund

IPC分类号： F03D7/04 ,  F03D9/25 ,  F03D7/02

摘要： The present invention relates to a method for releasing a requested amount of power from a power facility to an associated power grid, the method comprising the steps of providing a release signal as to when the requested amount of power is to be released from the power facility to the associated power grid, ramping up the power generation of the power facility, and releasing the requested amount of power to the associated power grid in accordance with the release signal, wherein at least part of an excess power generated during ramping up is dissipated and/or stored in suitable power handling modules. The present invention also relates to a power facility controller being capable for performing this method.

公开(公告)号：US20220220938A1

公开(公告)日：2022-07-14

申请号：US17574392

申请日：2022-01-12

申请人： VESTAS WIND SYSTEMS A/S

发明人： Kouroush NAYEBI ,  Torsten Lund ,  Frank Ormel ,  Mogens Bjerning

IPC分类号： F03D7/02 ,  F03D7/04 ,  F03D9/00 ,  H02J3/38 ,  G05B19/042

摘要： A method for controlling a renewable energy farm comprising a plurality of wind turbines and at least one central control unit is disclosed. The wind turbines of the renewable energy farm are connected to a power grid. The central control unit receives a request for change in operation of at least one of the wind turbines, where execution of the change in operation causes a change in power output of the wind turbine. The central control unit checks whether or not the change in power output is in conflict with at least one obligation of the renewable energy farm towards the power grid. In the case that the change in power output is in conflict with at least one obligation of the renewable energy farm towards the power grid, execution of the change in operation is deferred.