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    A METHOD OF OPERATING A POWER GENERATION SYSTEM
    1.
    发明申请
    A METHOD OF OPERATING A POWER GENERATION SYSTEM 审中-公开

    公开(公告)号：WO2020057707A2

    公开(公告)日：2020-03-26

    申请号：PCT/DK2019/050274

    申请日：2019-09-19

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： BIRIS, Ciprian ,  TANGE, Kent ,  DOAN, Duy Duc ,  ANDERSEN, Gert Karmisholt ,  LUND, Torsten ,  MEYER, Lars

    Abstract: 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.

    WIND TURBINE WITH REDUCED DC-VOLTAGE RESERVE
    2.
    发明申请
    WIND TURBINE WITH REDUCED DC-VOLTAGE RESERVE 审中-公开

    公开(公告)号：WO2019120406A1

    公开(公告)日：2019-06-27

    申请号：PCT/DK2018/050329

    申请日：2018-12-06

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： BIRIS, Ciprian ,  TANGE, Kent ,  DOAN, Duy Duc ,  LUND, Torsten ,  ANDERSEN, Gert Karmisholt

    IPC: H02M7/5395 ,  H02M5/458 ,  H02P27/08 ,  F03D7/02 ,  H02J3/38 ,  H02P9/10 ,  G01R31/02

    Abstract: 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.

    CONTROLLED INRUSH CURRENT FOR CONVERTER-CONNECTED GRID FILTER
    3.
    发明申请
    CONTROLLED INRUSH CURRENT FOR CONVERTER-CONNECTED GRID FILTER 审中-公开
    用于转换器连接网状滤波器的受控冲击电流

    公开(公告)号：WO2016206688A1

    公开(公告)日：2016-12-29

    申请号：PCT/DK2016/050170

    申请日：2016-06-08

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： ABEYASEKERA, Tusitha ,  DOAN, Duy Duc ,  ANDERSEN, Gert Karmisholt ,  HELLE, Lars ,  PEDERSEN, Tune ,  NIELSEN, John Godsk ,  ANDERSEN, Søren

    IPC: H02J3/38 ,  F03D9/00 ,  H02J3/42 ,  H02H9/00

    CPC classification number: F03D7/0284 ,  F03D9/255 ,  H02H7/085 ,  H02H7/26 ,  H02H9/001 ,  H02J3/386 ,  H02J3/42 ,  Y02E10/72 ,  Y02E10/763

    Abstract: A method, converter arrangement, and controller are disclosed for connecting an output of a converter with an electrical grid to control inrush currents into a grid filter assembly connected with the output of the converter, the electrical grid carrying an alternating current (AC) signal having one or more phases. The method includes determining a voltage of the AC signal and operating, after pre-charging a direct current (DC) link of the converter to a predetermined voltage, the converter using open-loop voltage control to produce an AC output signal that substantially matches the AC signal of the electrical grid. The open-loop voltage control is based on the determined voltage of the AC signal. The method further includes closing, after a predetermined amount of time of operating the converter using the open-loop voltage control, a switching device to thereby connect the output of the converter with the electrical grid.

    Abstract translation: 公开了一种用于将转换器的输出与电网连接的方法，转换器布置和控制器，以控制与转换器的输出连接的电网滤波器组件的浪涌电流，电网承载交流（AC）信号，其具有 一个或多个阶段。 该方法包括确定AC信号的电压，并且在将转换器的直流（DC）链路预充电到预定电压之后，使用开环电压控制来操作，以产生基本匹配的转换器的AC输出信号 电网的交流信号。 开环电压控制基于所确定的AC信号电压。 该方法还包括在使用开环电压控制操作转换器的预定量的时间之后关闭开关装置，从而将转换器的输出与电网连接。

    WIND TURBINE WITH VIRTUAL SYNCHRONOUS GENERATOR WITH DAMPING CONTROL
    4.
    发明申请
    WIND TURBINE WITH VIRTUAL SYNCHRONOUS GENERATOR WITH DAMPING CONTROL 审中-公开

    公开(公告)号：WO2021129914A1

    公开(公告)日：2021-07-01

    申请号：PCT/DK2020/050396

    申请日：2020-12-18

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： EBRAHIMZADEHVESHAREH, Esmaeil ,  FABER, Mark ,  CHRISTENSEN, Poul Brandt ,  ANDERSEN, Gert Karmisholt ,  LUND, Torsten

    IPC: H02P23/04

    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.

    METHOD FOR HANDLING AN OVER VOLTAGE RIDE THROUGH EVENT
    7.
    发明申请
    METHOD FOR HANDLING AN OVER VOLTAGE RIDE THROUGH EVENT 审中-公开
    通过事件处理过电压的方法

    公开(公告)号：WO2016155739A1

    公开(公告)日：2016-10-06

    申请号：PCT/DK2016/050065

    申请日：2016-03-08

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： ANDERSEN, Gert Karmisholt ,  CHRISTENSEN, Leif Svinth ,  BIRIS, Ciprian ,  MERRILD, Uffe C.

    IPC: H02P9/04 ,  H02P9/10

    CPC classification number: H02P9/102 ,  H02P9/007 ,  H02P9/04 ,  H02P9/10

    Abstract: The present invention relates to a method for operating a doubly fed induction generator wind power facility during an OVRT event, said the wind turbine facility being adapted to inject active and/or reactive current into an associated grid, the method comprising the steps of determining the occurrence of an over voltage grid event, and maintaining a grid-side inverter of the doubly fed induction generator wind power facility fully operable during the over voltage ride though event so as to maintain a controllable active and/or reactive current capability during the over voltage grid event,

    Abstract translation: 本发明涉及一种用于在OVRT事件期间操作双馈感应发电机风力发电设备的方法，所述风力涡轮机设施适于将有源和/或无功电流注入到相关联的电网中，所述方法包括以下步骤： 发生过电压电网事件，并且保持双馈感应发电机风力发电设备的电网侧逆变器在过电压乘车事件期间完全可操作，以便在过电压期间保持可控的有功和/或无功电流能力 网格事件，

    A METHOD OF OPERATING A POWER GENERATION SYSTEM
    8.
    发明申请
    A METHOD OF OPERATING A POWER GENERATION SYSTEM 审中-公开

    公开(公告)号：WO2020057707A3

    公开(公告)日：2020-03-26

    申请号：PCT/DK2019/050274

    申请日：2019-09-19

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： BIRIS, Ciprian ,  TANGE, Kent ,  DOAN, Duy Duc ,  ANDERSEN, Gert Karmisholt ,  LUND, Torsten ,  MEYER, Lars

    IPC: H02M5/458 ,  H02M7/5387

    Abstract: 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.

    METHOD OF CONTROLLING A WIND TURBINE GENERATOR
    10.
    发明申请
    METHOD OF CONTROLLING A WIND TURBINE GENERATOR 审中-公开

    公开(公告)号：WO2019120404A1

    公开(公告)日：2019-06-27

    申请号：PCT/DK2018/050327

    申请日：2018-12-05

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： ANDERSEN, Gert Karmisholt ,  HELLE, Lars ,  DYRLUND, Poul Møhl ,  RABI, Morteza ,  DOAN, Duy Duc

    IPC: H02J3/38 ,  F03D7/02 ,  F03D7/04

    Abstract: A method for use in controlling a wind turbine generator (1) of a wind power plant based on a condition of a power converter or a component forming part of a power converter in the wind power plant. The method comprises determining the initial condition of the power converter or a component forming part of a power converter and determining the evolution of the condition from the initial condition based on notional power reference values of the wind turbine generator (1). The method further comprises comparing the evolution of the condition to a predetermined threshold and determining, from the comparison, a time period by which the condition of the power converter or a component forming part of a power converter will substantially equal the predetermined threshold.

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