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    WIND TURBINE CONVERTER CONTROL
    31.
    发明公开
    WIND TURBINE CONVERTER CONTROL 审中-公开
    风力发电机组控制

    公开(公告)号：EP3284169A1

    公开(公告)日：2018-02-21

    申请号：EP16716463.1

    申请日：2016-04-11

    Applicant: Vestas Wind Systems A/S

    Inventor： NIELSEN, John Godsk ,  ANDERSEN, Søren ,  HELLE, Lars ,  DOAN, Duy Duc

    IPC: H02P27/00 ,  H02P29/02 ,  H02M7/493

    Abstract: A method of controlling a full-scale converter system in which both the grid-side inverter unit and the generator-side inverter unit have a series-connection of parallel inverters and form a generator-side and grid-side voltage-center-point at a voltage level between the inverters connected in series. The voltage-center-points are electrically connected by a center-line conductor. Conversion operation with a de-rated maximum active power-output is performed in response to at least one of (i) the grid-side inverter and (ii) the generator-side inverter of the first converter-string being disabled, by disabling active power production of at least one of (i) the grid-side inverter and (ii) the generator-side inverter of the second converter-string, or correspondingly reducing active power production of the second converter-string, thereby preventing a compensation current along the center-line conductor.

    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE
    33.
    发明授权
    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE 有权
    方法操作风力涡轮机及适宜系统及其

    公开(公告)号：EP2649306B1

    公开(公告)日：2016-03-23

    申请号：EP11799348.5

    申请日：2011-12-07

    Applicant: Vestas Wind Systems A/S

    Inventor： GUPTA, Amit Kumar ,  TRIPATHI, Anshuman ,  STYHM, Ove ,  HELLE, Lars ,  KARUPPANAN, Yugarajan ,  OPINA, Gil Jr Lampong

    IPC: F03D9/00 ,  H02J3/38

    CPC classification number: F03D7/0264 ,  F03D9/255 ,  H02J3/386 ,  Y02E10/72 ,  Y02E10/763

    Abstract: A method of operating a wind turbine is disclosed, the wind turbine comprising a power generator, a machine-side converter connected to the power generator, a line-side converter connected to a power grid through associated power components, and a DC-link connected between the machine-side converter and the line-side converter. The method includes monitoring the power grid for overvoltage events, and upon detecting an overvoltage event: (1) disabling active operation of the machine-side converter and the line-side converter, (2) enabling an AC load dump connected between the machine side converter and the power generator in order to dissipate power output from the power generator, (3) waiting for a waiting period, and (4) enabling active operation of the line-side converter and the machine converter when the overvoltage event ends within the waiting period.

    A METHOD OF CONTROLLING A WIND TURBINE GENERATOR AND APPARATUS FOR CONTROLLING ELECTRIC POWER GENERATED BY A WIND TURBINE GENERATOR
    34.
    发明公开
    A METHOD OF CONTROLLING A WIND TURBINE GENERATOR AND APPARATUS FOR CONTROLLING ELECTRIC POWER GENERATED BY A WIND TURBINE GENERATOR 有权
    用于控制控制风力涡轮发电机的电功率的风力涡轮发电机和设备方法产生

    公开(公告)号：EP2478609A1

    公开(公告)日：2012-07-25

    申请号：EP10766364.3

    申请日：2010-09-14

    Applicant: Vestas Wind Systems A/S

    Inventor： CAO, Shu Yu ,  TRIPATHI, Anshuman ,  LARSEN, Kim B. ,  ANDERSEN, Gert Karmisholt ,  HELLE, Lars

    IPC: H02J3/38 ,  H02P9/00

    CPC classification number: F03D7/0272 ,  H02J3/386 ,  H02P9/48 ,  H02P21/141 ,  H02P2101/15 ,  Y02E10/763

    Abstract: A method of controlling a wind turbine generator is provided, the wind turbine generator converting mechanical energy to electrical. The method comprises: determining an electromagnetic power reference representing the electromagnetic power generated by the wind turbine generator, wherein the electromagnetic power reference is determined based on a desired output of the wind turbine generator; controlling the electrical power generated by the wind turbine generator using a control signal, wherein the control signal is derived from the electromagnetic power reference and is modified in dependence on an inverse power function of the wind turbine generator by incorporating minimal copper loss constraint and stator voltage limiting constraint such that non-linearity of the wind turbine generator plant is compensated in the control loop and it operates at its maximum efficiency. One effect of the method is that classical linear control loop design can be employed in spite of the plant being a non-linear identity.

    RECONFIGURABLE POWER CONVERTER MODULE
    35.
    发明公开
    RECONFIGURABLE POWER CONVERTER MODULE 审中-公开
    可重新配置的逆变器模块

    公开(公告)号：EP2386137A1

    公开(公告)日：2011-11-16

    申请号：EP10701829.3

    申请日：2010-01-12

    Applicant: Vestas Wind Systems A/S

    Inventor： KJÆR, Philip Carne ,  HELLE, Lars

    IPC: H02M1/12 ,  H02M5/458 ,  H02J3/38

    CPC classification number: H02M1/12 ,  H02J3/386 ,  Y02E10/763

    Abstract: Embodiments provide a reconfigurable power converter module for a wind turbine facility adapted to supply electric power to an associated power supply grid. The reconfigurable power converter module includes a frequency converter operatively connected to filter means, wherein the frequency converter and the filter means are mutually reconfigurable so as to suppress internal and/or external resonances or harmonics.

    DC CHOPPER FOR MMC CELL WITH INTEGRATED CHOPPER RESISTOR
    37.
    发明公开
    DC CHOPPER FOR MMC CELL WITH INTEGRATED CHOPPER RESISTOR 审中-公开

    公开(公告)号：EP3780366A1

    公开(公告)日：2021-02-17

    申请号：EP20190429.9

    申请日：2020-08-11

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： BIRIS, Ciprian ,  GERÇEK, Cem Özgür ,  HELLE, Lars ,  DOAN, Duy Duc ,  PEDERSEN, Tune

    IPC: H02M1/32

    Abstract: This disclosure proposes a topology that integrates a DC chopper into the Modular Multilevel Converter (MMC) cells of a power converter. The integrated DC chopper may include chopper resistors that may also be advantageously integrated into a heat sink for a power module comprising at least the power transistors of the MMC cell. Embodiments herein also describe a method for using an MMC cell's IGBTs and chopper resistors for providing a safe discharge of both cell capacitors and DC-link capacitors in different operating conditions.

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