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    WIND-TURBINE CONVERTER CONTROL FOR MODULAR STRING CONVERTERS
    44.
    发明公开
    WIND-TURBINE CONVERTER CONTROL FOR MODULAR STRING CONVERTERS 审中-公开
    模块化转换器的风力涡轮机转换器控制

    公开(公告)号：EP3213383A1

    公开(公告)日：2017-09-06

    申请号：EP15787448.8

    申请日：2015-10-19

    Applicant: Vestas Wind Systems A/S

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

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

    CPC classification number: H02J3/386 ,  F03D7/042 ,  F03D9/255 ,  H02M2001/0003 ,  H02P2101/15 ,  Y02E10/723 ,  Y02E10/763

    Abstract: A wind turbine converter system with a rectifier and an inverter and a converter controller has at least first and second converter strings. The converter system is controlled by a master-converter controller and a slave-converter controller. The master-converter controller controls the first converter string and the slave-converter controller controls the second converter string. The master-converter controller receives commands from a superordinate wind turbine controller, provides the slave-converter controller with string-control commands on the basis of the superordinate control commands, and controls the conversion operation of the first converter string on the basis of the superordinate control command. The slave-converter controller receives the string-control commands from the master-converter controller and controls the conversion operation of the second converter string on the basis of the string-control commands received. The first and the second converter strings can be arranged in a bipolar configuration giving access to a neutral point. Fault detection can be performed based on current through the neutral. The system is capable of fault ride-through. Also, in case of failure of the master-converter controller, a redundant unit takes its place.

    Abstract translation: 具有整流器（4）和逆变器（5）以及转换器控制器（11）的风力涡轮机转换器系统（3）具有至少第一和第二转换器串（24,25）。 变流器系统由主变流器控制器（13）和从变流器控制器（12）控制。 主变换器控制器（13）控制第一变换器串（25），并且从变换器控制器（12）控制第二变换器串（24）。 主变流器控制器（13）接收来自上级风力涡轮机控制器（21）的命令，基于上级控制命令向从变流器控制器（12）提供串控制命令，并且控制 第一转换器串（25）基于上级控制命令。 从变换器控制器（12）接收来自主变换器控制器（13）的串控制命令，并基于接收到的串控制命令来控制第二变换器串的变换操作。 第一和第二转换器串（24,25）可以布置成能够进入中性点（62）的双极配置。 故障检测可以基于通过中性线（62）的电流进行。 该系统能够进行故障穿越。 而且，在主变换器控制器（13）发生故障的情况下，冗余单元取代它。

    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE
    46.
    发明公开
    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE 有权
    VERFAHRENFÜRDEN BETRIEB EINER WINDTURBINE SOWIE GEEIGNETES系统DAFÜR

    公开(公告)号：EP2649306A2

    公开(公告)日：2013-10-16

    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: F03D1/00 ,  H02M5/458 ,  H02M7/06 ,  H02M1/32

    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.

    Abstract translation: 公开了一种操作风力涡轮机的方法，所述风力涡轮机包括发电机，连接到发电机的机器侧转换器，通过相关联的功率部件连接到电网的线路侧转换器，以及连接到 在机侧转换器和线路侧转换器之间。 该方法包括监控过电压事件的电网，检测到过电压事件时：（1）禁用机侧转换器和线路侧转换器的主动运行，（2）启用连接在机侧的交流负载转储 转换器和发电机，以消耗发电机的功率输出，（3）等待等待时间;（4）当过电压事件在等待期间结束时，使线路侧转换器和机器转换器有效运行 期。

    METHOD OF OPERATING A WIND TURBINE, WIND TURBINE, WIND TURBINE CONTROLLING SYSTEM, AND PROCESSING SYSTEM
    49.
    发明公开
    METHOD OF OPERATING A WIND TURBINE, WIND TURBINE, WIND TURBINE CONTROLLING SYSTEM, AND PROCESSING SYSTEM 有权
    欧洲风力发电机组的最佳选择FUNR SPANNUNGSSPITZEN-DURCHLÄUFE

    公开(公告)号：EP2553788A2

    公开(公告)日：2013-02-06

    申请号：EP11713172.2

    申请日：2011-03-23

    Applicant: Vestas Wind Systems A/S

    Inventor： LI, Bing ,  TRIPATHI, Anshuman ,  CAO, Shu, Yu ,  GUPTA, Amit, Kumar ,  SNG, Eng, Kian, Kenneth ,  HELLE, Lars

    IPC: H02J3/38 ,  F03D9/00

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

    Abstract: According to an embodiment, a method of operating a wind turbine comprising a DC-to-AC voltage converter is provided, the wind turbine being connectable to a grid via the DC-to-AC voltage converter, the method comprising: determining a line voltage of a power line connecting the DC-to-AC voltage converter to the grid; if the determined line voltage exceeds a predefined voltage threshold value, injecting reactive current into the power line, wherein the amount of reactive current injected is chosen such that an output voltage of the DC-to-AC voltage converter is kept within a predetermined voltage range.

    Abstract translation: 根据实施例，提供了一种操作包括DC-AC电压转换器的风力涡轮机的方法，所述风力涡轮机可经由所述DC-AC电压转换器连接到电网，所述方法包括：确定线路电压 将DC-AC电压转换器连接到电网的电力线; 如果所确定的线电压超过预定的电压阈值，则将无功电流注入电力线，其中，选择注入的无功电流量，使得DC-AC电压转换器的输出电压保持在预定电压范围内 。

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