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    WIND-TURBINE CONVERTER CONTROL FOR MODULAR STRING CONVERTERS
    1.
    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 WIND TURBINE NACELLE COMPRISING A HEAT EXCHANGER ASSEMBLY
    3.
    发明公开
    A WIND TURBINE NACELLE COMPRISING A HEAT EXCHANGER ASSEMBLY 有权
    备有敞车器装置风力涡轮机

    公开(公告)号：EP2507512A1

    公开(公告)日：2012-10-10

    申请号：EP10784806.1

    申请日：2010-12-01

    Applicant: Vestas Wind Systems A/S

    Inventor： WONG, Voon Hon ,  KANDASAMY, Ravi ,  NARASIMALU, Srikanth ,  LARSEN, Gerner ,  ABEYASEKERA, Tusitha ,  KNUDSEN, Peter, C.

    IPC: F03D11/00

    CPC classification number: F03D11/00 ,  F03D9/25 ,  F03D15/20 ,  F03D80/60 ,  F05B2260/20 ,  Y02E10/722 ,  Y02E10/726

    Abstract: A heat exchanger assembly for cooling a heat-generating component, such as a generator or power electronics module, within a wind turbine nacelle comprises a thermoelectric element, such as a Peltier element, having a first section arranged in a first region of relatively high temperature in contact with the heat-generating component or in the vicinity thereof, and a second section arranged in a second region of a relatively low temperature. The thermoelectric element is configured to transfer heat from the first region of relatively high temperature to the second region of relatively low temperature with consumption of electrical energy. A source of electrical energy is provided for the thermoelectric element, and a control unit may be provided for controlling the energy supply in order to control the temperature of the component or surface area cooled by the thermoelectric element. A further cooling element including a so-called heat pipe may be provided to enhance cooling efficiency.

    CONTROLLED INRUSH CURRENT FOR CONVERTER-CONNECTED GRID FILTER
    5.
    发明公开
    CONTROLLED INRUSH CURRENT FOR CONVERTER-CONNECTED GRID FILTER 审中-公开
    控制转换器连接网格滤波器的浪涌电流

    公开(公告)号：EP3314715A1

    公开(公告)日：2018-05-02

    申请号：EP16728612.9

    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

    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.

    CONVERTERS FOR WIND TURBINE GENERATORS
    9.
    发明公开
    CONVERTERS FOR WIND TURBINE GENERATORS 审中-公开
    UMSETZERFÜRWINDTBINENGENERATOREN

    公开(公告)号：EP3058636A1

    公开(公告)日：2016-08-24

    申请号：EP14786792.3

    申请日：2014-10-14

    Applicant: Vestas Wind Systems A/S

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

    IPC: H02J3/28 ,  F03D9/00 ,  G01R19/165 ,  H02K19/34 ,  H02K21/48 ,  H02M1/12 ,  H02H7/12 ,  H02H7/26 ,  H02J3/38 ,  H02M7/49

    CPC classification number: H02M5/42 ,  F03D9/255 ,  G01R31/40 ,  H02H3/105 ,  H02H7/122 ,  H02J3/28 ,  H02J3/386 ,  H02M1/12 ,  H02M1/32 ,  H02M5/4585 ,  H02M7/219 ,  H02M7/23 ,  H02M7/493 ,  H02M2001/0077 ,  H02M2001/123 ,  H02M2007/4822 ,  H03H7/0107 ,  Y02E10/725 ,  Y02E10/726 ,  Y02E10/763 ,  Y02E10/766 ,  Y02E70/30

    Abstract: A wind turbine generator 1 supplies three-phase a.c. current of variable voltage and variable frequency to two pairs of rectifiers 4a, 4b and 4c, 4d which generate respective d.c. outputs connected to positive, negative and neutral d.c. conductors 6, 7, 8. The outputs from each pair of rectifiers are connected together, and the outputs from the two pairs are connected in series to create a high-voltage d.c. output. Inverters 10a, 10b, 10c, 10d then convert the d.c. power to a.c. at a fixed frequency and voltage suitable for In connection to the mains grid. To reduce the effect of common-mode noise, a capacitor is connected between the 1 neutral conductor 7 and earth, and a respective filter circuit 30 is connected between each of the a.c. outputs of the inverters 10a, 10b, 10c, 10d and earth. To reduce the effect of voltage surges during lightning, a surge protection device is also connected between the neutral d.c. conductor 7 and earth. Any imbalance in the current in the positive and negative conductors 6, 8 is compensated by detecting the presence of current flowing in the neutral conductor 7. Power supplied to auxiliary circuits from the output of one of the inverters, e.g. 10a, of the wind turbine is measured, and any resulting imbalance between the current in the positive and negative conductors is compensated. In the event of an earth-leakage fault in the conductors connecting the a.c. outputs of the inverters to the grid, when isolated, isolation detection relays 25 are provided.

    Abstract translation: 风力发电机1提供三相交流电。 可变电压和可变频率的电流到两对整流器4a，4b和4c，4d，它们产生相应的直流 输出连接到正，负和中性直流。 导体6,7,8。每对整流器的输出端连接在一起，两对输出端串联连接，产生高压直流。 输出。 逆变器10a，10b，10c，10d然后转换直流 权力到a.c. 在固定的频率和电压适用于连接到电网。 为了降低共模噪声的影响，电容器连接在1个中性导体7和地之间，并且相应的滤波器电路30连接在每个直流电平之间。 逆变器10a，10b，10c，10d和地的输出。 为了减少雷击期间电压浪涌的影响，浪涌保护装置也连接在中性点间。 导体7和地球。 通过检测在中性导体7中流动的电流的存在来补偿正和负导体6,8中的电流的任何不平衡。从一个逆变器的输出，例如， 测量风力涡轮机的10a，并补偿在正和负导体之间的电流之间的所有不平衡。 在连接交流电的导线中发生漏电故障的情况。 当隔离的隔离检测继电器25被提供时，逆变器的输出到电网。

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