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    CONTROLLED INRUSH CURRENT FOR CONVERTER-CONNECTED GRID FILTER
    12.
    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
    16.
    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。

    LIQUID-COOLED ELECTRICAL APPARATUS
    19.
    发明公开
    LIQUID-COOLED ELECTRICAL APPARATUS 审中-公开
    FLÜSSIGKEITSGEKÜHLTEELEKTRISCHE VORRICHTUNG

    公开(公告)号：EP3123487A1

    公开(公告)日：2017-02-01

    申请号：EP15713839.7

    申请日：2015-03-19

    Applicant: Vestas Wind Systems A/S

    Inventor： ABEYASEKERA, Tusitha

    IPC: H01F27/10

    CPC classification number: F03D80/60 ,  F03D9/25 ,  H01F27/10 ,  H02K9/193

    Abstract: An inductor 1 for connecting a wind turbine generator to the electricity grid is mounted within a housing 2, and the coils of the inductor 1 are cooled by means of cooling plates 3 located within the coils, and in which are formed tubular conduits. Coolant liquid is supplied to the conduits through supply pipes 7 which are connected to the conduits by means of connectors 8 mounted underneath the housing 2 , such that any coolant liquid which escapes from the connectors 8 falls under gravity into a drip tray 10 arranged below the housing 2. Corresponding connectors are provided underneath the housing for connecting the conduits to outflow pipes. A sensor 11 within the drip tray 10 detects the presence of any coolant liquid which has leaked from the connectors 8 and, in response, generates an alarm signal which is transmitted to control circuitry for disconnecting the inductor 1 and shutting down the wind turbine generator.

    Abstract translation: 用于将风力涡轮发电机连接到电网的电感器1安装在壳体2内，并且电感器1的线圈通过位于线圈内的冷却板3冷却，并且其中形成有管状导管。 冷却剂液体通过供给管7供应到管道，供应管7通过安装在壳体2下方的连接器8连接到管道，使得从连接器8逸出的任何冷却剂液体都重力地落入布置在下面 相应的连接器设置在外壳下面，用于将导管连接到流出管。 滴水盘10内的传感器11检测到从连接器8泄漏的任何冷却剂液体的存在，并且作为响应产生报警信号，该报警信号被传送到控制电路以断开电感器1并关闭风力涡轮发电机。

    A WIND TURBINE NACELLE COMPRISING A HEAT EXCHANGER ASSEMBLY
    20.
    发明授权
    A WIND TURBINE NACELLE COMPRISING A HEAT EXCHANGER ASSEMBLY 有权
    WINDTBINENGONDEL MITWÄRMETAUSCHERANORDNUNG

    公开(公告)号：EP2507512B1

    公开(公告)日：2016-06-01

    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: F03D80/00

    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.

    Abstract translation: 用于在风力涡轮机机舱内冷却诸如发电机或电力电子模块的发热部件的热交换器组件包括热电元件，例如珀尔帖元件，其具有布置在相对高温度的第一区域中的第一部分 与发热部件或其附近接触的第二部分和布置在相对低温度的第二区域中的第二部分。 热电元件被配置为将热量从较高温度的第一区域传递到具有电能消耗的较低温度的第二区域。 为热电元件提供电能源，并且可以设置控制单元以控制能量供应，以便控制由热电元件冷却的部件或表面积的温度。 可以提供包括所谓的热管的另外的冷却元件以提高冷却效率。

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