中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

13 records (took 0.032 seconds)

    CONVERTERS FOR WIND TURBINE GENERATORS
    1.
    发明申请
    CONVERTERS FOR WIND TURBINE GENERATORS 审中-公开
    风力发电机转换器

    公开(公告)号：WO2015055211A1

    公开(公告)日：2015-04-23

    申请号：PCT/DK2014/050331

    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 connection to the mains grid. To reduce the effect of common-mode noise, a capacitor is connected between the 1 neutral conductor7 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为两对整流器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。每对整流器的输出连接在一起，两对的输出串联连接，以产生高压直流。 输出。 逆变器10a，10b，10c，10d然后转换直流。 权力到a.c. 以适合连接到电网的固定频率和电压。 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连接在每个交流电场之间。 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，并补偿正，负导体中的电流之间的任何不平衡。 在连接交流电的导体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。

    APPARATUS AND METHOD FOR CONTROLLING REACTIVE POWER FROM CLUSTERS OF WIND TURBINES CONNECTED TO A UTILITY GRID
    4.
    发明申请
    APPARATUS AND METHOD FOR CONTROLLING REACTIVE POWER FROM CLUSTERS OF WIND TURBINES CONNECTED TO A UTILITY GRID 审中-公开
    用于控制连接到实际网格的风力涡轮机组的反作用力的装置和方法

    公开(公告)号：WO2009083446A2

    公开(公告)日：2009-07-09

    申请号：PCT/EP2008/067695

    申请日：2008-12-17

    Applicant: VESTAS WIND SYSTEMS A/S ,  JØRGENSEN, Allan Holm ,  HELLE, Lars ,  SCHAIER, Leonard

    Inventor： JØRGENSEN, Allan Holm ,  HELLE, Lars ,  SCHAIER, Leonard

    CPC classification number: F03D7/048 ,  F03D7/0284 ,  H02J3/1885 ,  H02J3/386 ,  Y02E10/723 ,  Y02E10/763 ,  Y02E40/32

    Abstract: The present invention relates to a method for operating a wind farm comprising a plurality of wind turbine generators having substantially the same real output power ratings supplying power to a grid. The method comprises the steps of selecting at least one turbine in a first group of wind turbines to support reactive power needs of the farm or grid by supplying or absorbing reactive power when needed; selecting at least one turbine in a second group of wind turbines to support reactive power needs of the farm or grid by absorbing reactive power when needed; and commanding at least one wind turbine in the first or second group to support reactive power needs of the farm or grid.

    Abstract translation: 本发明涉及一种用于操作风力发电场的方法，该风力发电场包括多个风力发电机，其具有与电网相同的实际输出额定功率。 该方法包括以下步骤：在第一组风力涡轮机中选择至少一个涡轮机以通过在需要时供应或吸收无功功率来支持农场或电网的无功功率需求; 在第二组风力涡轮机中选择至少一个涡轮机以通过在需要时吸收无功功率来支持农场或电网的无功功率需求; 并指挥第一组或第二组中的至少一个风力涡轮机，以支持农场或电网的无功功率需求。

    CONVERTERS FOR WIND TURBINE GENERATORS
    10.
    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。

Patent Agency Ranking