Methods and systems for wind turbine generators
    1.
    发明授权
    Methods and systems for wind turbine generators 有权
    风力发电机的方法和系统

    公开(公告)号:US07884492B2

    公开(公告)日:2011-02-08

    申请号:US11939055

    申请日:2007-11-13

    IPC分类号: F03D9/00 H02P9/00

    摘要: Methods and systems for reducing heat loss in a generator system are provided. The generator system includes an electrical generator and a power converter. The method includes generating electricity in the generator at a first power factor and converting electricity in the converter at a second power factor in a first mode of operation and generating electricity in the generator at a third power factor wherein the third power factor is greater than the first power factor and converting electricity in the converter at a fourth power factor wherein the fourth power factor is less than the second power factor in a second mode of operation such that the power output of the generator system in the second mode of operation is substantially equal to the power output of the generator system in the first mode of operation and the generator currents are facilitated being reduced.

    摘要翻译: 提供了用于减少发电机系统中的热损失的方法和系统。 发电机系统包括发电机和电力转换器。 该方法包括在第一功率因数下在发电机中发电,并在第一工作模式下以第二功率因数转换转换器中的电,并以第三功率因数发电,其中第三功率因数大于 第一功率因数并且以第四功率因数转换转换器中的电力,其中在第二操作模式中第四功率因数小于第二功率因数,使得在第二操作模式中的发电机系统的功率输出基本相等 在第一操作模式下发电机系统的功率输出,并且减少发电机电流。

    METHODS AND SYSTEMS FOR WIND TURBINE GENERATORS
    2.
    发明申请
    METHODS AND SYSTEMS FOR WIND TURBINE GENERATORS 有权
    风力发电机的方法和系统

    公开(公告)号:US20090121483A1

    公开(公告)日:2009-05-14

    申请号:US11939055

    申请日:2007-11-13

    IPC分类号: H02P9/00

    摘要: Methods and systems for reducing heat loss in a generator system are provided. The generator system includes an electrical generator and a power converter. The method includes generating electricity in the generator at a first power factor and converting electricity in the converter at a second power factor in a first mode of operation and generating electricity in the generator at a third power factor wherein the third power factor is greater than the first power factor and converting electricity in the converter at a fourth power factor wherein the fourth power factor is less than the second power factor in a second mode of operation such that the power output of the generator system in the second mode of operation is substantially equal to the power output of the generator system in the first mode of operation and the generator currents are facilitated being reduced.

    摘要翻译: 提供了用于减少发电机系统中的热损失的方法和系统。 发电机系统包括发电机和电力转换器。 该方法包括在第一功率因数下在发电机中发电,并在第一工作模式下以第二功率因数转换转换器中的电,并以第三功率因数发电,其中第三功率因数大于 第一功率因数并且以第四功率因数转换转换器中的电力,其中在第二操作模式中第四功率因数小于第二功率因数,使得在第二操作模式中的发电机系统的功率输出基本相等 在第一操作模式下发电机系统的功率输出,并且减少发电机电流。

    OVERVOLTAGE CLIPPING DEVICE FOR A WIND TURBINE AND METHOD
    3.
    发明申请
    OVERVOLTAGE CLIPPING DEVICE FOR A WIND TURBINE AND METHOD 有权
    用于风力涡轮机的过压切割装置和方法

    公开(公告)号:US20130234434A1

    公开(公告)日:2013-09-12

    申请号:US13412662

    申请日:2012-03-06

    申请人: Andre Langel

    发明人: Andre Langel

    IPC分类号: H02P9/00 H02H3/20

    摘要: An overvoltage clipping device for clipping an overvoltage occurring at a main transformer of a wind turbine is provided. The overvoltage clipping device includes a detection unit for detecting an actual voltage level at the main transformer. The determination unit which is operatively connected to the detection unit determines whether the actual voltage level is above a predetermined reference voltage level. At least one switching unit is provided which is operatively connected to the determination unit for electrically coupling at least two transformer terminals of the main transformer. The control unit drives the switching unit if the detected actual voltage level is above the predetermined reference voltage level such that the at least two transformer terminals are electrically coupled to each other by the switching unit.

    摘要翻译: 提供一种用于限制在风力涡轮机的主变压器处发生的过电压的过电压限幅装置。 过电压限幅装置包括用于检测主变压器的实际电压电平的检测单元。 可操作地连接到检测单元的确定单元确定实际电压电平是否高于预定参考电压电平。 提供至少一个开关单元,其可操作地连接到确定单元,用于电耦合主变压器的至少两个变压器端子。 如果检测到的实际电压电平高于预定参考电压电平,则控制单元驱动开关单元,使得至少两个变压器端子通过开关单元彼此电耦合。

    METHOD AND APPARATUS FOR REDUCTION OF HARMONICS IN A POWER SUPPLY
    5.
    发明申请
    METHOD AND APPARATUS FOR REDUCTION OF HARMONICS IN A POWER SUPPLY 有权
    用于减少电源中谐波的方法和装置

    公开(公告)号:US20110133563A1

    公开(公告)日:2011-06-09

    申请号:US12763249

    申请日:2010-04-20

    IPC分类号: H02J3/38 H02P9/04

    摘要: A power supply device adapted for supplying electrical power to a load comprises a first electrical generator adapted for providing a first output current having a first phase angle; at least a second electrical generator adapted for providing a second output current having a second phase angle independent of the first phase angle; and a combination unit adapted for combining the first output current and the second output current to a combination current having reduced harmonics compared to the first and second output currents.

    摘要翻译: 适于向负载提供电力的电源装置包括适于提供具有第一相位角的第一输出电流的第一发电机; 至少第二发电机,适于提供具有独立于所述第一相位角的第二相位角的第二输出电流; 以及组合单元,适于将第一输出电流和第二输出电流组合到具有与第一和第二输出电流相比降低的谐波的组合电流。

    TRANSFORMER ARRANGEMENT FOR WIND TURBINE AND METHOD FOR CONTROLLING VOLTAGE
    7.
    发明申请
    TRANSFORMER ARRANGEMENT FOR WIND TURBINE AND METHOD FOR CONTROLLING VOLTAGE 审中-公开
    用于风力发电机的变压器装置和用于控制电压的方法

    公开(公告)号:US20130301167A1

    公开(公告)日:2013-11-14

    申请号:US13466193

    申请日:2012-05-08

    申请人: Andre Langel

    发明人: Andre Langel

    IPC分类号: H02H7/06

    CPC分类号: H02H7/06

    摘要: A transformer arrangement for a wind energy system is described. The transformer arrangement includes a transformer core; a primary winding wound around the transformer core and adapted for being connected to an electrical load; a first secondary winding wound around the transformer core and adapted for being connected to a power source; and a control system for controlling the first transformer. Further, the transformer arrangement includes a part of a second secondary winding adapted for being connected to a power source and adapted for reducing at least one of for the voltage of the first secondary winding and the voltage applied to the electrical components of the wind turbine in the case of an overvoltage event.

    摘要翻译: 描述了用于风能系统的变压器装置。 变压器布置包括变压器铁心; 缠绕在变压器铁芯上并适于连接到电负载的初级绕组; 缠绕在变压器芯上并适于连接到电源的第一次级绕组; 以及用于控制第一变压器的控制系统。 此外,变压器布置包括适于连接到电源的第二次级绕组的一部分,并且适于减小第一次级绕组的电压和施加到风力涡轮机的电气部件的电压中的至少一个 过电压事件的情况。

    Method and apparatus for reduction of harmonics in a power supply
    8.
    发明授权
    Method and apparatus for reduction of harmonics in a power supply 有权
    降低电源谐波的方法和装置

    公开(公告)号:US08405251B2

    公开(公告)日:2013-03-26

    申请号:US12763249

    申请日:2010-04-20

    IPC分类号: H02J3/00 F03D9/00 H02P9/00

    摘要: A power supply device adapted for supplying electrical power to a load comprises a first electrical generator adapted for providing a first output current having a first phase angle; at least a second electrical generator adapted for providing a second output current having a second phase angle independent of the first phase angle; and a combination unit adapted for combining the first output current and the second output current to a combination current having reduced harmonics compared to the first and second output currents.

    摘要翻译: 适于向负载提供电力的电源装置包括适于提供具有第一相位角的第一输出电流的第一发电机; 至少第二发电机,适于提供具有独立于所述第一相位角的第二相位角的第二输出电流; 以及组合单元,适于将第一输出电流和第二输出电流组合到具有与第一和第二输出电流相比降低的谐波的组合电流。

    Detection of islanding in power grids
    9.
    发明授权
    Detection of islanding in power grids 有权
    检测电网孤岛

    公开(公告)号:US07376491B2

    公开(公告)日:2008-05-20

    申请号:US11259673

    申请日:2005-10-26

    IPC分类号: G05D11/00

    摘要: A method for detecting islanding conditions in an electrical grid having a power line voltage includes monitoring a detectable signal different from the power line voltage at a generating station, superimposing the detectable signal onto the power line voltage at a grid point outside the generating station, and switching the generating station from a grid-connected mode of operation to an islanded mode of operation when the signal to which the detector is responsive is determined to be absent.

    摘要翻译: 用于检测具有电力线电压的电网中的孤岛状况的方法包括监测与发电站处的电力线电压不同的可检测信号,将可检测信号叠加在发电站外的电网线电压处,以及 当发现检测器响应的信号被确定为不存在时,将发电站从并网运行模式切换到孤岛运行模式。

    Overvoltage clipping device for a wind turbine and method
    10.
    发明授权
    Overvoltage clipping device for a wind turbine and method 有权
    风力发电机用过电压限幅装置及方法

    公开(公告)号:US09088150B2

    公开(公告)日:2015-07-21

    申请号:US13412662

    申请日:2012-03-06

    申请人: Andre Langel

    发明人: Andre Langel

    摘要: An overvoltage clipping device for clipping an overvoltage occurring at a main transformer of a wind turbine is provided. The overvoltage clipping device includes a detection unit for detecting an actual voltage level at the main transformer. The determination unit which is operatively connected to the detection unit determines whether the actual voltage level is above a predetermined reference voltage level. At least one switching unit is provided which is operatively connected to the determination unit for electrically coupling at least two transformer terminals of the main transformer. The control unit drives the switching unit if the detected actual voltage level is above the predetermined reference voltage level such that the at least two transformer terminals are electrically coupled to each other by the switching unit.

    摘要翻译: 提供一种用于限制在风力涡轮机的主变压器处发生的过电压的过电压限幅装置。 过电压限幅装置包括用于检测主变压器的实际电压电平的检测单元。 可操作地连接到检测单元的确定单元确定实际电压电平是否高于预定参考电压电平。 提供至少一个开关单元,其可操作地连接到确定单元,用于电耦合主变压器的至少两个变压器端子。 如果检测到的实际电压电平高于预定参考电压电平,则控制单元驱动开关单元,使得至少两个变压器端子通过开关单元彼此电耦合。