中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

25 records (took 0.017 seconds)

    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE
    2.
    发明公开
    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE 有权
    VERFAHREN ZUM BETREIBEN EINER WINDTURBINE SOWIE系统DAFÜR

    公开(公告)号：EP2655871A1

    公开(公告)日：2013-10-30

    申请号：EP11804948.5

    申请日：2011-12-20

    Applicant: Vestas Wind Systems A/S

    Inventor： GUPTA, Amit Kumar ,  TRIPATHI, Anshuman

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

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

    Abstract: According to a method of the present invention, a method of operating a wind turbine comprising a power generator, a generator side converter connected to the power generator, a line side converter connected to a power grid through power components, and a DC-link connected between the generator side converter and the line side converter is provided, the method comprising: monitoring the grid voltages on the power grid for overvoltage events; if an overvoltage event is detected, operating the line side converter in an overmodulation range for at least a part of the duration of the overvoltage event.

    Abstract translation: 根据本发明的方法，一种运行风力涡轮机的方法，包括发电机，连接到发电机的发电机侧转换器，通过功率部件连接到电力网的线路侧转换器，以及连接有直流链路 提供发电机侧转换器和线路侧转换器之间的方法，该方法包括：监视电网上的电网电压以实现过电压事件; 如果检测到过电压事件，则在过电压事件的持续时间的至少一部分时间内将线路侧转换器工作在过调制范围内。

    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREOF
    6.
    发明公开
    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREOF 审中-公开
    一种操作风力涡轮机的方法以及适合的系统

    公开(公告)号：EP2875238A1

    公开(公告)日：2015-05-27

    申请号：EP13739350.0

    申请日：2013-07-12

    Applicant: Vestas Wind Systems A/S

    Inventor： GUPTA, Amit Kumar ,  PRATAMA, Ryan Arya

    IPC: F03D7/02 ,  F03D9/00

    CPC classification number: H02P9/102 ,  F03D7/0224 ,  F03D7/0284 ,  F03D9/255 ,  F05B2270/107 ,  F05B2270/337 ,  H02P2101/15 ,  Y02E10/723

    Abstract: A method of operating a wind turbine is provided. The wind turbine comprises a turbine rotor with at least one blade having a variable pitch angle, a power generator, and a power converter connected to the power generator via a first circuit breaker and to a power grid via a second circuit breaker. According to the method, overvoltage events at the power grid are monitored. If an overvoltage event is detected, the method comprises opening the first circuit breaker and the second circuit breaker, disabling active operation of the power converter, connecting a power dissipating unit to the power generator to dissipate power output from the power generator, and moving the pitch angle of the at least one blade towards a feathered position.

    Abstract translation: 提供了一种操作风力涡轮机的方法。 该风力涡轮机包括具有至少一个具有可变桨距角的叶片的涡轮机转子，发电机和经由第一断路器连接到发电机并经由第二断路器连接到电网的电力转换器。 根据该方法，监测电网的过电压事件。 如果检测到过电压事件，则该方法包括断开第一断路器和第二断路器，禁用功率变换器的有效操作，将功率消耗单元连接到功率发生器以耗散从功率发生器输出的功率， 该至少一个叶片朝向顺桨位置的倾斜角。

    A WIND TURBINE GENERATOR
    7.
    发明公开
    A WIND TURBINE GENERATOR 审中-公开
    风力涡轮发电机

    公开(公告)号：EP2798718A2

    公开(公告)日：2014-11-05

    申请号：EP12810059.1

    申请日：2012-12-20

    Applicant: Vestas Wind Systems A/S

    Inventor： GUPTA, Amit Kumar ,  GUPTA, Manoj

    IPC: H02J3/38 ,  H02M5/458

    CPC classification number: F03D7/00 ,  F03D9/255 ,  F03D9/257 ,  H02J3/386 ,  H02M5/458 ,  H02P2101/15 ,  Y02E10/763

    Abstract: A wind turbine generator is disclosed herein. In a described embodiment, the wind turbine generator comprises an electrical generator 101 configured to generate AC signals, a plurality of power converters 110,112,111 operated by a gating signal with each power converter configured to convert the AC signals from the electrical generator 101 into fixed frequency AC signals. The wind turbine generator further comprises a controller configured to enter a fault mode when a grid voltage falls outside an acceptable threshold, and during the fault mode the controller is configured to provide a reactive current reference dependant on a grid voltage distant from the wind turbine generator. A method of controlling a wind turbine generator is also disclosed.

    Abstract translation: 这里公开了一种风力涡轮发电机。 在所描述的实施例中，风力涡轮发电机包括被配置为产生AC信号的发电机101，由选通信号操作的多个功率转换器110,112,111，每个功率转换器被配置为将来自发电机101的AC信号转换成固定频率AC 信号。 该风力涡轮发电机还包括控制器，该控制器被配置为当电网电压落在可接受的阈值之外时进入故障模式，并且在故障模式期间，控制器被配置为提供取决于远离风力涡轮发电机的电网电压的无功电流参考 。还公开了一种控制风力涡轮发电机的方法。

    COMPENSATING ELECTRICAL HARMONICS ON THE ELECTRICAL GRID
    9.
    发明公开
    COMPENSATING ELECTRICAL HARMONICS ON THE ELECTRICAL GRID 审中-公开
    补偿谐波电电网

    公开(公告)号：EP3011666A1

    公开(公告)日：2016-04-27

    申请号：EP13731670.9

    申请日：2013-06-18

    Applicant: Vestas Wind Systems A/S

    Inventor： GUPTA, Amit Kumar ,  GUPTA, Manoj ,  GURU, Dilip Kumar

    IPC: H02M1/12 ,  H02J3/01

    CPC classification number: H02J3/01 ,  G01R19/0092 ,  G01R27/02 ,  H02J3/1842 ,  H02J3/382 ,  H02J3/383 ,  H02J3/386 ,  H02M1/12 ,  H02M7/44 ,  Y02E10/763 ,  Y02E40/22

    Abstract: The invention relates to a control system for compensating undesired electrical harmonics on an electrical grid. Part of the control system referred to as a harmonic compensator is operatively connected with a power inverter of a power producing unit supplying power to the grid. Another part of the control system, referred to as an impedance detector, is operatively connected to a point of coupling to which point one or more power producing units are connected. The impedance detector is configured to scan impedances as a function of frequency to identify frequencies of impedance peaks which peaks are indicative of resonance frequencies. The determined resonance frequencies are supplied to one or more the harmonic compensators. A compensator determines control signals to the inverter which causes the inverter to inject compensation currents to the grid which currents will damp currents oscillating at or close to the determined resonance frequency.

    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE
    10.
    发明授权
    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE 有权
    方法操作风力涡轮机及适宜系统及其

    公开(公告)号：EP2649306B1

    公开(公告)日：2016-03-23

    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: F03D9/00 ,  H02J3/38

    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.

Patent Agency Ranking