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公开(公告)号：WO2017202428A1
公开(公告)日：2017-11-30
申请号：PCT/DK2017/050156
申请日：2017-05-16
Applicant: VESTAS WIND SYSTEMS A/S
Abstract: Aspects of the present invention relate to a method for controlling an amount of power to be delivered from a wind turbine generator to a power grid during an abnormal power grid event, the method comprising the steps of detecting an abnormal power grid event; controlling an active current delivered to the power grid in response to a measured or determined total active current; and controlling a reactive current delivered to the power grid in response to a measured or determined total reactive current. Aspects of the present invention further relate to a computer program product for carrying out the method as well as a wind turbine generator being capable of carrying out embodiments of the invention.
Abstract translation: 本发明的各方面涉及一种用于控制在异常电网事件期间从风力涡轮发电机输送到电网的功率量的方法，所述方法包括以下步骤：检测 异常电网事件; 响应于测量或确定的总有功电流来控制传送至电网的有功电流; 以及响应于测量或确定的总无功电流来控制传送到电网的无功电流。 本发明的各方面还涉及用于执行该方法的计算机程序产品以及能够执行本发明实施例的风力涡轮发电机。
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12.发明申请
公开(公告)号：WO2021148095A1
公开(公告)日：2021-07-29
申请号：PCT/DK2021/050015
申请日：2021-01-19
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： SUN, Bo , BIRIS, Ciprian , DINCAN, Catalin Gabriel , KJÆR, Philip Carne
IPC: H02J3/00 , H02J3/38 , H02J2300/28 , H02J3/001 , H02J3/00125 , H02J3/381
Abstract: A method of operating a power generating system for a wind turbine connected to an electrical grid, the power generating system comprising a power generator, a converter, a transformer and a tap changer, the method comprising; when operating the power generating system in a grid-forming configuration, monitoring a signal for detecting a voltage of the electrical grid which requires an increase in output voltage from the power generating system in order to maintain the grid voltage within a predetermined voltage range; and operating the tap changer to tap-up the transformer to provide at least part of the voltage increase required to maintain the grid voltage within the predetermined voltage range.
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公开(公告)号：WO2020057704A1
公开(公告)日：2020-03-26
申请号：PCT/DK2019/050267
申请日：2019-09-11
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： LUND, Torsten , BIRIS, Ciprian , TANGE, Kent , DOAN, Duy Duc , ANDERSEN, Gert Karmisholt
Abstract: This invention relates to a method of controlling at least one wind turbine (10) of a plurality of wind turbines connected to an electrical grid (28) at a predefined point in the electrical grid (28). The wind turbine comprises a DC link (48) connecting a generator side converter (44) to a line side converter (46), where the line side converter (46) is controlled according to a modulation index requested by a power converter controller (56). The method comprises determining a harmonic frequency signal 66 indicative of a harmonic frequency value at the predefined point in the electrical grid (28); determining a deviation (70) between the harmonic frequency signal (66) and a permissible harmonic frequency value; determining a permissible modulation index (78) based on the deviation (70); comparing the permissible modulation index (78) to the modulation index requested by the power converter controller (56); and, altering a DC link (48) voltage set-point based on the comparison between the permissible modulation index (78) and the requested modulation index.
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公开(公告)号：WO2018121821A1
公开(公告)日：2018-07-05
申请号：PCT/DK2017/050399
申请日：2017-11-29
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： BIRIS, Ciprian , DOAN, Duy Duc , NIELSEN, John Godsk
Abstract: A power conversion system for a wind turbine generator, comprising a machine-side converter having an AC voltage input from a generator and a DC voltage output to a DC link, wherein the machine-side converter is a modular multi-level converter comprising one or more converter legs corresponding to a respective one or more electrical phases of the generator, each of the converter legs comprising a plurality of converter cells, the system further comprising: a converter control module which provides the machine-side converter with a gate signal, and an electrical frequency estimation module configured to estimate the mean electrical frequency of the generator; wherein the gate signal has at least one mean switching frequency corresponding to at least one electrical phase of the generator; wherein the converter control module is configured to modulate the mean switching frequency of the gate signal in dependence on the mean electrical frequency of the generator.
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公开(公告)号：WO2017000945A1
公开(公告)日：2017-01-05
申请号：PCT/DK2016/050172
申请日：2016-06-09
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： ANDERSEN, Gert Karmisholt , BIRIS, Ciprian , ZHOU, Yi , GUPTA, Manoj , GANEPOLA, Vajira Suminda , MERRILD, Uffe C.
Abstract: A method is provided of controlling a doubly fed induction generator- (DFIG) wind turbine converter system if a sub-synchronous resonance event acts on the wind turbine. According to the method a sub-synchronous resonance event is detected. Thereupon, a switch from a non- SSR-control mode to a SSR-control mode is performed. At least one of the following activities is performed in the SSR-control mode, namely: (i) freezing rotor AC voltages in magnitude and phase, (ii) altering at least one rotor-current-controller gain (iii) altering at least one rotor-current-controller time constant, to dampen the effect of the SSR-event on the wind turbine.
Abstract translation: 如果副同步共振事件作用在风力涡轮机上，则提供一种控制双馈感应发电机（DFIG）风力涡轮机转换器系统的方法。 根据该方法，检测到副同步共振事件。 因此，执行从非SSR控制模式切换到SSR控制模式的切换。 在SSR控制模式中执行以下活动中的至少一个，即：（i）在大小和相位上冷冻转子AC电压，（ii）改变至少一个转子 - 电流 - 控制器增益（iii）改变至少一个 转子 - 电流 - 控制器时间常数，以减轻风力发电机组上的SSR事件的影响。
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Patent Agency Ranking16.发明公开
公开(公告)号：EP4094332A1
公开(公告)日：2022-11-30
申请号：EP21701039.6
申请日：2021-01-19
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： BIRIS, Ciprian , SUN, Bo
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公开(公告)号：EP3866293A3
公开(公告)日：2021-12-01
申请号：EP21152211.5
申请日：2021-01-19
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： BIRIS, Ciprian , SUN, Bo , KJÆR, Philip Carne
Abstract: A method (60) of operating a power generating system for a wind turbine connected to an electrical grid, the power generating system comprising a power generator, a converter, a transformer and a tap changer, the method comprising; monitoring a signal for detecting a voltage in the electrical grid which requires an increase in output voltage from the power generating system; determining a partial-load condition of the converter, which corresponds to the converter being configured to output a voltage which is substantially below its maximum output voltage; and upon determining the partial-load condition, operating the tap changer to tap down the transformer, and operating the converter to provide the required increase in output voltage from the power generating system.
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公开(公告)号：EP3866293A2
公开(公告)日：2021-08-18
申请号：EP21152211.5
申请日：2021-01-19
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： BIRIS, Ciprian , SUN, Bo , KJÆR, Philip Carne
Abstract: A method (60) of operating a power generating system for a wind turbine connected to an electrical grid, the power generating system comprising a power generator, a converter, a transformer and a tap changer, the method comprising; monitoring a signal for detecting a voltage in the electrical grid which requires an increase in output voltage from the power generating system; determining a partial-load condition of the converter, which corresponds to the converter being configured to output a voltage which is substantially below its maximum output voltage; and upon determining the partial-load condition, operating the tap changer to tap down the transformer, and operating the converter to provide the required increase in output voltage from the power generating system.
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公开(公告)号：EP3278447A1
公开(公告)日：2018-02-07
申请号：EP16709267.5
申请日：2016-03-08
Applicant: Vestas Wind Systems A/S
Abstract: The present invention relates to a method for operating a doubly fed induction generator wind power facility during an OVRT event, said the wind turbine facility being adapted to inject active and/or reactive current into an associated grid, the method comprising the steps of determining the occurrence of an over voltage grid event, and maintaining a grid-side inverter of the doubly fed induction generator wind power facility fully operable during the over voltage ride though event so as to maintain a controllable active and/or reactive current capability during the over voltage grid event,?
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公开(公告)号：EP3853987A2
公开(公告)日：2021-07-28
申请号：EP19853262.4
申请日：2019-09-19
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： BIRIS, Ciprian , TANGE, Kent , DOAN, Duy Duc , ANDERSEN, Gert Karmisholt , LUND, Torsten , MEYER, Lars
IPC: H02M5/458 , H02M7/5387
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