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1.发明申请BALANCING REACTIVE CURRENT BETWEEN A DFIG STATOR AND A GRID-SIDE INVERTER 审中-公开平衡DFIG定子和网侧逆变器之间的无功电流
公开(公告)号：WO2017202429A1
公开(公告)日：2017-11-30
申请号：PCT/DK2017/050157
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 reactive current provided from a wind turbine generator to a power grid during an abnormal power grid event, said wind turbine generator comprising a doubly-fed induction generator having a rotor and a stator, and a power converter coupling the rotor to the power grid, the power converter comprising a grid-side inverter, wherein the method comprises the step of balancing the reactive current provided to the power grid between a reactive stator current and a reactive grid-side inverter current, wherein the reactive grid-side inverter current is controlled in accordance with a reactive current capacity of a grid breaker receiving the reactive current provided by the grid-side inverter. Aspects of the present invention also relate to a wind turbine generator being capable of performing the method.
Abstract translation: 本发明的各方面涉及一种用于在异常电网事件期间控制从风力涡轮发电机提供给电力网的无功电流量的方法，所述风力涡轮发电机包括双馈 感应发电机，其具有转子和定子;以及功率转换器，其将所述转子耦合到所述电网，所述功率转换器包括网侧逆变器，其中所述方法包括以下步骤：将提供给所述电网的无功电流平衡到所述电网 定子电流和无功电网侧逆变器电流，其中无功电网侧逆变器电流根据接收由电网侧逆变器提供的无功电流的电网断路器的无功电流容量来控制。 本发明的各方面还涉及能够执行该方法的风力涡轮发电机。
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公开(公告)号：WO2017000946A1
公开(公告)日：2017-01-05
申请号：PCT/DK2016/050188
申请日：2016-06-16
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： ZHOU, Yu , ANDERSEN, Gert Karmisholt , GUPTA, Manoj , GANEPOLA, Vajira Suminda , BIRIS, Ciprian , COVA ACOSTA, Miguel Angel
CPC classification number: H02H3/46 , F03D7/0264 , F05B2270/107 , G01R19/2513 , G01R23/02 , H02H7/067
Abstract: A method is provided of protecting a wind turbine with a doubly-fed induction generator (DFIG) against a sub-synchronous resonance (SSR) event acting on the wind turbine. A plurality of power-output values or current-output values is measured over a given period of time that corresponds to a measurement cycle. It is determined whether power-output values or current-output-values measured in the at-least-one measurement cycle are indicative of an SSR-event critical for further operation of the wind turbine. The wind turbine is shut down if the measured power-output values or current-output values are indeed indicative of an SSR- event critical for operation of the wind turbine.
Abstract translation: 提供了一种利用双馈感应发电机（DFIG）来保护风力涡轮机以抵抗作用在风力涡轮机上的次同步共振（SSR）事件的方法。 在对应于测量周期的给定时间段内测量多个功率输出值或电流 - 输出值。 确定在至少一个测量周期中测量的功率输出值或电流 - 输出值是否表示对风力涡轮机的进一步操作至关重要的SSR事件。 如果测量的功率输出值或电流 - 输出值确实表示对于风力涡轮机的操作至关重要的SSR事件，则风力涡轮机关闭。
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公开(公告)号：WO2021028003A1
公开(公告)日：2021-02-18
申请号：PCT/DK2020/050232
申请日：2020-08-12
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： GERÇEK, Cem Özgür , HELLE, Lars , BIRIS, Ciprian
Abstract: This disclosure proposes procedures and systems for discharging system capacitors and de-energizing power transmission systems having Modular Multilevel Converter (MMC) topologies by intelligent control of MMC cell components including configuration of bypass and insert switches using integrated DC choppers to effectively de-energize MMC cell capacitors and/or DC-link capacitors under operating conditions such as after a normal stop, for protection against over-voltages, dumping turbine energy, and under certain hardware fault conditions.
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公开(公告)号：WO2016155739A1
公开(公告)日：2016-10-06
申请号：PCT/DK2016/050065
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,
Abstract translation: 本发明涉及一种用于在OVRT事件期间操作双馈感应发电机风力发电设备的方法，所述风力涡轮机设施适于将有源和/或无功电流注入到相关联的电网中，所述方法包括以下步骤： 发生过电压电网事件，并且保持双馈感应发电机风力发电设备的电网侧逆变器在过电压乘车事件期间完全可操作，以便在过电压期间保持可控的有功和/或无功电流能力 网格事件，
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公开(公告)号：WO2020057707A2
公开(公告)日：2020-03-26
申请号：PCT/DK2019/050274
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
Abstract: This invention concerns a method of controlling a power converter system 26 operating in an overmodulation region. The power converter system 26 comprises more than two current controllers 71, 73, 77, 79 a modulator 76 and a power converter 78, and the modulator 76 is configured to provide at least one modulated drive signal 87 to the power converter 78 based on voltage reference vector signals 82a, 82b, 82c, 82d from the more than two current controllers 71, 73, 77, 79. The method comprises determining the voltage reference vector signals 82a, 82b, 82c, 82d; determining compensated voltage reference vector signals 84a, 84b, 84c, 84d indicative of a fundamental frequency of a respective voltage reference vector signal 82a, 82b, 82c, 82d; and, determining the at least one modulated drive signal 87 based on a combination of the compensated voltage reference vector signals 84a, 84b, 84c, 84d.
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Patent Agency Ranking
公开(公告)号：WO2019120406A1
公开(公告)日：2019-06-27
申请号：PCT/DK2018/050329
申请日：2018-12-06
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： BIRIS, Ciprian , TANGE, Kent , DOAN, Duy Duc , LUND, Torsten , ANDERSEN, Gert Karmisholt
Abstract: The invention relates to a method for operating a wind turbine which comprises a power generator, a generator side converter, a grid side converter, a DC link electrically connected to an output of the generator side converter and an input of the grid side converter. The method comprises monitoring a wind turbine signal for detection of an operational condition which requires an increase of an output voltage of the grid side converter, upon detection of the operational condition, initiate an over-modulation mode wherein the grid side converter is operated with a modulation index in an over-modulation range, and upon the detection of the operational condition, initiate a DC-voltage adjustment mode wherein the a DC-voltage of the DC link is increased from a first voltage level towards a second voltage level.
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公开(公告)号：WO2018103800A1
公开(公告)日：2018-06-14
申请号：PCT/DK2017/050390
申请日：2017-11-24
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： BIRIS, Ciprian , GUPTA, Manoj , MØLLER, Henrik , NAYEBI, Kouroush , SIVASANKARAN, Janakiraman , WEI, Mu , BJØRN, Hans Kristian
Abstract: A wind power plant system comprising: a plurality of wind turbine generators each having a corresponding generator controller, and a power plant controller for controlling the power generated by the wind power plant system;wherein at least some of the plurality of generator controllers are each configured to: generate a model that indicates the thermal capacity of one or more components of the wind turbine generator, determine power capacity data from the model, said data relating to: at least one reactive power supply level and a corresponding time limit for which that reactive power supply level may be maintained, and transmit to the power plant controller the determined power capacity data, wherein the power plant controller is operable to receive the power capacity data from the plurality of generator controllers and to transmit respective power references to the plurality of generator controllers to control the power generated by the wind power plant system.
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8.发明申请
公开(公告)号：WO2021148094A1
公开(公告)日：2021-07-29
申请号：PCT/DK2021/050014
申请日：2021-01-19
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： BIRIS, Ciprian , SUN, Bo
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; monitoring a signal for detecting 5 an over-voltage condition in the electrical grid which requires a reduction in the output voltage from the power generating system; initiating a convertor response mode configured to provide at least part of the required voltage reduction; and initiating a transformer response mode configured to provide at least part of the required voltage reduction; wherein the transformer response mode comprises operating the tap changer 10 to adjust the output voltage from the power generating system.
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公开(公告)号：WO2020057707A3
公开(公告)日：2020-03-26
申请号：PCT/DK2019/050274
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
Abstract: This invention concerns a method of controlling a power converter system 26 operating in an overmodulation region. The power converter system 26 comprises more than two current controllers 71, 73, 77, 79 a modulator 76 and a power converter 78, and the modulator 76 is configured to provide at least one modulated drive signal 87 to the power converter 78 based on voltage reference vector signals 82a, 82b, 82c, 82d from the more than two current controllers 71, 73, 77, 79. The method comprises determining the voltage reference vector signals 82a, 82b, 82c, 82d; determining compensated voltage reference vector signals 84a, 84b, 84c, 84d indicative of a fundamental frequency of a respective voltage reference vector signal 82a, 82b, 82c, 82d; and, determining the at least one modulated drive signal 87 based on a combination of the compensated voltage reference vector signals 84a, 84b, 84c, 84d.
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公开(公告)号：WO2020057703A1
公开(公告)日：2020-03-26
申请号：PCT/DK2019/050266
申请日：2019-09-11
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： BIRIS, Ciprian , TANGE, Kent , ANDERSEN, Gert Karmisholt , DOAN, Duy Duc , LUND, Torsten , MEYER, Lars
IPC: H02M7/5395 , H02M7/5387
Abstract: This invention concerns a method of controlling a line side converter 46 of a power converter system 26 operating in an over-modulation range. The line side converter 46 comprises a controller 64 comprising a feedback control module 72 configured to output a feedback control signal 74 for modifying a drive signal 67 received by a modulator 68. The method comprises determining a modulation index within the over-modulation range; and, controlling the feedback control module 72 to adjust the feedback control signal 74 based on the modulation index.
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