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公开(公告)号：US20210006068A1
公开(公告)日：2021-01-07
申请号：US16956923
申请日：2018-11-20
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Manoj GUPTA , Ravi KUMAR , Janakiraman SIVASANKARAN , Thomas Schmidt GRAU , Martin Ansbjerg KJÆR , Kouroush NAYEBI , John NIELSEN , Jesper Sandberg THOMSEN
Abstract: A method for operating a renewable energy power plant comprising a plurality of renewable energy generators. The method comprises: identifying a predetermined condition of the renewable energy power plant, of the grid, or of the connection between the renewable energy power plant and the grid, the predetermined condition indicating a weak grid interconnection between the renewable energy power plant and the grid; and controlling each renewable energy generator in an adaptive active power mode in response to recovery of the grid from a voltage deviation. The adaptive active power mode comprises: determining a thermal capacity of a chopper resistor of the renewable energy generator; calculating, based upon the determined thermal capacity, a limit level of rate of change of active power output that may be implemented by the renewable energy generator; and operating the renewable energy generator to output active power at the calculated rate of change limit level.
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12.发明申请公开(公告)号：US20180355848A1
公开(公告)日：2018-12-13
申请号：US15780733
申请日：2016-11-25
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Mu WEI , Martin Ansbjerg KJÆR , Kouroush NAYEBI , Jesper Sandberg THOMSEN , Eik HERBSLEB
IPC: F03D7/02 , F03D7/04 , G05B19/042 , H02J3/38
CPC classification number: F03D7/0284 , F03D7/026 , F03D7/0272 , F03D7/048 , F05B2220/706 , F05B2270/1033 , F05B2270/309 , F05B2270/327 , F05B2270/335 , G05B19/042 , G05B2219/2619 , H02J3/386 , Y02E10/723 , Y02E10/763
Abstract: A method and associated control arrangement are disclosed for controlling a power output of a wind power plant (WPP) according to a predetermined power ramp rate limit, the WPP comprising a plurality of wind turbine generators (WTGs). The method comprises receiving a first signal indicating that a first WTG is in a ready state to begin producing power. The method further comprises, upon determining that, responsive to the received first signal, beginning power production of the first WTG at a predetermined default power ramp rate would cause the power output of the WPP to exceed the power ramp rate limit, controlling power production of the first WTG using at least one of: a first delay, a power ramp rate reference less than the default power ramp rate, and a power reference less than a nominal power output of the first WTG.
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公开(公告)号：US20180195493A1
公开(公告)日：2018-07-12
申请号：US15575589
申请日：2016-05-23
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jorge Martinez GARCIA , Martin Ansbjerg KJÆR , Fabio CAPONETTI
CPC classification number: F03D7/0284 , F03D7/0232 , F03D7/042 , F05B2240/31 , F05B2240/311 , F05B2270/337 , Y02E10/721 , Y02E10/723
Abstract: Disclosed are a method and a control arrangement for frequency regulation of an electrical grid operatively coupled with at least one wind turbine generator. The method includes operating the wind turbine generator to consume electrical power from the electrical grid. Further disclosed is a method for increasing a ramp rate capacity of a wind power plant comprising a plurality of wind turbine generators. The method includes operating at least one of the plurality of wind turbine generators to consume electrical power.
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公开(公告)号：US20170152836A1
公开(公告)日：2017-06-01
申请号：US15321817
申请日：2015-06-22
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Martin Ansbjerg KJÆR , Jesper Sandberg THOMSEN
IPC: F03D7/02 , G05B19/402 , F03D17/00 , F03D7/04 , F03D1/06
CPC classification number: F03D7/0224 , F03D1/0675 , F03D7/028 , F03D7/047 , F03D17/00 , F05B2220/706 , F05B2270/1033 , F05B2270/309 , F05B2270/32 , F05B2270/335 , F05B2270/504 , F05B2270/703 , G05B19/402 , G05B2219/2619 , Y02E10/721 , Y02E10/723 , Y02E10/725
Abstract: The present invention relates to control of the power output of wind turbine generator that operates in derated mode to generate a produced power output level lower than an available power level. A pitch system 48 sets the blade pitch of a rotor to a pitch value based on the received power reference signal 40. A power system 43 controls the produced power output power level of the wind turbine to the requested power output level. Moreover, the blade pitch of the rotor is further controlled by a pitch feedback control loop 47 that modifies the pitch value based on a difference between the produced power output level 46 and the requested power output level 40.
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公开(公告)号：US20160230741A1
公开(公告)日：2016-08-11
申请号：US15022876
申请日：2014-09-16
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Per BRATH , Martin Ansbjerg KJÆR , Jesper Sandberg THOMSEN
CPC classification number: F03D7/0224 , F03D1/0666 , F03D7/043 , F03D7/048 , F03D17/00 , Y02E10/721 , Y02E10/723
Abstract: The invention relates to a method of controlling a wind turbine, the wind turbine comprising wind turbine blades attached to a rotor hub and a control system for pitching the blades relative to the hub. The method comprises providing wake sectors assigned to different wind directions and providing a normal pitch schedule to control an output parameter of the wind turbine (e.g. power, rotational speed), comprising pitch reference values as a function of the wind speed and at least one of the parameters of thrust coefficient C, and axial induction factor a. Further, is provided a modified pitch schedule to control a modified output parameter of the wind turbine, comprising pitch reference values in dependence of the wind speed and at least one modified parameter of the thrust coefficient and/or the axial induction factor. Upon receiving indications of a wind speed and a wind direction at the wind turbine is determined a pitch reference value for the wind turbine blades according to the normal pitch schedule if the wind direction falls outside the wake sector and otherwise according to the modified pitch schedule. The wind turbine is then controlled according to the pitch reference value. The invention further relates to a method of controlling the wind turbines in a wind park, wherein each wind turbine in the park is controlled locally according to the above mentioned control method.
Abstract translation: 本发明涉及一种控制风力涡轮机的方法，所述风力涡轮机包括附接到转子毂的风力涡轮机叶片和用于相对于所述毂倾斜叶片的控制系统。 该方法包括提供分配给不同风向的尾流扇区，并且提供正常俯仰调度以控制风力涡轮机的输出参数（例如功率，转速），包括作为风速的函数的俯仰参考值和至少一个 推力系数C的参数和轴向感应系数a。 此外，提供了一种修改的桨距计划，用于控制风力涡轮机的改进的输出参数，包括根据风速和推力系数和/或轴向感应系数的至少一个修改参数的俯仰参考值。 在风力涡轮机上接收到风速指示和风向的指示如果风向落在尾流扇区之外，则根据正常俯仰调度方式确定风力涡轮机叶片的俯仰参考值，或者根据修改的俯仰调度来确定。 然后根据俯仰基准值来控制风力涡轮机。 本发明还涉及一种控制风力发电场中的风力涡轮机的方法，其中根据上述控制方法对园区中的每个风力涡轮机进行局部控制。
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Patent Agency Ranking
公开(公告)号：US20210167603A1
公开(公告)日：2021-06-03
申请号：US16065591
申请日：2016-12-12
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Dumitru-Mihai VALCAN , Jorge Martinez GARCIA , Kouroush NAYEBI , Jesper Sandberg THOMSEN , Martin Ansbjerg KJÆR
Abstract: A method for controlling a wind power plant comprising a plurality of wind turbine generators, wherein the method comprises: deriving an estimated value for electrical losses in the wind power plant, deriving a measured value for electrical losses in the wind power plant, based on a difference between an aggregated power production from the plurality of wind turbine generators and a power measurement at a point of common coupling; applying the estimated value for electrical losses and the measured value for electrical losses in an active power control loop, comprising a regulator; and controlling by means of the active power control loop an active power production of the wind power plant at the point of common coupling.
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公开(公告)号：US20190048852A1
公开(公告)日：2019-02-14
申请号：US15759781
申请日：2016-09-08
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Martin Ansbjerg KJÆR , Jorge Martinez GARCIA , Eik HERBSLEB
Abstract: A method, control arrangement, and wind power plant (WPP) comprising a plurality of wind turbine generators (WTGs) are disclosed. The method includes operating, responsive to a received power demand corresponding to the WPP, a boost group of one or more WTGs of the plurality of WTGs to begin producing a boosted power output, wherein the boosted power output of each of the one or more WTGs of the boost group is regulated independent of the power demand. The method further includes determining, based on a measured amount of boosted power production, power production set points for a regulation group of one or more different WTGs of the plurality of WTGs to thereby meet the power demand.
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公开(公告)号：US20180171977A1
公开(公告)日：2018-06-21
申请号：US15738170
申请日：2016-06-22
Applicant: VESTAS WIND SYSTEMS A/S
IPC: F03D7/02 , F03D7/04 , G05B19/042
Abstract: The present invention relates to a method for controlling a wind turbine, the wind turbine comprises a rotor connected to a generator, and a rotational speed controller configured to control a speed of the rotor in response to a generator speed reference, and a power controller to control an electric power production, the method comprises the step for receiving a boost command to request a power boost event, so to increase the electrical power production, and imposing a dead band with a dead zone value limit to the rotational speed controller, and wherein the dead band imposes a zero signal to be send to the rotational speed controller, when a speed error is within the dead zone value limit and wherein the dead band imposes an error signal to be send to the rotational speed controller, when a speed error is greater than the dead zone value limit, the error signal being a function of the speed error and the dead zone value limit. The invention also relates to a wind power plant comprising a power plant controller and at least one wind turbine with a control system according to the above mentioned method.
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公开(公告)号：US20180156196A1
公开(公告)日：2018-06-07
申请号：US15735513
申请日：2016-06-09
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Martin Ansbjerg KJÆR , Jesper Sandberg THOMSEN , Jacob Krogh KRISTOFFERSEN , Jacob Deleuran GRUNNET , Eik HERBSLEB
IPC: F03D7/02
Abstract: The invention relates to a control system for a wind turbine. The wind turbine comprises a power generator configured to generate power dependent on a power reference and a pitch system configured to adjust the pitch of a blade of the wind turbine dependent on a pitch request. The control system comprises a controller configured to determine the pitch request dependent on an adjustable gain. A gain scheduler comprised by the control system is configured to set the adjustable gain to an increased gain value if a rate of change of the power reference, e.g. an external power reference, exceeds a threshold.
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公开(公告)号：US20170328342A1
公开(公告)日：2017-11-16
申请号：US15532871
申请日：2015-11-30
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Martin Ansbjerg KJÆR , Jesper Sandberg THOMSEN , Robert GRØN-STEVENS
Abstract: The invention relates to a method for limiting structural loads in a wind turbine in situations where the power produced by the wind turbine is increased or decreased. The limitation of structural loads is achieved by restricting the power ramp rate, i.e. the rate of change of increases or decreases in produced power. The restriction is only invoked if a maximum change of the produced power or the corresponding internal power reference within a time window exceeds a given threshold.
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