公开(公告)号：US11378060B2

公开(公告)日：2022-07-05

申请号：US16830796

申请日：2020-03-26

申请人： Nordex Energy GmbH

发明人： Detlef Drossel ,  Oliver Fleischmann

IPC分类号： F03D7/02 ,  F03D7/04 ,  F03D13/35

摘要： A method is disclosed for controlling a wind turbine, where the wind turbine includes with a tower and a rotor and comprises having at least one rotor blade with an adjustable blade pitch angle, and where a change in a power value takes place in a time interval (TE) and by the control of one or more operating parameters which determine power to be fed in by the wind turbine. The method comprises determining a parameterized time function of a tower deflection for the time interval (TE). A series of boundary conditions are defined for the parameterized time function of the tower deflection and a thrust of the rotor of the wind turbine is determined for the parameterized time function of the tower deflection. A function is then calculated for controlling the one or more operating parameters from the thrust of the rotor.

公开(公告)号：US20200318610A1

公开(公告)日：2020-10-08

申请号：US16838306

申请日：2020-04-02

申请人： Nordex Energy GMBH

发明人： Detlef Drossel ,  Ulrich Harms

IPC分类号： F03D7/02 ,  F03D9/25 ,  F03D7/04

摘要： A method for operating a wind turbine comprises capturing an actual value of a fed-in power (Pact) and determining a power deviation based on the captured actual value of the fed-in power (Pact). A signal value is set for a correction of a setpoint value for the rotor blade pitch angle when one of the power deviation exceeds a predetermined maximum value and the power deviation exceeds a maximum gradient threshold value over a specified period of time. The signal value is cleared when one of the power deviation falls below a predetermined minimum value and a grid voltage value is located in a predetermined band around a specified target voltage value. A correction value (dβ/dt*) is determined for the setpoint value of the rotor blade pitch angle depending on the power deviation and applied to a rotor blade pitch control when the signal value is set.

公开(公告)号：US10739315B2

公开(公告)日：2020-08-11

申请号：US15847495

申请日：2017-12-19

申请人： Nordex Energy GmbH

发明人： Ocke-Philipp Hansen ,  Stephan Boerner ,  Jan Fischer

IPC分类号： G01N29/26 ,  G01N29/30 ,  G01M13/045 ,  G01N29/22 ,  G01N29/04 ,  G01N29/44 ,  F16C33/58 ,  F16C19/52 ,  F16C41/00

摘要： A method for examining the raceway of a large roller bearing in a wind turbine, in which a raceway of the large roller bearing is measured using an ultrasonic measuring unit mounted on the bearing housing, wherein the ultrasonic measuring unit detects two edges of the raceway and the relative position and/or formation thereof in relation to one another is measured.

公开(公告)号：US10273705B2

公开(公告)日：2019-04-30

申请号：US15853523

申请日：2017-12-22

申请人： Nordex Energy GmbH

发明人： Ibrahim Tuerk

IPC分类号： E04H12/00 ,  E04H12/08 ,  F03D13/20 ,  F03D13/10 ,  E04H12/34 ,  B23D45/12

摘要： A steel tower for a wind turbine, including a plurality of cylindrical and/or conical tower sections arranged one above another in a tower lengthwise direction which are joined together via horizontally running annular flanges, at least one tower section having at least two section pieces, which are welded together along their adjacent, horizontal and annular end faces and are welded to a horizontal annular flange along each of the free uppermost and lowermost end face, and the at least one tower section being divided into a plurality of section segments which are joined together by longitudinal profiles and connecting means to form a circumferential tower section. At least one of the annular flanges has at least two separation sections in which the annular flange is divided into annular flange segments. The at least one annular flange forms a monolithic annular flange prior to a severing of the section segments.

公开(公告)号：US10260482B2

公开(公告)日：2019-04-16

申请号：US15226465

申请日：2016-08-02

申请人： Nordex Energy GmbH

发明人： Nick Ohlerich

IPC分类号： F03D80/30 ,  F03D80/40 ,  F03D1/06

摘要： A wind turbine rotor blade is provided. The wind turbine rotor blade has a lightning receptor, a first electrical line and a potential equalization arrangement which has a first electrode, which is connected to the lightning receptor, and a second electrode, which is connected to the first electrical line, a spark gap being formed between the two electrodes. The two electrodes are arranged on an outer side of the wind turbine rotor blade and are exposed to the surrounding air flow.

公开(公告)号：US20190058425A1

公开(公告)日：2019-02-21

申请号：US16104536

申请日：2018-08-17

申请人： Nordex Energy GmbH

发明人： Simon De Rijcke ,  Niels Hamann ,  Christian Wessels

IPC分类号： H02P9/00 ,  F03D9/25 ,  F03D7/02

摘要： A method for controlling a wind turbine comprising inputting an actual value of rotational speed and a rotational speed setpoint into a control and outputting a set point value for a generator torque from the control. Inputting the set point value for the generator torque into a limiter with a predefinable upper and lower limit and outputting a limited torque value that is fed into a converter control. Increasing the actual value of the fed-in electrical power by an additional amount of power in response to a boost signal, wherein the fed-in electrical power and the additional amount of power are combined into an aggregated power setpoint value. Determining the set point value for the generator torque from the aggregated power setpoint value and applying the set point value for the generator torque in the boost operation to the limiter both as the upper limit and as the lower limit.

公开(公告)号：US20190055925A1

公开(公告)日：2019-02-21

申请号：US16104554

申请日：2018-08-17

申请人： Nordex Energy GmbH

发明人： Simon De Rijcke ,  Niels Hamann ,  Christian Wessels

IPC分类号： F03D7/02 ,  H02P9/02 ,  F03D9/25 ,  F03D7/04 ,  G05B11/42

CPC分类号： F03D7/0284 ,  F03D7/0272 ,  F03D7/042 ,  F03D9/255 ,  F05B2220/70646 ,  F05B2270/309 ,  F05B2270/327 ,  F05B2270/335 ,  F05B2270/701 ,  F05B2270/705 ,  G05B11/42 ,  G05F1/10 ,  H02P9/007 ,  H02P9/02 ,  H02P2101/15

摘要： A method is provided for controlling a wind turbine that has a generator that is controlled via a converter in a boost operation, in which an electrical power that is fed into an electrical transmission network is increased via a generative deceleration of the generator. The method comprises using a control to determining a set point value for a generator torque depending on an actual value of a rotational speed. The determined set point value for the generator torque is applied to a generator via a limiter with a predefinable upper and lower limit. Determining the set point value for the generator torque in boost operation that leads to an increased fed-in electrical power in response to a boost signal; and limiting a temporal change of the set point value for the generator torque in a recovery operation in response to a recovery signal.

公开(公告)号：US10202966B2

公开(公告)日：2019-02-12

申请号：US15226493

申请日：2016-08-02

申请人： Nordex Energy GmbH

发明人： Thomas Lipka ,  Jochen Kremer

IPC分类号： F03D80/30 ,  F03D80/40 ,  F03D1/06

摘要： A wind turbine rotor blade is provided. The wind turbine blade has a lightning receptor, a first electric line, and a potential equalization arrangement having a first electrode, which is connected to the lightning receptor, and a second electrode, which is connected to the first electric line, a spark gap being formed between the two electrodes, mutually facing sides of the two electrodes forming an air flow channel, which is arranged such that the ambient air that is incident when the wind turbine rotor blade is in operation flows through it.

公开(公告)号：US10199816B2

公开(公告)日：2019-02-05

申请号：US14680964

申请日：2015-04-07

申请人： Nordex Energy GmbH

发明人： Nick Ohlerich

IPC分类号： F03D80/30 ,  F03D1/06 ,  H02G13/00

摘要： A wind turbine rotor blade has a blade root, a lightning protection conductor for dissipating a lightning current toward the blade root, a suction side, a pressure side, a lightning receptor arranged on the suction side, a lightning receptor arranged on the pressure side, and an integrally formed lightning receptor base, which is arranged in the wind turbine rotor blade and on which the two lightning receptors and the lightning protection conductor are fastened, wherein the lightning receptor base includes two fastening rings, which each have an internal thread, into which one of the two lightning receptors is screwed, and an outer diameter and an outer side, wherein the outer sides of the fastening rings are arranged with a spacing of less than one outer diameter from one another.

公开(公告)号：US09605649B2

公开(公告)日：2017-03-28

申请号：US13930698

申请日：2013-06-28

申请人： Nordex Energy GmbH

发明人： Doosttalab Mehdi

IPC分类号： F03D1/06

CPC分类号： F03D1/0641 ,  F03D1/0633 ,  F03D1/065 ,  F03D1/0675 ,  F05B2240/30 ,  Y02E10/721

摘要： A wind turbine rotor blade has a longitudinal axis, a blade root, a blade tip, a pressure side, a suction side and an aerodynamic profile which, in a longitudinal section of the rotor blade, has a profile chord and a thick trailing edge. The rotor blade includes a multiplicity of flow deflection elements which are arranged on the thick trailing edge and have respective inflow surfaces which are shaped and arranged such that a radial flow running in the direction from the blade root toward the blade tip is diverted by the inflow surface in the direction of the profile chord.