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公开(公告)号：US12110872B2
公开(公告)日：2024-10-08
申请号：US18343468
申请日：2023-06-28
发明人： Muhanad Mahmoud , Jochen Stemberg
CPC分类号： F03D80/40 , F03D7/0276 , F03D7/028 , F05B2270/32 , F05B2270/323 , F05B2270/325
摘要： Method for de-icing at least one rotor blade of a rotor of a wind power installation, wherein the rotor is able to be operated at a variable rotating speed and the wind power installation generates an output from wind, said method comprising the following steps: checking for an icing situation on the at least one rotor blade, and changing from a normal operation of the wind power installation without de-icing to a de-icing operation if an icing situation has been identified; wherein in the de-icing operation the at least one rotor blade is heated for de-icing, and the rotating speed and/or the generated output are/is reduced as a function of at least one environmental condition of the wind power installation; wherein the at least one environmental condition is selected from the list including an external temperature of the wind power installation and a wind speed in the region of the wind power installation.
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公开(公告)号：US12098705B2
公开(公告)日：2024-09-24
申请号：US17348329
申请日：2021-06-15
发明人： Stefanie Bott , Arjun Brück
CPC分类号： F03D7/0224 , F03D7/048 , F03D9/25 , F05B2270/204 , F05B2270/32 , F05B2270/328 , F05B2270/337 , F05B2270/404
摘要： A method for operating a first wind power installation comprising a rotor having a rotor blade that is adjustable with a pitch angle, which generates an electrical power and in the wake of which a second wind power installation is located in at least one wake wind direction, comprising the step of: operating the first wind power installation in a substantially wake-free normal mode with a first pitch characteristic, and operating the first wind power installation in a wake-loaded wake mode with a second pitch characteristic, wherein the first pitch characteristic represents a first profile of the pitch angle and the second pitch characteristic represents a second profile of the pitch angle as a function of the electrical power, wherein the pitch angle of the second pitch characteristic is greater than the pitch angle of the first pitch characteristic for at least one range of the electrical power. The method seeks to maximise the annual energy production of the second wind power installation while complying with constraints, such as compliance with maximum thrust coefficients or wake-influenced turbulence intensities.
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公开(公告)号：US20240271599A1
公开(公告)日：2024-08-15
申请号：US18436960
申请日：2024-02-08
发明人： Martin Flögel , Enno von Aswege
CPC分类号： F03D7/0298 , F03D17/015 , F05B2260/964 , F05B2270/328 , F05B2270/334
摘要： The invention relates to a method for controlling a wind power installation, wherein the wind power installation has a tower, a generator and a rotor with rotor blades whose blade angle can be adjusted, an operating point is characterized by an installation power and a rotor speed, to change or maintain the operating point, at least one actuator is controlled in each case via a control variable, and controlling the actuator affects a vibration excitation of at least one component vibration of a vibratory component of the wind power installation, comprising the steps of: determining a preliminary control signal for the control variable, changing the preliminary control signal into a modified control signal in order to reduce the vibration excitation, wherein the preliminary control signal is changed into the modified control signal in such a way that at least one frequency component from the preliminary control signal with a frequency range around a natural frequency of the vibratory component is reduced, and/or at least one frequency component from a resulting excitation signal, which is expected from the preliminary control signal and excites the component vibration, with a frequency range around the natural frequency of the vibratory component is reduced, and controlling the actuator on the basis of the modified control signal.
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公开(公告)号：US12057702B2
公开(公告)日：2024-08-06
申请号：US17584772
申请日：2022-01-26
发明人： Johannes Brombach
CPC分类号： H02J3/381 , H02J3/48 , H02J2300/28
摘要： Provided is a method for monitoring a three-phase electricity supply grid. The grid has a topology with spatially distributed grid nodes. Grid nodes are in the form of observation nodes at each of which at least one voltage is acquired in terms of absolute value and phase. The method includes acquiring in each case at least one node voltage at each observation node, where each node voltage has is a node phase angle as phase angle of the node voltage, and each node phase angle describes a respective phase angle with respect to a reference phase angle of a voltage. The method includes ascertaining at least one phase angle relationship that describes a relationship between at least two of the node phase angles distributed over the grid topology, and checking the electricity supply grid for a grid disturbance on the basis of the at least one phase angle relationship.
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公开(公告)号：US20240229766A9
公开(公告)日：2024-07-11
申请号：US18489628
申请日：2023-10-18
发明人： Michael Alletto , Marcus Letzel
CPC分类号： F03D7/0276 , F03D7/0224 , F03D7/049 , F05B2260/84 , F05B2270/204 , F05B2270/32 , F05B2270/321
摘要： A method for operating a wind turbine for generating a settable turbine power, where the wind turbine includes a rotor having rotor blades adjustable in their blade angle, is operable at a settable rotor speed, and is installed at an installation site at a distance to an obstacle, comprises the obstacle causing a wind disturbance, which, in dependence on current wind direction and wind velocity, can reach the wind turbine as a wind wake, and the wind turbine reducing its turbine operation by throttling down for protection against loads due to the wind wake, wherein the throttling down is controlled in dependence on the current wind direction and the current wind velocity, wherein a weather prediction is used in order to take into consideration at least one further weather property in addition to the wind direction and wind velocity, and wherein the throttling down is additionally controlled in dependence on the weather prediction, in particular on the further weather property.
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公开(公告)号：US20240200530A1
公开(公告)日：2024-06-20
申请号：US18544040
申请日：2023-12-18
IPC分类号： F03D1/06
CPC分类号： F03D1/069 , F05B2230/23 , F05B2230/60 , F05B2240/301 , F05B2240/3042 , F05B2250/12 , F05B2260/96
摘要： Some embodiments relate to a rotor blade of a wind turbine, a wind turbine having a rotor blade and a method for optimizing a rotor blade. Some embodiments relate to a rotor blade of a wind turbine, wherein the rotor blade has a leading edge, a trailing edge, a suction side and a pressure side, and extends in a longitudinal direction of a rotor blade between a root end and a tip end, wherein a direct connection between the leading edge and the trailing edge is termed the chord line and the length thereof is termed the chord length, wherein the rotor blade has at least one airfoil element, wherein the at least one airfoil element is arranged at the trailing edge with a proximal portion adjoining a trailing edge region and projects from the trailing edge with a distal portion having a projecting direction, which is oriented substantially parallel to the direction of the chord length, wherein the at least one airfoil element has an airfoil element thickness in a direction perpendicular to the projecting direction, wherein the at least one airfoil element has a pressure side airfoil side facing the pressure side and a suction side airfoil side facing the suction side, wherein the at least one airfoil element has a cross-section substantially orthogonal to the projecting direction, characterized in that the cross-section of the at least one airfoil element has at least one local minimum of the airfoil element thickness, wherein the airfoil element thickness in the cross-section on both sides of the local minimum has a larger value.
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7.发明公开公开(公告)号：US20240200354A1
公开(公告)日：2024-06-20
申请号：US18540637
申请日：2023-12-14
CPC分类号： E04H12/342 , B66C23/207 , B66C23/88 , E04H12/348 , F03D13/201 , F05B2230/61 , F05B2230/70
摘要： A method for erecting and/or dismantling a tower, in particular a tower of a wind power installation, comprises providing a climbing crane, erecting the tower by hoisting and fastening tower segments and/or dismantling the tower by detaching and lowering tower segments, implementing, preferably temporary, securing measures for securing the tower in the state of assembly, in particular in the case of expected wind loads on the tower, which comprises taking into consideration the climbing crane, in particular its weight, in implementing the securing measures.
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公开(公告)号：US20240175423A1
公开(公告)日：2024-05-30
申请号：US18520367
申请日：2023-11-27
IPC分类号： F03D7/02
CPC分类号： F03D7/0276 , F05B2260/821
摘要： Method for controlling a wind power installation (100) which has rotor blades (108) whose blade angle is adjustable and which can be operated at a variable speed using speed control, wherein the speed control is prepared to control the speed to a variable target speed value, comprising the steps of evaluating a test criterion for predicting an emerging overspeed, predicting an overspeed (nU) on the basis of the at least one test criterion, and changing the speed control if an overspeed (nU) has been predicted. Proposed are techniques that avoid an excessive increase in the rotor speed even in the event of strong wind speed increases. In particular, proposed are techniques that avoid reaching an overspeed that leads to shutdown, but without increasing the operating loads too much.
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公开(公告)号：US11994110B2
公开(公告)日：2024-05-28
申请号：US17525568
申请日：2021-11-12
发明人： Johannes Brombach
CPC分类号： F03D7/048 , F03D7/047 , H02J3/46 , H02J2300/28
摘要： Provided is a method for controlling an electrical installation, in particular a wind power installation or a wind farm. The method includes determining a specific location within an electrical supply network to which the electrical installation is electrically connected via the electrical supply network, determining an electrical variable which maps an electrical distance between the electrical installation and the specific location and ascertaining a potential reactive power of the electrical installation for the specific location depending on the electrical variable which maps an electrical distance between the electrical installation and the specific location.
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公开(公告)号：US20240097537A1
公开(公告)日：2024-03-21
申请号：US18257857
申请日：2021-12-17
发明人： Manuel Feith , Wojciech Giengiel , Stephan Jöckel , Alexander Philipp , Sebastian Bauer , Lars Fischer , Wilko Gudewer , Andreas Recktenwald
CPC分类号： H02K15/02 , F03D9/25 , F03D13/40 , H02K7/1838 , H02K21/22 , F05B2220/7068 , F05B2230/60 , F05B2260/02
摘要： The disclosure relates to a generator segment of a segmented generator, in particular of a permanently excited segmented rotary generator, of a wind turbine, comprising a rotor segment of a rotor, and a stator segment of a stator, wherein the rotor segment and the stator segment in an operation position are disposed so as to be mutually spaced apart in a radial direction by an air gap, and are disposed so as to be mutually spaced apart in an axial direction by an axial spacing; wherein the rotor segment and the stator segment are able to be disposed and/or displaced relative to one another along a rotation axis by the axial spacing, between an operation position and a transport position that is different from the operation position.
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