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公开(公告)号：US20220178684A1
公开(公告)日：2022-06-09
申请号：US17441408
申请日：2020-03-13
发明人： John Nieuwenhuizen , Eirik Nagel
摘要： A wind turbine including a tower and a tower deflection detection device is provided. The tower deflection detection device includes a transmitter configured to transmit a first electromagnetic signal; a leaky feeder having a plurality of apertures; a receiver connected to the first leaky feeder and configured to receive a second electromagnetic signal from the first leaky feeder, the second electromagnetic signal is a signal reflected from a reflection portion of the tower, when the first electromagnetic signal impinges the reflection portion of the tower, and entered into the leaky feeder through at least one of the plurality of apertures; and a processing unit connected to the receiver and configured to receive the second electromagnetic signal from the receiver, to analyse the received second electromagnetic signal and to determine a deflection amount of the tower based on the analysed second electromagnetic signal.
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公开(公告)号：US20220186713A1
公开(公告)日：2022-06-16
申请号：US17598921
申请日：2020-03-17
发明人： Eirik Nagel , John Nieuwenhuizen
摘要： A system for detecting rotor blade position and/or rotor blade speed during operation of a wind turbine (1) is provided, the wind turbine (1) including a tower (2) and at least one rotor blade (4). The system comprises a leaky feeder arrangement (10) configured to be mounted at the tower (2) of the wind turbine (1), an RF unit (20) coupled to the leaky feeder arrangement (10) and configured to supply a first radar signal (100) to the leaky feeder arrangement (10) and to receive a second radar signal (200) from the leaky feeder arrangement (10), wherein the second radar signal (200) is reflected from the rotor blade (4) when the first radar signal (100) hits the rotor blade (4), a processing unit (30), and an optical link arrangement (40) interconnecting the processing unit (30) and the RF unit (20). The processing unit (30) is configured to analyse a first signal corresponding to the first radar signal (100) and a second signal corresponding to the second radar signal (200) in order to determine the position and/or the speed of the rotor blade (4). A wind park and a method are also provided.
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公开(公告)号：US20220178785A1
公开(公告)日：2022-06-09
申请号：US17442343
申请日：2020-03-17
发明人： Eirik Nagel , John Nieuwenhuizen
IPC分类号： G01M5/00
摘要： Provided is a measurement and monitoring device including: at least one leaky feeder, at least one electromagnetic transmitter connected to the least one leaky feeder for transmitting a first electromagnetic signal towards a target object, at least one electromagnetic receiver connected to the least one leaky feeder for a second electromagnetic signal reflected from the target object when the first electromagnetic signal hits the target object, a hardware circuit including: a processing unit for determining properties of the target object, a signal processing module receiving as input the first electromagnetic signal and/or the second electromagnetic signal for generating a spectral information in the frequency and/or time domain of the first electromagnetic signal and/or the second electromagnetic signal, a storage unit connected to the processing unit.
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公开(公告)号：US12018649B2
公开(公告)日：2024-06-25
申请号：US17442738
申请日：2020-03-17
发明人： Eirik Nagel , John Nieuwenhuizen
CPC分类号： F03D17/00 , F03D1/0675 , F03D7/047 , F03D80/00 , F05B2260/80 , F05B2270/329 , F05B2270/805 , H01Q13/203 , H04B5/28
摘要： Provided is an apparatus for detecting properties of a rotor blade of a wind turbine, the apparatus including: at least one leaky feeder configured to be arranged around the tower, an electromagnetic transmitter connected to the at least one leaky feeder and configured for transmitting a first electromagnetic signal along the at least one leaky feeder, a reflector for diverting and/or focusing the first electromagnetic signal in a predetermined direction, thereby forming a reflected first electromagnetic signal, an electromagnetic receiver connected to the at least one leaky feeder and configured for receiving a second electromagnetic signal from the at least one leaky feeder, the second electromagnetic signal being reflected from the rotor blade, and a processing unit connected to the electromagnetic transmitter and the electromagnetic receiver and configured to determine the properties of the rotor blade by analysing the first electromagnetic signal and the second electromagnetic signal.
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公开(公告)号：US11988193B2
公开(公告)日：2024-05-21
申请号：US17276940
申请日：2019-08-28
发明人： Eirik Nagel , John Nieuwenhuizen
CPC分类号： F03D17/00 , H01Q13/203 , F05B2270/805
摘要： A wind turbine has an object position and/or speed detection device including: at least one leaky feeder, at least one electromagnetic transmitter connected to the least one leaky feeder for transmitting a first electromagnetic signal along the at least one leaky feeder towards a target object, whose position is to be detected, at least one electromagnetic receiver connected to the least one leaky feeder for receiving from the at least one leaky feeder a second electromagnetic signal, the second electromagnetic signal reflected from the target object when the first electromagnetic signal hits the target object, a processing unit connected to the electromagnetic transmitter and the electromagnetic receiver and configured to analyze the first electromagnetic signal and the second electromagnetic signal for determining the position and/or speed and/or direction and/or the size of the target object.
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6.发明授权公开(公告)号：US11879441B2
公开(公告)日：2024-01-23
申请号：US17289982
申请日：2019-10-15
发明人： Eirik Nagel , John Nieuwenhuizen
CPC分类号： F03D80/82 , F03D13/20 , F03D80/85 , H05K9/0081 , H05K9/0083 , F05B2240/912
摘要： Provided is a wind turbine, including a hollow tower carrying a nacelle, and at least one power electronics component emitting electromagnetic waves during operation, in particular an inverter located at the bottom of the tower, wherein the tower acts as a wave guide for an electromagnetic wave generated by the power electronics component, wherein the tower comprises at least one absorber element at least reducing the transport of the electromagnetic wave of the power electronics component along the tower.
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7.发明申请公开(公告)号：US20220195992A1
公开(公告)日：2022-06-23
申请号：US17598960
申请日：2020-03-16
发明人： Eirik Nagel
摘要： A method of determining a blade clearance during operation of a wind turbine is provided, the blade clearance corresponding to a distance between a rotor blade and a tower of the wind turbine. The method includes (a) detecting a rotor blade velocity, (b) emitting a first signal from an observer location, the first signal having a first frequency, (c) receiving a second signal at the observer location, the second signal being reflected from the rotor blade when the first signal impinges on the rotor blade, (d) determining a Doppler shift of the second signal relative to the first signal, and (e) determining the blade clearance based on the first frequency, the Doppler shift, the observer location, and the rotor blade velocity, wherein the step of determining the blade clearance utilizes a mathematical model. A corre-sponding system and a wind turbine comprising such a system are also provided.
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公开(公告)号：US20220179045A1
公开(公告)日：2022-06-09
申请号：US17598976
申请日：2020-03-17
发明人： Eirik Nagel , John Nieuwenhuizen
摘要： An apparatus including a leaky feeder arrangement including a plurality of parallel leaky feeders, a transmitter coupled to the leaky feeder arrangement and configured to supply individual first radar signals to a group of leaky feeders in the leaky feeder arrangement, the first radar signals being configured to form a first radar signal beam in a predetermined direction relative to the leaky feeder arrangement, a receiver coupled to the leaky feeder arrangement and configured to receive a second radar signal from the leaky feeder arrangement, wherein the second radar signal is reflected from the target object when the first radar signal beam hits the target object, and a processing unit configured to analyse a first signal corresponding to the first radar signals and a second signal corresponding to the second radar signal to determine the properties of the moving object. A wind turbine and a method are also provided.
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公开(公告)号：US20220178350A1
公开(公告)日：2022-06-09
申请号：US17599215
申请日：2020-03-13
发明人： Eirik Nagel , John Nieuwenhuizen
摘要： A wind turbine which is configured to be disposed in or above a sea floor is provided. The wind turbine includes a tower configured to protrude from a sea level and having a transmitter configured to transmit an electromagnetic wave to be reflected on the sea level and a receiver configured to receive the reflected electromagnetic wave, wherein at least one of the transmitter and the receiver includes a leaky feeder; and a processing unit being in communication with the receiver and configured to analyse the reflected electromagnetic wave such that a wave characteristic of the sea level is determined.
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公开(公告)号：US20220154701A1
公开(公告)日：2022-05-19
申请号：US17442643
申请日：2020-03-16
发明人： Eirik Nagel , John Nieuwenhuizen
摘要： A wind turbine including a tower, a nacelle and at least one rotatable blade and at least one sensor including energy harvester and a sensing element for measuring a physical variable is provided. The energy harvester includes: a receiving antenna for receiving an electromagnetic signal, an electrical storage for storing electrical energy and electrically connected to the sensing element, a rectifier electrically connected between the antenna and the storage.
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