A method (200) for controlling a wind turbine (100) with a rotor having at least one rotor blade (17), the method comprising: measuring (210) a strain of the at least one rotor blade; changing (220) a pitch angle of the at least one rotor blade based at least partially on the measured strain of the at least one rotor blade; whereby the measurement of the strain of the at least one rotor blade measures at least one strain in the area of a blade root of the rotor blade (17).
The invention relates to a fibre-optic accelerometer for determining acceleration along an axis, comprising an optical fibre with a fibre end face and an acoustic membrane with a membrane frame, a deflection mass and connection bridges, the acoustic membrane being designed to reflect, at least in part, a primary radiation from the fibre end face, and the connection bridges connecting the membrane frame and the deflection mass at least at two different axial positions.
G01P 15/093 - Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values by photoelectric pick-up
F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
G01P 15/18 - Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
G01P 15/08 - Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values
3.
OVERLOAD PROTECTION ON WIND POWER PLANTS USING STRAIN SENSORS
The invention relates to a method (200) for controlling a wind power plant (100) having a rotor with at least one rotor blade (17), the method comprising: measuring (210) a strain of the at least one rotor blade; changing (220) a pitch angle of the at least one rotor blade at least partially on the basis of the measured strain of the at least one rotor blade; the measuring of the strain of the at least one rotor blade measuring at least a strain in the region of the root of the rotor blade (17).
The invention relates to a method for monitoring a wind turbine (10). The method comprises: collecting data associated with abnormal behaviour of the wind turbine; comparing the collected data with anonymised data from other wind turbines; using the comparison to associate a fault condition with the abnormal behaviour; and outputting the fault condition to the wind turbine.
The invention relates to a fibre-optic accelerometer for determining acceleration along an axis, comprising an optical fibre with a fibre end face and an acoustic membrane with a membrane frame, a deflection mass and connection bridges, the acoustic membrane being designed to reflect, at least in part, a primary radiation from the fibre end face, and the connection bridges connecting the membrane frame and the deflection mass at least at two different axial positions.
G01P 15/093 - Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values by photoelectric pick-up
6.
METHOD FOR MONITORING THE STATE OF THE POWERTRAIN OR TOWER OF A WIND TURBINE, AND WIND TURBINE
Embodiments according to the invention describe a method for monitoring the state of the powertrain or tower of a wind turbine (10), said method having the steps of: detecting data of a state monitoring system which is provided for a structure of the wind turbine (10), said structure being mechanically coupled to the powertrain or tower; processing the detected data of the state monitoring system which is provided for the structure of the wind turbine (10), said structure being mechanically coupled to the powertrain or tower; and determining the state of the powertrain or tower from the processed data of the state monitoring system which is provided for the structure of the wind turbine (10), said structure being mechanically coupled to the powertrain or tower.
A method for determining a remaining service life of a wind turbine (10) is disclosed. The method comprises: acquiring loading data by way of at least one load sensor (11, 12, 13, 14, 15) arranged on the wind turbine (10); creating a temporal profile from the acquired loading data; estimating fatigue loading from the temporal profile of the acquired loading data using a data processing device (16); assigning the estimated fatigue loading to operating conditions and/or a status of the wind turbine (10); and determining the remaining service life from the estimated fatigue loading, the assignment thereof to operating conditions and/or the status of the wind turbine (10) and an expected value for the remaining service life.
The invention relates to a method for determining at least one operating parameter of a wind turbine. The determination method comprises creating a digital image of the wind turbine with respect to the at least one operating parameter and detecting at least one structural sensor signal reflecting a structural behaviour of the wind turbine. The at least one operating parameter of the wind turbine is determined in accordance with the structural sensor signal and the digital image, by means of a turbine model provided with respect to the wind turbine.
The invention relates to a method (300) for controlling a wind farm (10). The method (300) has the steps of: reading data from at least one first wind turbine (200) of the wind farm; supplying the read data of the at least one first wind turbine to a statistical prediction model for controlling at least one second wind turbine (200) of the wind farm on the basis of the read data of the at least one first wind turbine; and using the statistical prediction model in order to control the at least one second wind turbine (200).
The invention relates to an assembly of sensors on a rotor blade and to a method for determining wind flows on one or more rotor blades of a wind turbine. The assembly consists of at least two strain sensors which detect blade bending moments of at least one rotor blade of a wind turbine in at least two different spatial directions. The assembly also comprises a first acceleration sensor for detecting accelerations of the rotor blade in a first spatial direction and at least one second acceleration sensor for detecting accelerations of the rotor blade in a second spatial direction that is different from the first spatial direction. An evaluation device is also comprised which is designed to read in analogue or digital signals of the tension measuring sensors and the acceleration sensors via inputs of the evaluation device, to evaluate the signals, and to provide an evaluation result regarding wake turbulence or wind shear hitting the rotor blade.
WIND TURBINE, SENSOR KIT FOR A WIND TURBINE, SYSTEM COMPRISING A WIND TURBINE AND AN ONLINE-BASED MEMORY AND SERVER SERVICE, AND METHOD FOR TRANSMITTING DATA FROM A WIND TURBINE TO AN ONLINE-BASED MEMORY AND SERVER SERVICE
The invention relates to a wind turbine (10) comprising a sensor (11, 12, 13, 14, 15) for detecting data, a data processing device (16) for processing the detected data, and a network interface (18) for connecting the data processing device to a data network, wherein the network interface is designed to transmit data processed by the data processing device to an online-based memory and server service and/or to receive data from the online-based memory and server service (20).
The present document describes a method for controlling a wind turbine. The method involves measuring noise emission by means of at least one pressure sensor attached to the rotor blade; recognising a characteristic aeroacoustic sound for at least one flow detachment on the basis of the noise emission; and controlling, in open- or closed-loop fashion, one or more components of the wind turbine on the basis of the recognition of the characteristic aeroacoustic sound of the flow detachment.
A measurement device and a method for measuring wind flows on one or more rotor blades of a wind turbine are disclosed. It contains at least two pressure sensors that are designed to measure a fluid pressure, preferably an air pressure, at points of a rotor blade surface, wherein the sensors are installed along a rotor blade surface. It additionally includes an evaluation device in order to evaluate the signals from the at least two pressure sensors.
G01P 5/14 - Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
14.
WIND TURBINE CONTROL BASED ON NOISE EMISSION MEASUREMENT USING PRESSURE SENSORS ON ROTOR BLADES
The invention relates to a measuring device and to a method for determining sound emissions of one of several rotor blades of a wind turbine, comprising at least one sensor which is designed to detect vibrations on one or more rotor blades and to provide a result as a signal; wherein the at least one sensor is mounted flush with the surface of the rotor blades.
The invention relates to a sensor arrangement (200) for use on a wind turbine (100). The sensor arrangement (200) comprises a rotor blade-related sensor (202, 204, 206, 208, 210), which is arranged in/on a rotor blade, and a non-rotor blade-related sensor (212, 214, 216), wherein the sensor signals, which are associated with the rotor blade-related sensor, are processed by fusion with the sensor signals which are associated with the non-rotor blade-related sensor. The invention also relates to a method (400) for operating a wind turbine (100).
Embodiments describe a method for fastening a module to a surface of a region of a wind turbine using an adhesive, comprising: placing adhesive on the surface to which the module is to be fastened or on a surface of the module; placing the module on the surface to which the module is to be fastened so that the adhesive forms an adhesive join between said surface of the module and the surface to which the module is to be fastened; and activating and curing the adhesive in the adhesive join by applying energy to the adhesive.
C09J 5/06 - Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
C09J 7/10 - Adhesives in the form of films or foils without carriers
The invention relates to a temperature sensor (100). The temperature sensor (100) comprises an optical waveguide (10) made of an optical waveguide material with at least one integrated temperature sensor element (11); a sleeve (20) which is radially spaced from the optical waveguide (10), surrounds the temperature sensor element (11) of the optical waveguide (10), and is made of a non-metal sleeve material; and a capillary (30) which is radially spaced from the sleeve (20), surrounds at least some regions of the sleeve (20), and is made of a non-metal capillary material. The optical waveguide (10) is fixed to the sleeve (20) at an inlet end (E3) of the sleeve (20) and at an outlet end (E4) of the sleeve (20), and the optical waveguide (10) is fixed to the capillary (30) at an inlet end (El) of the capillary (30). The sleeve material has a thermal expansion coefficient which is greater than the thermal expansion coefficient of the optical waveguide material.
G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
The invention relates to a method by means of which a system that is capable of oscillating can be monitored. The method comprises detection of natural oscillation modes of the system that can oscillate as a function of at least one operating parameter and/or as a function of at least one environmental parameter of the system that is capable of oscillating, creation of a frequency distribution of the detected natural oscillating modes, division of the natural oscillating modes into frequency classes and, in at least one frequency class, determination of a mode profile over the operating parameter and/or over the environmental parameter.
The invention relates to a device for fibre-optic measuring. The device includes a sensor having at least one fibre-optic sensor element, an evaluation unit, wherein the sensor is dedicated to the evaluation unit, wherein the device is configured to emit optionally a raw signal of the sensor or an adjusted signal of the sensor, and wherein the adjusted signal of the sensor is obtained, whereby at least one calibration variable is used on a signal detected by the sensor. The invention also relates to a method for calibrating the device and a method for fibre-optic measuring using the device.
G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
G01D 18/00 - Testing or calibrating apparatus or arrangements provided for in groups
G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
G01K 15/00 - Testing or calibrating of thermometers
20.
MONITORING METHOD FOR A WIND TURBINE, ASSOCIATED MONITORING DEVICE, AND WIND TURBINE HAVING A MONITORING DEVICE
The invention relates to a monitoring method for a wind turbine and to an associated monitoring device for carrying out the method. The monitoring method comprises: determining a measurement series of the efficiency of the wind turbine from the rotor power and the generator power of the wind turbine in each of at least one specified measurement time period; determining, for each specified measurement time period, a difference between an efficiency expected for the specified measurement time period and the determined efficiency of the wind turbine; and determining, individually from each difference, an operating state of the wind turbine, in particular an operating state of the drive train of the wind turbine.
The invention relates to a method for creating a prediction model for ice build-up on wind turbines. The method comprises: detecting ice build-up data at at least one wind turbine; using meteorological data for the location of the at least one wind turbine; feeding in the ice build-up data of the at least one wind turbine and the meteorological data in a machine learning method; and creating a prediction model based on the machine learning method. The invention also relates to a method for predicting ice build-up on wind turbines. The method comprises: detecting ice build-up data at at least one wind turbine; using meteorological data for the location of the at least one wind turbine; and predicting an ice build-up based on a machine-learned model.
The invention relates to an optoelectronic chip (1) comprising the following elements: a light inlet (11); a wavelength-sensitive optical filter (20); a first photoelectric element (30) for measuring a first light intensity, particularly a first photodiode, the first photoelectric element (30) being arranged such that light (50) penetrating the optoelectronic chip (1) via the light inlet (11), transmittted by the filter, hits the first photoelectric element (30); and a second photoelectric element (40) for measuring a second light intensity, particularly a second photodiode, the second photoelectric element (40) being arranged such that the light (50) penetrating the optoelectronic chip via the light inlet, which is reflected by the filter (20), hits the second photoelectric element (40).
The invention relates to a securing method, comprising the following steps: providing (1001) an optical waveguide (10) made of a material with a first melting temperature, wherein a sensor region (11) of the optical waveguide has at least one integrated temperature sensor element (12); providing (1002) a capillary (20) made of a material with a second melting temperature, in such a way that the capillary (20) surrounds at least regions of the sensor region (11) of the optical waveguide (10), and that a securing region (21) of the capillary is arranged at a distance from the sensor region (11), wherein the second melting temperature is lower than the first melting temperature, wherein the temperature sensor element (12) is arranged in an end region (13) of the optical waveguide, and the end region is inserted into the capillary (20); securing (1003) the securing region of the capillary (20) to the optical waveguide (10), involving a heating of the securing region of the capillary (20) to a heating temperature that is equal to or higher than the second melting temperature; and heating (1004) the free end (23) of the capillary (20) to a heating temperature that is equal to or higher than the second melting temperature. A temperature sensor comprising an optical waveguide (10) with at least one integrated temperature sensor element (12) can be obtained with the method. A securing device (50) comprises an insertion region (51) for the capillary (20), a detector (52) and a heating region (53). The securing device can be used for carrying out the method.
G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
24.
METHOD FOR INCREASING THE YIELD OF A WIND FARM UNDER ICING CONDITIONS
The invention relates to a method for monitoring a wind farm. The method includes determining a first ice mass on a first wind turbine of the wind farm; determining at least one second ice mass on at least one second wind turbine of the wind farm; comparing a first ice mass with a second ice mass and determining a primary wind turbine, which serves as a reference, and at least one secondary wind turbine from the group of the first wind turbine and the at least one second wind turbine; switching off the at least one secondary wind turbine on the basis of a first ice mass from the primary wind turbine; and switching on the at least one secondary wind turbine on the basis of a second ice mass from the primary wind turbine.
The invention relates to an assembly for monitoring and/or controlling a wind turbine. The assembly for monitoring and/or controlling a wind turbine comprises: an arrangement of two strain sensors, in particular three strain sensors, which detects blade bending moments of a rotor blade of a wind turbine in at least two different spatial directions; a first fibre optic vibration sensor for detecting vibrations of the rotor blade in a first spatial direction; and at least one second fibre optic vibration sensor for detecting vibrations of the rotor in a second spatial direction, which differs from the first spatial direction.
The invention relates to an assembly for monitoring and/or controlling a wind turbine. The assembly includes a first strain sensor for measuring a first blade bending moment of a rotor blade of a wind turbine in a first spatial direction; a second strain sensor for measuring a second blade bending moment of a rotor blade of a wind turbine in a second spatial direction, which differs from the first spatial direction; an arrangement for determining constant components of forces and moments of the rotor blades provided in the wind turbine; and a controller for combining the first blade bending moment, the second blade bending moment and the constant components.
The invention relates to an acoustic emission sensor (100). The acoustic emission sensor comprises an optical resonator (10) having a sensor region (11) configured for reflective operation; an optical waveguide (20) which is optically coupled to the optical resonator (10); a light source (31) which is optically coupled to the optical waveguide (20) to apply light to the optical waveguide (20); and a detection device (32) which is optically coupled to the optical waveguide (20) to detect light from the optical resonator (10). The sensor region (11) of the optical resonator (10) comprises a coupling device (50) for mechanically coupling to a solid measurement object (200). The coupling device (50) comprises a first coupling element (51) for transmitting an acoustic emission signal between the sensor region (11) and the solid measurement object (200), and at least one second coupling element (52). The second coupling element (52) is configured to position the coupling device (50) on the solid measurement object (200), and/or the second coupling element (52) acts as a filter for the acoustic emission signal.
The invention discloses an apparatus for measuring the torsion between a first point (41) and a second point (42) of a test object (1), said second point being spaced apart from the first point. The apparatus comprises the following: a source of polarized light, comprising a polarizing light source (15) that emits polarized light, or a polarizer (20) that is connected to a light source (10) by way of an optical feed; a first optical fibre (40) that is optically connected to the output of the polarizing light source (15) or to the output of the polarizer (20) and that is fastened to the test object (1) at the first point (41) and at the second point (42) in such a way that a torsion of the test object about a torsion axis causes a change in the angle of rotation of the first optical fibre from the first point in relation to the second point, and a second polarization-maintaining optical fibre (50), that is connected to the first optical fibre (40) at the second point (42) or downstream of the second point (42) in relation to the light path coming from the source, for supplying the light to a measuring device (30, 31), wherein the distance between the first point (41) and the second point (42) of the test object (1) is greater than or equal to 5 metres, or greater than or equal to 7 metres, or greater than or equal to 10 metres, and the first optical fibre (40) comprises a non-polarization-maintaining, bending-insensitive fibre.
G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
G01B 11/26 - Measuring arrangements characterised by the use of optical techniques for testing the alignment of axes
G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
The invention relates to a device for detecting acceleration. The device contains: a frame; a mass; a lever arm connected to the mass, wherein the mass is provided at a first lever position; an optical fiber having a fiber-optic sensor; and a compensation element for disturbance variables, wherein the compensation element for disturbance variables is connected to the lever arm or the mass and wherein the compensation element for disturbance variables is connected to the frame.
G01P 15/093 - Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values by photoelectric pick-up
G01P 1/00 - MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT; INDICATING DIRECTION OF MOVEMENT - Details of instruments
G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
G01P 15/18 - Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
G01P 15/08 - Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values
30.
METHOD AND DEVICE FOR IDENTIFYING A FIBER IN A BUNDLE OF OPTICAL WAVEGUIDE FIBERS, AND CORRESPONDING USE
The invention relates to a method and a device for identifying a fiber in a bundle of optical waveguide fibers and to the use of the method. The method has the steps of ascertaining at least one reflection property or at least one scattering property at an accessible end (11, 12, 13) of the fiber; and comparing the ascertained at least one reflection property or the ascertained at least one scattering property with a typically unique reflection property which characterizes the fiber (1, 2, 3) or with a typically unique scattering property which characterizes the fiber (1, 2, 3). The device comprises a unit (210) for supplying a test light to an end of the fiber (1, 2, 3) and for ascertaining at least one reflection property or at least one scattering property at an accessible end of the fiber (1, 2, 3) and a unit (220) for comparing the ascertained at least one reflection property with a typically unique reflection property which characterizes the fiber or with a typically unique scattering property which characterizes the fiber (1, 2, 3).
G01M 11/00 - Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
H04B 10/071 - Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
31.
DEVICE AND METHOD FOR RECOGNISING THE ATTACHMENT OF ICE TO A STRUCTURE OF A CONSTRUCTION
Embodiments of the present disclosure relate to a device and a method for recognising the attachment of ice to a structure (110) of a construction (100). The device comprises at least one acceleration sensor (10) that is arranged and configured to detect an acceleration on the structure; an evaluation device (30) for determining at least one natural frequency of the structure (110) from the detected acceleration, wherein the evaluation device (30) is configured to indirectly detect attachment of ice to said structure (110) on the basis of the determined natural frequency of the structure (110); and at least one ice detection sensor (20, 20a, 20b) that is arranged and configured to directly detect attachment of ice at a position on said structure (110), wherein the evaluation device (30) combines the indirect detection of the attachment of ice and the direct detection of the attachment of ice.
09 - Scientific and electric apparatus and instruments
35 - Advertising and business services
38 - Telecommunications services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Optical fibre sensors; software for sensor data fusion;
algorithms for sensor data fusion; instruments for surveying
physical data; supervision apparatus and instruments;
measuring, detecting and monitoring instruments, indicators
and controllers; measuring, counting, alignment and
calibrating instruments; physical analyzing apparatus other
than for medical use; apparatus and instruments for physics;
precision measuring apparatus; sensors used in plant
control; sensors for motor control; sensors for measuring
instruments; sensors and detectors; monitoring instruments;
computer programs for data processing; sensor controllers;
sensory software; wind measurement apparatus; vibration
sensors for installation in windmill housings; programmable
logic controllers; downloadable computer software for remote
monitoring and analysis; computer software for the purposes
of machine learning and for the purposes of artificial
intelligence; computer application software for use in
implementing the Internet of Things; computer hardware
modules for use in electronic devices for the Internet of
Things; programmable controllers; electronic control
systems; wireless controllers to remotely monitor and
control the function and status of other electrical,
electronic, and mechanical devices or systems. Data processing for the collection of data for business
purposes; advertising, marketing and promotional services;
computerised data verification. Data transmission; digital transmission of data; electronic
instructions transmission services; communication services
for the electronic transmission of information; optical
fibre telecommunications services; transmission of
information by data communications for assisting decision
making. Computer aided industrial testing; technical measuring and
testing; development and testing of computing methods,
algorithms and software; development of measuring and
testing methods; development of software for digital signal
processing; software development, programming and
implementation; design and development of computer software
for evaluation and calculation of data; design and
development of testing and analysis methods; design and
development of computer software for controlling, regulating
and monitoring of wind power stations; research in
measurement technology; research and development services in
connection with physics; engineering research; process
monitoring for quality assurance; quality control testing
services for industrial machinery; testing the functionality
of apparatus and instruments; testing, authentication and
quality control; technical inspection services; technical
supervision and inspection; design and development of
software for functional safety; design and development of
software for diagnostic functionality; scientific research
in the field of development methodology; research and
development in the field of functional safety; engineering
services in the field of functional safety; science and
technology services; engineering services relating to data
processing; research in the field of data processing
technology; computer aided industrial analysis services
analysis and, testing services relating to electrical
engineering apparatus; programming of electronic control
systems; creation of control programs for electric operation
control and drive modules.
33.
METHOD AND DEVICE FOR THE FUNCTIONAL TESTING OF A FIBRE-OPTIC SENSOR AND COMPUTER PROGRAM PRODUCT
The invention relates to a method (200) for the functional testing of a fibre-optic sensor (110). The method (200) comprises receiving (220) optical sensor signals of the fibre-optic sensor (110) in an evaluation unit (124), determining (230) a first variable from the optical sensor signals, determining (240) whether the first variable lies within a pre-determined range, determining (250) a malfunction of the fibre-optic sensor (110) if the first variable lies outside the pre-determined range, and determining (260) a second variable from the optical sensor signals, which is different from the first variable, if it is determined that the first variable lies within the pre-determined range, the second variable declaring a parameter that is to be determined by the fibre-optic sensor (110).
G01D 18/00 - Testing or calibrating apparatus or arrangements provided for in groups
G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
G01P 15/093 - Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values by photoelectric pick-up
G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
34.
METHOD AND DEVICE FOR DETERMINING LOADS ON A WIND TURBINE TOWER
The invention relates to a method (100) for determining loads on a wind turbine tower. In a first step (110) of the method (100), bending moments in at least one rotor blade of the wind turbine are determined in order to provide a first variable, which identifies a first force acting on a nacelle of the wind turbine tower. In addition, in a second step (120) of the method (100), a nacelle deflection is determined order to provide a second variable which identifies a second force acting on the nacelle of the wind turbine tower. Furthermore, a third step (130) of the method (100) comprises entering the first variable and the second variable into a calculation model, which displays the behavior of the tower. A fourth step (140) of the method (100) comprises a determination of loads on the tower of the wind turbine by means of the calculation model.
The invention relates to a method (200) for monitoring a status of at least one wind turbine. The method (200) comprises: detecting first measurement signals via one or more sensors (210), wherein the first measurement signals provide one or more parameters relating to at least one rotor blade of the at least one wind turbine in a normal status; training a trainable algorithm based on the first measurement signals of the normal status (220); detecting second measurement signals via the one or more sensors (230); and recognising an undetermined anomaly via the trainable algorithm trained in the normal status, if a current status of the wind turbine, determined based on the second measurement signals, deviates from the normal status (240).
The invention relates to a device comprising an optical waveguide (131) having an end (134), a membrane (111) having a membrane surface (112), and an optical resonator (120), which is formed between the membrane surface (112) and a substrate surface (141). The device also comprises a deflecting unit (135), which is designed to deflect, toward the resonator (120), primary radiation (138) exiting from the end (134). The device also comprises a magnet (150), which is arranged on the membrane (111).
09 - Scientific and electric apparatus and instruments
35 - Advertising and business services
38 - Telecommunications services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Optical fibre sensors; software for sensor data fusion; integrated circuits containing algorithms for sensor data fusion; instruments for surveying physical data in the nature of electrical energy; supervision apparatus and instruments, namely, turbine and rotor monitor modules; measuring, detecting and monitoring instruments, indicators and controllers, namely, speed indicators, noise indicators, surface texture indicators; measuring, counting, alignment and calibrating instruments, namely, measuring devices for surface texture, noise, temperature, pressure, torsion and wind; precision measuring apparatus for surface texture, noise, temperature, pressure, torsion and wind; sensors used in plant control for measuring wind speed, noise, temperature, pressure, torsion, surface texture and the generation, distribution and storage of electrical energy; sensors for motor control of turbines for wind speed, noise, temperature, pressure, torsion and surface texture; sensors for measuring instruments for wind speed, noise, temperature, pressure, torsion and surface texture; sensors and detectors for wind speed, noise, temperature, pressure, torsion and surface texture; monitoring instruments for measuring wind speed, noise, temperature, pressure, torsion, surface texture and the generation, distribution and storage of electrical energy; computer programs for data processing; electronic controllers for operating sensors; sensory software for measuring and monitoring wind speed, noise, temperature, pressure, torsion, surface texture and generation, distribution and storage of electrical energy; wind measurement apparatus; vibration sensors for installation in windmill housings; programmable logic controllers; downloadable computer software for remote monitoring and analysis of wind speed, noise, temperature, pressure, torsion and surface texture; computer software for the purposes of machine learning and for the purposes of artificial intelligence; computer application software for use in implementing the Internet of Things; computer hardware modules for use in electronic devices for the Internet of Things; programmable electronic controllers for the generation, distribution and storage of electrical energy; electronic control systems for machines; wireless controllers to remotely monitor and control the function and status of other electrical, electronic, and mechanical devices or systems; all of the aforesaid products exclusively in relation to the energy sector including wind turbines and grid equipment, dams, industrial drives and transport infrastructure sector including bridges, tunnels, dikes and locks, roads, power supplies Data processing for the collection of data for business purposes; advertising, marketing and promotional services; computerised data verification, namely, updating and maintenance of data in computer databases Electronic data transmission; digital transmission of data; electronic instructions transmission services; communication services for the electronic transmission of information; optical fibre telecommunications services, namely, providing fiber optic network services; transmission of information by data communications for assisting decision making Computer aided industrial testing of wind speed, power, torsion and pressure; technical measuring and testing of wind speed, power, torsion and pressure; development and testing of computing methods, algorithms and software; development of measuring and testing methods in the field of wind energy and fiber optics; development of software for digital signal processing; software development, programming and implementation; design and development of computer software for evaluation and calculation of data; design and development of testing and analysis methods in the field of wind energy and fiber optics; design and development of computer software for controlling, regulating and monitoring of wind power stations; research in measurement technology; research and development services in connection with physics; engineering research; process monitoring for quality assurance in the field of wind energy and fiber optics; quality control testing services for industrial machinery; testing the functionality of apparatus and instruments; testing and authentication in the field of wind energy and fiber optics and quality control; technical inspection services, namely, environmental testing and inspection services; technology supervision and inspection in the field of fiber optics, wind energay and wind turbines; design and development of software for functional safety; design and development of software for diagnostic functionality; scientific research in the field of development methodology; research and development in the field of functional safety; engineering services in the field of functional safety; science and technology services, namely, scientific research and computer programming; engineering services relating to data processing; research in the field of data processing technology; computer aided industrial analysis and testing services relating to electrical engineering apparatus; programming of electronic control systems; creation of control programs for electric operation control and drive modules
38.
METHOD FOR PREDICTING THE ACCUMULATION OF ICE ON A ROTOR BLADE OF A WIND TURBINE AND THE USE THEREOF
Embodiments describe a method for predicting the accumulation of ice on a rotor blade (111, 112) of a wind turbine (100) and the use thereof. The method comprises defining an upper threshold value (So) and/or a lower threshold value (Su) for a system variable (S) which is associated with the mass of the rotor blade (111, 112) and/or with the mass of an ice attachment (1) of the rotor blade (111, 112); acquiring system variable data during an acquisition time period (T); carrying out a compensation calculation of the curve profile for a prediction time period ( ∆t1', ∆t2', ∆t3') from the system variable data which were acquired during a partial time period ( ∆t1, ∆t2, ∆t3) of the acquisition time period (T) in order to obtain a prediction curve (N1, N2, N3); carrying out at least one further compensation calculation of the curve profile for a further prediction time period (∆t1', ∆t2', ∆t3') from the system variable data which were acquired during another partial time period (∆t1, ∆t2, ∆t3) of the acquisition time period (T) in order to obtain a further prediction curve (N1, N2, N3); determining whether or not the upper threshold value (So) will be exceeded by one or more of the prediction curves (N1, N2, N3) in future and/or whether the lower threshold value (Su) will not be undershot by one or more of the prediction curves (N1, N2, N3) in the future; and outputting the result of the determination.; and outputting the result of the determination.
Embodiments of the invention describe a method for ascertaining a value of an ice buildup quantity on at least one rotor blade (111, 112) of a wind turbine (100) and to the use thereof. The method has the steps of ascertaining a base value (G) for at least one natural frequency of the rotor blade when vibrations are excited in an ice buildup-free state; ascertaining a shift base factor for shifting the at least one natural frequency relative to the ice buildup-free state in the event of an ice buildup quantity which is increased by a specific value; detecting a measurement value or a measurement value curve of a measurement variable which is suitable for determining the current natural frequency of the rotor blade (111, 112); determining the current natural frequencies of the rotor blade (111, 112); and deriving a current shift factor by comparing the current natural frequencies with the base value (G), comparing the current shift factor with the shift base factor, and deriving a value for the ice buildup quantity using the comparison.
The invention relates to a method for operating a wind turbine. The method comprises measuring a torsion between a first point (10) of a rotor blade (100) of a wind turbine and a second point (12) spaced apart from the first point, and determining at least one parameter, in particular an actual value of the at least one parameter, of the wind turbine based on the measured torsion, wherein the at least one parameter is selected from the group comprising an angle of attack of the rotor blade (100), a pitch angle, a wind speed, an angle of incidence, and a flow speed.
09 - Scientific and electric apparatus and instruments
35 - Advertising and business services
38 - Telecommunications services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Load indicators; stress gauges; optical fibre sensors;
instruments for surveying physical data; checking
(supervision) apparatus and instruments; measuring,
detecting and monitoring instruments, indicators and
controllers; measuring, counting, alignment and calibrating
instruments; measuring sensors; physical analysing apparatus
[other than for medical use]; apparatus and instruments for
physics; precision measuring apparatus; rotation measuring
sensors; sensors used in plant control; sensors for
measuring instruments; sensors and detectors; monitoring
instruments. Data processing for the collection of data for business
purposes; advertising, marketing and promotional services. Data transmission; digital transmission of data; electronic
instructions transmission services; electronic transmission
of information (services for the -); optical fibre
telecommunications services. Computer aided industrial testing; technical measuring and
testing; development and testing of computing methods,
algorithms and software; development of measuring and
testing methods; development of software for digital signal
processing; software development, programming and
implementation; design and development of computer software
for evaluation and calculation of data; design and
development of testing and analysis methods; design and
development of software for control, regulation and
monitoring of wind energy systems; research in measurement
technology; research and development services in connection
with physics; engineering research; process monitoring for
quality assurance; quality control testing services for
industrial machinery; testing the functionality of apparatus
and instruments; testing, authentication and quality
control; technical inspection services; technical
supervision and inspection; scientific research and
development; scientific and technological services.
09 - Scientific and electric apparatus and instruments
35 - Advertising and business services
38 - Telecommunications services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Electronic load indicators; electronic stress gauges; optical fiber sensors; instruments for surveying physical data; measuring, detecting and monitoring instruments, namely, highly dynamic instruments for measuring bending, oscillation, acceleration, strain, temperature, force and pressure variables for rotor blades in wind turbines, electronic indicators and controllers for measuring bending and oscillation behavior of rotor blades in wind turbines; measuring, counting, alignment and calibrating instruments for measuring bending and oscillation behavior of rotor blades in wind turbines; measuring sensors for measuring bending, oscillation, acceleration, strain, temperature, force and pressure variables for rotor blades in wind turbines; precision measuring apparatus, namely, highly dynamic instruments for measuring bending, oscillation, acceleration, strain, temperature, force and pressure variables for rotor blades in wind turbines; rotation measuring sensors, namely, optical fiber sensors for measuring rotation of rotor blades in wind turbines; sensors used in plant control; sensors for measuring instruments, namely, optical fiber sensors for measuring rotation of rotor blades in wind turbines; sensors and detectors, namely, optical fiber sensors for measuring rotation of rotor blades in wind turbines Data processing for the collection of data for business purposes; advertising, marketing and promotional services Electronic data transmission; digital transmission of data; electronic instructions transmission services; electronic transmission of information Computer aided industrial testing in the field of fiber optic, sensor technology, wind turbines; technical measuring and testing of bending, oscillation, acceleration, strain, temperature, force and pressure variables in the field of wind turbines; development and testing of computing methods, algorithms and software; development of measuring and testing methods in the field of fiber optic, sensor technology, wind turbines; development of software for digital signal processing; software development, programming and implementation; design and development of computer software for evaluation and calculation of data; design and development of testing and analysis methods in the field of fiber optic, sensor technology, wind turbines; design and development of software for control, regulation and monitoring of wind energy systems; research in measurement technology; research and development services in connection with physics; engineering research; process monitoring for quality assurance in the field of fiber optic, sensor technology, wind turbines; quality control testing services for industrial machinery; testing the functionality of apparatus and instruments; testing, authentication and quality control in the field of wind energy; technical inspection services of rotor blades in the field of wind energy; technical supervision and inspection of rotor blades, wind turbines in the field of wind energy; scientific research and development; scientific and technological services, namely, scientific research, analysis and testing, in the field of fiber optic, sensor technology, wind turbines
Disclosed is a fibre-optic pressure sensor (110) having an optical waveguide (112) with one end, an optical deflection unit (301) that is connected to the optical waveguide (112) and a sensor body (300), on which an optical resonator (302) is formed by means of a sensor membrane (303). The optical waveguide (112) and/or the deflection unit (301) are attached to the sensor body (300) by means of a curable adhesive or a solder connection.
G01L 9/00 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
G01L 19/00 - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE - Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
44.
SENSOR PATCH, AND METHOD FOR PRODUCING A SENSOR PATCH
The invention relates to a sensor patch (110) comprising a light guide (112) having a sensor element (111). The sensor patch (110) further comprises a carrier structure having a first fastening element (301) for fastening the light guide (112) at a first position (401), and a second fastening element (302) that is spaced apart from the first fastening element (301) for fastening the light guide (112) at a second position (402), wherein the sensor element (111) is arranged between the first position (401) and the second position (402). Said sensor patch further comprises an intermediate carrier (500) having a first surface (503), on which the first and second fastening elements (301, 302) are mounted at respective fastening positions (501, 502), and an opposite second surface (504) that can be mounted on a measuring object, and a covering element (303) arranged on the intermediate carrier (500) and connected thereto. Together with the intermediate carrier (500), the covering element (303) forms a cross-sectional dimension that is oriented approximately perpendicular to a longitudinal extension of the light guide (112) oriented in such a way that the light guide (112) extends in the neutral fiber (900) of the sensor patch (110).
G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
45.
LIGHT GUIDE CLAMPING DEVICE, FIBRE OPTIC SENSOR AND PRODUCTION METHOD
The invention relates to a clamping device (300) for a light guide (112). The clamping device (300) contains a carrier structure having a first securing element (301) for securing the light guide (112) in a first position (401), and a second securing element (302) at a distance from the first securing element (301) for securing the light guide (112) in a second position (402), wherein the first and second positions (401, 402) have a first distance (403) in a longitudinal extension of the light guide (112). An intermediate carrier (500) is also provided having a first surface (503) on which the first and second securing elements (301, 302) are attached in respective securing positions (501, 502), and having an opposing second surface (504), which can be applied to a measurement object. In addition, a second distance (505) of the securing positions (501, 502) of the securing elements (301, 302) on the intermediate carrier (500) is greater than the first distance (403) in a longitudinal direction of the light guide (112).
G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
46.
METHOD FOR DETECTING A TORSION INSTABILITY OF A ROTOR BLADE OF A WIND POWER PLANT AND PROFILE FOR A ROTOR BLADE
The invention relates to a method for detecting a torsion instability of a rotor blade of a wind power plant. The method comprises the measurement of an acceleration with a fiber-optic acceleration sensor, the acceleration sensor being provided at a radial position in the region of the outer 70 % of the radius of the rotor blade, and the evaluation of the acceleration for generating a signal for detecting a torsion instability, in particular flutter, and/or a signal for detecting a torsional/bending coupling.
G01P 15/093 - Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values by photoelectric pick-up
F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
47.
METHOD FOR MONITORING A WIND TURBINE, METHOD FOR IDENTIFYING ICE ON A WIND TURBINE, ACCELERATION SENSOR FOR A ROTOR BLADE, ROTOR BLADE COMPRISING AN ACCELERATION SENSOR, AND PROFILE FOR A ROTOR BLADE
Disclosed is a method for monitoring a wind turbine. The method comprises: the measurement of an acceleration by means of a fibre-optic acceleration sensor in a rotor blade of the wind turbine; an opto-electronic conversion of an acceleration signal of the fibre-optic acceleration sensor; and the filtering of the opto-electronically converted acceleration signal by means of an analogue anti-aliasing filter.
G01P 15/093 - Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values by photoelectric pick-up
48.
METHOD FOR MONITORING A WIND POWER PLANT AND ROTOR BLADE COMPRISING AN ACCELERATION SENSOR
Disclosed is a method for monitoring a wind power plant. The method comprises the measurement of an acceleration with a fiber-optic acceleration sensor in a rotor blade of the wind power plant, the acceleration sensor being made to less than 10 wt.% of metal or containing less than 20 g of metal.
G01P 15/093 - Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values by photoelectric pick-up
F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
49.
METHOD FOR THE INDIVIDUAL PITCH CONTROL OF ROTOR BLADES OF A WIND TURBINE, AND WIND TURBINES
The invention relates to a method for the individual pitch control of the rotor blades of a wind turbine. The method comprises: measuring an acceleration by means of an acceleration sensor in a rotor blade of the wind turbine; high-pass filtering of a signal of the acceleration sensor in order to determine a time-variant variable; and setting the pitch of the first rotor blade of the wind turbine using the time-variant variable, said pitch setting being part of an individual pitch control.
