44results about "Input signal generation" patented technology

A method for detecting at least one property of a component (13, 27, 36) of or for a wind turbine blade (3), comprising: inducing (S1), by applying a primary magnetic field (25), a current (24) in a microwire (15) integrated in the component (13, 27, 36), measuring (S2) a secondary magnetic field (26) generated by the current (24) induced in the microwire (15), and determine (S1), based on the measured secondary magnetic field (26), the at least one property of the component (13, 27, 36). The method provides for efficient contactless structural health monitoring.

The invention concerns a method (1000,2000,3000) for controlling a plant (30) for the generation of electrical energy through the exploitation of the wave motion (54) in a body of water. The plant (30) comprises at least one generation module (34) adapted to convert kinetic energy associated with the wave motion (54) into electrical energy by means of a movable element (62) adapted to move due to the action of the wave motion (54) and a generator element (66) adapted to convert the movement of the movable element into electrical energy, at least one sensor (72) adapted to provide a measurement indicative of the wave motion (54) with respect to an element of the plant (30). The method comprises the steps of acquiring a plurality of measurements, calculating a damping coefficient associated with the conversion of motion into electrical energy of the generator element (66), and regulating the operation of the generator element (66) so as to impose the calculated damping coefficient.

A fitting for a pressurized fluid circuit having an impeller drivable in rotation by a pressurized fluid crossing the fitting is provided. The impeller supports a plurality of magnets coupled to a plurality of coils for generating an electric current in the presence of a variable magnetic field generated by a rotation of the magnets.

Wind turbine comprising a tower (2) supporting a nacelle (5) and a rotor (3) having a plurality of rotor blades (4) and an active noise reduction device (7), wherein the active noise reduction device (7) comprises at least one actuator (8), at least one unsteady pressure sensor (9) adapted to generate an output signal corresponding to a turbulent flow condition during operation of the rotor blades (4), at least one noise sensor (10) adapted to generate an output signal corresponding to a noise generated by the rotor blades (4) at the position of the noise sensor (10), wherein the unsteady pressure sensor (9) and the actuator (8) are arranged on at least one of the rotor blades (4) and the noise sensor (10) is arranged at the nacelle (5) and / or at the tower (2), wherein the control unit (11) is adapted to control the actuator (8) depending on the output signals of the unsteady pressure sensor (9) and the noise sensor (10) to emit an anti-noise signal at least partially reducing the noise generated by the rotor blades (4).

A wind power generation device control system (100a, 100b) includes: a blade wind detecting device (400, 400a, 400b, 400c) for detecting at least one of a wind direction or a wind speed on at least one blade (230a, 230b, 230c) of a wind power generation device (200); and a blade control device (300a, 300b, 300c) for controlling at least one of (i) a pitch angle of the at least one blade (230a, 230b, 230c) or (ii) a yaw angle of the wind power generation device (200), based on at least one of the wind direction or the wind speed detected by the blade wind detecting device (400, 400a, 400b, 400c).

In a first aspect, a wind turbine blade torsion measuring system is provided. The wind turbine blade torsion measuring system comprises a shaft, a rotary sensor assembly and a connecting structure. The connecting structure is configured to movably connect the rotary sensor assembly to a blade structure to allow a relative movement between the rotary sensor assembly and the blade structure in a direction substantially parallel to the spanwise direction of the wind turbine blade. In a further aspect, a wind turbine blade comprising one or more wind turbine blade torsion measuring systems is provided. In yet a further aspect, a method of determining the torsional deformation of this wind turbine blade is provided. In yet a further aspect, a method for mounting the wind turbine blade torsion measuring system in a wind turbine blade is provided.

A method for detecting at least one characteristic of a component (13, 27, 36) of a wind turbine blade (3) or at least one characteristic of said component for said wind turbine blade, the method comprising: inducing (S1) an electric current (24) in a microwire (15) integrated in said component (13, 27, 36) by applying a primary magnetic field (25), measuring (S2) a secondary magnetic field (26) generated by the current (24) induced in the microwire (15), and determining (S3) the at least one characteristic of the component (13, 27, 36) based on the measured secondary magnetic field (26). The method provides efficient non-contact structural health monitoring.

The technology disclosed relates to a wind turbine and a measurement system comprising at least three measurement units, each arranged in substantially the same horizontal plane of a wind turbine tower and configured to measure their respective movements, and at least one tilt sensor or vertically oriented geophone arranged in substantially the same horizontal plane as the at least three measurement units and configured to determine the current tilt or inclination of a horizontal plane section determined by the mounting positions of the at least three measurement units. In particular, the measurement system comprising the at least three measurement units and the at least one tilt sensor or vertically oriented geophone is configured to continuously determine the current position and inclination of a horizontal plane section essentially determined by the mounting positions of the at least three measurement units based on the movement measurement data obtained by the at least three measurement units and the inclination of the horizontal plane section obtained by the at least one tilt sensor or vertically oriented geophone.

To provide a fixture etc. with a detection circuit which can detect a load when a drive device is stopped.SOLUTION: One embodiment of the invention relates to a fixture having a head part, a circular column part integrally molded with the head part, and a screw part integrally molded with the circular column part. The fixture is a fixture with a detection circuit including: a resistor attached to the circular column part; and a circuit part attached to the head part and connected to the resistor, the fixture having a bridge circuit which detects electric resistance of the resistor.SELECTED DRAWING: Figure 5

The method is for operating a wind turbine having a rotor with at least one rotor blade and a setting system which is configured to change the operation of the wind turbine. The method includes a step in which first trigger information is provided, wherein the first trigger information is representative of whether the torsional movement of at least one rotor blade exceeds a threshold. If this is the case, a first output signal is generated which is configured to cause the setting system to change the operation of the wind turbine to reduce the torsional movement of the at least one rotor blade.

Disclosed is a method of detecting abnormal conditions, e.g. of a blade or a rotor, on a wind turbine generator. Also disclosed is a system for detecting abnormal conditions, e.g. of a blade or rotor on a wind turbine generator.

The technology disclosed relates to a wind turbine and a measurement system comprising at least three measurement units, each arranged in substantially the same horizontal plane of a wind turbine tower and configured to measure their respective movements, and at least one tilt sensor or vertically oriented geophone arranged in substantially the same horizontal plane as the at least three measurement units and configured to determine the current tilt or inclination of a horizontal plane section determined by the mounting positions of the at least three measurement units. In particular, the measurement system comprising the at least three measurement units and the at least one tilt sensor or vertically oriented geophone is configured to continuously determine the current position and inclination of a horizontal plane section essentially determined by the mounting positions of the at least three measurement units based on the movement measurement data obtained by the at least three measurement units and the inclination of the horizontal plane section obtained by the at least one tilt sensor or vertically oriented geophone.

The invention provides a computer-implemented method of controlling operation of a wind turbine in which a plurality of wind turbine zones are defined. The method comprises, for each of the plurality of wind turbine zones: receiving sensor data from at least one electromagnetic radiation sensor arranged to monitor the respective wind turbine zone; and, determining, based on the received sensor data, whether one or more people are in the respective wind turbine zone. The method comprises selecting an operational mode of the wind turbine based on the determination as to which of the plurality of zones have one or more people therein, and controlling the wind turbine to operate in the selected operational mode.

The present invention relates to a wave energy to electrical energy converter, the wave energy converter comprising a hull (1), a movable mass (3), a guide (4) for displacement of the mass (3) and an electric power generator (10); the electric power generator (10) comprising a rotor, the mass (3) being coupled to the rotor by means of a mechanism configured to convert displacement of the mass (3) into rotation of the rotor; the mass (3), the guide (4), the generator (10) and the mechanism being in the hull (1); the guide having a port to starboard direction; the converter comprising a controller configured to adjust a rotor torque on the basis of the instantaneous position of the mass (3), instantaneous velocity of the mass (3) and the rolling of the hull (1).

Wind turbine comprising a tower (2) bearing a nacelle (5) and a rotor (3) with a plurality of rotor blades (4) and an active noise reduction device (7), wherein the active noise reduction device (7) comprises at least one actuator (8), at least one unsteady pressure sensor (9) adapted to produce an output signal corresponding to a turbulent flow condition during operation of the rotor blade (4), at least one noise sensor (10) adapted to produce an output signal corresponding to a noise generated by the rotor blade (4) at the location of the noise sensor (10), and a control unit (11), wherein the unsteady pressure sensor (9) and the actuator (8) are arranged on at least one of the rotor blades (4) and the noise sensor (10) is arranged at the nacelle (5) and / or at the tower (2), wherein the control unit (11) is adapted to control the actuator (8) in dependence of the output signals of the unsteady pressure sensor (9) and the noise sensor (10) to emit an anti-noise signal at least partly reducing the noise generated by the rotor blade (4).

A wind power generation device control system includes: a blade wind detecting device for detecting at least one of a wind direction or a wind speed on at least one blade of a wind power generation device; and a blade control device for controlling at least one of (i) a pitch angle of the at least one blade or (ii) a yaw angle of the wind power generation device, based on at least one of the wind direction or the wind speed detected by the blade wind detecting device.

A fitting (1) for a pressurized fluid circuit comprises an impeller (16) capable of being driven in rotation by a pressurized fluid passing through the fitting. The impeller (16) supports a plurality of magnets (18) coupled with the plurality of coils (20) to generate an electrical current in the presence of a variable magnetic field generated by rotation of the magnets (18).

A wind power generation device control system (100a, 100b) includes: a blade wind detecting device (400, 400a, 400b, 400c) for detecting at least one of a wind direction or a wind speed on at least one blade (230a, 230b, 230c) of a wind power generation device (200); and a blade control device (300a, 300b, 300c) for controlling at least one of (i) a pitch angle of the at least one blade (230a, 230b, 230c) or (ii) a yaw angle of the wind power generation device (200), based on at least one of the wind direction or the wind speed detected by the blade wind detecting device (400, 400a, 400b, 400c).

A fitting (1) for a pressurized fluid circuit comprises an impeller (16) drivable in rotation by the pressurized fluid crossing the fitting. The impeller supports a plurality of magnets (18) coupled to a plurality of coils (20) for generating an electric current in the presence of a variable magnetic field generated by the rotation of the magnets.

A method of controlling an operation of a floating wind turbine which performs a yaw rotation, a roll rotation and a pitch rotation, which controls a parameter of the operation of the wind turbine by determining a pitch rotation; determining a roll rotation; calculating a pitch difference between the determined pitch rotation and a wind turbine pitch reference; calculating a roll difference between the determined roll rotation and a wind turbine roll reference; determining a pitch and roll impact value based on the pitch difference and the roll difference; determining a reference of the parameter based on a predefined reference of the parameter and the pitch and roll impact value; and controlling the parameter of the wind turbine based on the reference of the parameter.

A method for detecting at least one property of a component (13, 27, 36) of or for a wind turbine blade (3), comprising: inducing (S1), by applying a primary magnetic field (25), a current (24) in a microwire (15) integrated in the component (13, 27, 36), measuring (S2) a secondary magnetic field (26) generated by the current (24) induced in the microwire (15), and determine (S1), based on the measured secondary magnetic field (26), the at least one property of the component (13, 27, 36). The method provides for efficient contactless structural health monitoring.

To provide methods and systems for determining reliability or correct functioning of load sensors in wind turbines.SOLUTION: The present disclosure relates to a method for determining reliability of one or more load sensors in a wind turbine. The method comprises measuring loads with the load sensors during operation of the wind turbine; determining in-plane moments based on the measured loads; selecting the in-plane moments with 1 p frequency; and comparing the selected in-plane moments with theoretical in-plane moments due to the mass of the blade. The method then comprises determining that the load sensors have reduced reliability if the selected in-plane moments deviate from the theoretical in-plane moments by more than a first threshold value. The present disclosure also relates to wind turbine systems incorporating load sensors, and methods for on-line determination of correct functioning of load sensors mounted on a wind turbine blade.SELECTED DRAWING: Figure 3A

A system for installing on a wind turbine tower at least one moving objects monitoring device and / or at least one moving objects collision prevention device, comprising: a mounting base (1) adapted to be mounted on the tower and comprising a flat surface (A) and at least one pair of opposite walls (2, 2′), a box (10) for installing the aforementioned devices comprising a flat base (11) and four sides (12, 12′, 12″, 12″), wherein the box (10) is adapted to be connected to the mounting base (1) to form a closed space inside the box (10) and comprises at least one opening (13, 13′, 13″), and at least one supporting base (14, 14′, 14″) for supporting the aforementioned devices on the flat base (11) so that only the part which is necessary to be located outside the box (10) for performing the monitoring and / or collision prevention functions protrudes from the opening (13, 13′, 13″).

According to an embodiment, the method is for operating a wind turbine having a rotor with at least one rotor blade and a setting system which is configured to change the operation of the wind turbine. The method includes a step in which first trigger information is provided, wherein the first trigger information is representative of whether the torsional movement of at least one rotor blade exceeds a threshold. If this is the case, a first output signal is generated which is configured to cause the setting system to change the operation of the wind turbine in order to reduce the torsional movement of the at least one rotor blade.

The invention concerns a method (1000,2000,3000) for controlling a plant (30) for the generation of electrical energy through the exploitation of the wave motion (54) in a body of water. The plant (30) comprises: - a bearing structure (32) comprising an emerged part and an immersed part, - at least one generation module (34) adapted to convert kinetic energy associated with the wave motion (54) into electrical energy by means of a movable element (62) adapted to move between two end-of-stroke positions due to the action of the wave motion (54) and a generator element (66) adapted to convert the movement of the movable element into electrical energy, the generation module (34) comprising a platform (36,60) coupled to the bearing structure (32), - a sensor (72) adapted to provide a measurement indicative of the wave motion (54) with respect to a first reference element (36,60) of the plant (30), and - actuation means adapted to move the platform (36,60) with respect to the bearing structure (32) along a longitudinal direction of the bearing structure (32), Advantageously, the method comprises the steps of: - acquiring (1000, 3001) a plurality of measurements of the sensor, - calculating (3004) an average position value of the level of the body of water (52) with respect to a second reference element (32) of the plant (30) based on the plurality of measurements, and - modifying (3010, 3013, 3014) the position of the platform (36,60) with respect to the second reference element (32) by actuating the movement means (76) so as to guarantee a desired movement excursion of the movable element (62) as a function of the average position value of the level of the body of water wherein the plant (30) comprises a further movable element (70,74) adapted to move between a first position and a second position by effect of the wave motion (54), where the sensor (72) provides a measurement of the position of the further movable element (70,74) with respect to the first reference element (36,60) of the plant (30), and wherein the step of calculating (3004) an average position value of the level of the sea (52) with respect to the reference element (32) of the plant (30) comprises calculating the level variation according to the formula: (I) where r m is the radius of a circular surface of contact with the further movable element (70,74), g is the acceleration of gravity, M m is the mass of the further movable element (70,74), x m is the position of the further movable element (70,74) with respect to the reference element (32), ρ is the density of water, and δ(ω) is an impulse function.

To provide a fitting for a pressurized fluid circuit capable of generating electrical energy, e.g., for powering sensors, while satisfying requirements for compactness, robustness, design simplicity and insulation.SOLUTION: A fitting (1) for a pressurized fluid circuit comprises an impeller (16) drivable in rotation by a pressurized fluid crossing the fitting. The impeller supports a plurality of magnets (18) coupled to a plurality of coils for generating an electric current in the presence of a variable magnetic field generated by rotation of the magnets.SELECTED DRAWING: Figure 3

The present invention relates to a renewable energy system designed to harness hydrokinetic energy from riverine environments using bio-inspired hydrofoil mechanisms. The system comprises a pair of hydrofoils configured to oscillate out-of-phase in response to water flow, a mechanical motion rectifier to convert oscillatory motion into unidirectional rotary motion, and a generator to produce electrical energy. A support structure stabilizes the components, while a control system optimizes energy generation by adjusting hydrofoil pitch angles and oscillation parameters based on sensory feedback. This innovative approach offers a scalable, efficient, and environmentally friendly solution for riverine hydrokinetics, minimizing ecological impact and adapting to varying site conditions.

According to an embodiment, the method is for operating a wind turbine (100) having a rotor (10) with at least one rotor blade (1, 2, 3) and a setting system (31, 32) which is configured to change the operation of the wind turbine. The method comprises a step in which first trigger information (Ia1) is provided, wherein the first trigger information is representative of whether the torsional movement of at least one rotor blade exceeds a threshold. If this is the case, a first output signal (OS1) is generated which is configured to cause the setting system to change the operation of the wind turbine in order to reduce the torsional movement of the at least one rotor blade.

The invention provides a computer-implemented method of controlling operation of a wind turbine in which a plurality of wind turbine zones are defined. The method comprises, for each of the plurality of wind turbine zones: receiving sensor data from at least one electromagnetic radiation sensor arranged to monitor the respective wind turbine zone; and, determining, based on the received sensor data, whether one or more people are in the respective wind turbine zone. The method comprises selecting an operational mode of the wind turbine based on the determination as to which of the plurality of zones have one or more people therein, and controlling the wind turbine to operate in the selected operational mode.