With Measuring, Testing, Signalling Or Inspection Means Patents (Class 416/61)
  • Patent number: 8444377
    Abstract: A method for attaching a connector to deposited material includes the steps of depositing material on a substrate using a thin- or thick-film deposition process and attaching at least one connector to the deposited material using a high energy beam welding process.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: May 21, 2013
    Assignee: General Electric Company
    Inventors: Srikanth Chandrudu Kottilingam, Glen Alan Aussiker, Canan Uslu Hardwicke, Kurt Kramer Schleif
  • Publication number: 20130121825
    Abstract: A method is disclosed for calibrating a wind turbine sensor placed on a component of a wind turbine and where the wind turbine is of the type having a rotor with at least one pitchable wind turbine blade. The method comprises pitching one or more of the blades according to a predetermined pitch movement and detecting the response signal from the wind turbine sensor at least partly caused by the pitch movement. From this is then determined a characteristic sensor response value which upon comparison to a predetermined sensor calibration parameter forms the basis for a calibration of the wind turbine sensor if needed. The characteristic sensor response value may be determined from the pitch movement having been performed a number of times over a longer period of time. The invention further relates to a control system and a wind turbine configured for performing the method.
    Type: Application
    Filed: December 27, 2012
    Publication date: May 16, 2013
    Applicant: Vestas Wind Systems A/S
    Inventor: Vestas Wind Systems A/S
  • Patent number: 8434996
    Abstract: A system for detecting loads in a wind turbine is disclosed. In one aspect, the system may generally include a shaft and first and second pillow blocks receiving portions of the shaft. The second pillow block may be spaced axially apart from the first pillow block. Additionally, the system may include at least one sensor configured to indirectly detect loads transmitted through at least one of the first pillow block and the second pillow block.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: May 7, 2013
    Assignee: General Electric Company
    Inventors: Bharat Bagepalli, Nilesh Tralshawala, Aditi Koppikar, Sascha Schieke, Pekka Sipilae
  • Patent number: 8435002
    Abstract: A rotary blade rotating hub mounted rotating assembly vibration control system including a first imbalance mass concentration rotor, a second imbalance mass concentration rotor, a third imbalance mass concentration rotor, and a fourth imbalance mass concentration rotor. The first imbalance mass concentration rotor has a first imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis. The second imbalance mass concentration rotor has a second imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis. The third imbalance mass concentration rotor has a third imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis. The fourth imbalance mass concentration rotor has a fourth imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: May 7, 2013
    Assignee: Lord Corporation
    Inventors: Mark R. Jolly, Andrew D. Meyers
  • Patent number: 8434365
    Abstract: An aerodynamically shaped profile member for aircraft and wind power stations includes, for example, phased-array ultrasonic generator arrangement arranged therein. During operation of the profile member, the ultrasonic generator emits ultrasonic waves in a targeted manner in multiple directions to determine a profile of the thickness of an ice layer on the surface of the aerodynamic profile. The structure may be, for example, a composite fiber material arranged around a foam core, with the ultrasonic generator arrangement being laminated into the composite fiber material. For measurement of the ice thickness, ultrasonic waves are transmitted in a targeted manner to different positions of the surface of the aerodynamic profile, and the ultrasonic waves reflected on the interfaces of the ice layer are detected. At least one region of the surface is scanned by means of the targeted ultrasonic waves, to determine an ice thickness profile.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: May 7, 2013
    Assignee: Airbus Operations GmbH
    Inventors: Rudolf Bilgram, Christian Gradolph, Alois Friedberger, Valentin Kloeppel
  • Publication number: 20130108443
    Abstract: A method for operating a wind turbine having at least one blade includes determining an ambient air operating envelope and controlling a power output of the wind turbine at least partially based on the determined ambient air operating envelope. Determining an ambient air operating envelope includes measuring at least one of an ambient air temperature, an ambient air pressure, an ambient air humidity, and wind turbine power output. The method also includes comparing at least one of a measured ambient air temperature, a measured ambient air humidity and a measured ambient air pressure to predetermined ambient air temperature, pressure and humidity values. The method further includes referencing the predetermined ambient air temperature, pressure and humidity values to at least one operational parameter of the wind turbine. The method also includes determining if an existing wind turbine power output is within a range associated with the determined ambient air operating envelope.
    Type: Application
    Filed: December 19, 2012
    Publication date: May 2, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: GENERAL ELECTRIC COMPANY
  • Patent number: 8430634
    Abstract: A wind turbine for generating electrical power, the turbine having a rotor assembly comprising a hub, a rim and a plurality of blade members extending between the hub and rim, and at least two anemometers mounted at stationary locations relative to the rotor assembly or on the rotor assembly itself, wherein the pitch of individual blade members is adjustable in response to differences in wind speed detected by the anemometers as the rotor assembly rotates.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: April 30, 2013
    Inventor: Herbert Williams
  • Publication number: 20130101417
    Abstract: A wind turbine rotor blade is disclosed that includes a body extending between a blade root and a blade tip. The body may include a pressure side and a suction side extending between a leading edge and a trailing edge and may define an outer surface. In addition, an ultraviolet light-reflective tape may be disposed on the outer surface of the body.
    Type: Application
    Filed: October 25, 2011
    Publication date: April 25, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Joel Russell Cloninger, II, Nicholas R. Farley
  • Patent number: 8428784
    Abstract: The invention relates to a method for the operation of a wind power plant (11) with a rotor (10) and a rotating apparatus (20, 22, 24) connected with the rotor (10), wherein a rotor speed (nR) and a rotating apparatus speed (n) are interrelated via a specifiable transmission ratio, wherein the rotating apparatus speed (n) is determined, and wherein a rotational speed measurement value (rpmi) is captured for the determination of the rotating apparatus speed (n). The method according to the invention is characterized in that the rotational speed measurement value (rpmi) is corrected with an intermittently variable correction value (rpmi,c) so that the determined rotating apparatus speed (rpmi,f) results, and wherein the determined rotating apparatus speed (rpmi,f) is fed as the actual value into a regulation apparatus (36) of the wind power plant (11).
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: April 23, 2013
    Assignee: Repower Systems SE
    Inventor: Thomas Krueger
  • Publication number: 20130094965
    Abstract: A watercraft propulsion device includes an engine, a drive shaft, a propeller shaft, a shift mechanism, an operation force transmitting mechanism, and a magnetostrictive sensor. The drive shaft transmits power from the engine. The propeller shaft is rotationally driven by power transmitted from the drive shaft. The shift mechanism changes a rotation direction of power transmitted from the drive shaft to the propeller shaft. The operating force transmitting mechanism connects to the shift mechanism and transmits a shift operation force to the shift mechanism to cause the shift mechanism operate. The magnetostrictive sensor detects a load acting on the operation force transmitting mechanism.
    Type: Application
    Filed: May 2, 2012
    Publication date: April 18, 2013
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Morihiro OOISHI
  • Publication number: 20130094966
    Abstract: An apparatus, for example for a pitch change mechanism, includes a cylinder having a magnetic portion defining an annular array of features extending parallel to the longitudinal axis of the cylinder, the cylinder rotating in use and able to translate longitudinally. There is a sensing arrangement including a stationary magnetised core and two coils connected in series and wound around the core. In use, the cylinder rotates and current is induced in the coils. Monitoring equipment is arranged to calculate rotational speed of the cylinder from the frequency of the current and to calculate longitudinal position from the relative amplitude of the current in each coil. Also a method.
    Type: Application
    Filed: June 14, 2011
    Publication date: April 18, 2013
    Applicant: ROLLS-ROYCE PLC
    Inventors: Jonathan E. Holt, Stephen G. Garner, Mark J.E. Bellis
  • Publication number: 20130094960
    Abstract: Embodiments of the invention provide methods, systems, and apparatus for determining a property of wind approaching a wind turbine. A light detection and ranging equipment may emit pulsed radiation into oncoming wind to detect properties of the wind at a plurality of predefined locations. A property of the wind approaching the wind turbine may be determined based on the property of wind measured at at least two predefined locations.
    Type: Application
    Filed: October 14, 2011
    Publication date: April 18, 2013
    Inventors: ROBERT Bowyer, Chris Spruce, Martin Evans, Christopher Palmer, Nicholas Hucker
  • Patent number: 8419364
    Abstract: The fan has an arrangement for monitoring the ageing of at least one of its bearing, the arrangement including a reference ambient temperature sensor and a processing circuit for comparing the temperature difference between the temperature measured by the temperature sensor or by each temperature sensor fitted directly on the corresponding bearing and the temperature measured by the reference temperature sensor with a first predetermined value.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: April 16, 2013
    Assignee: Technofan
    Inventor: Laurent Bouchard
  • Publication number: 20130084181
    Abstract: A fan test system includes a control module. The control module includes a temperature-speed table storing standard speeds at different temperatures of a fan, a counter loaded with a default value, and a fan speed control unit setting the time interval for obtaining the actual speed of a fan corresponding to a certain temperature. The fan speed control unit obtains the actual speed of the fan at every interval time, and determines whether the speeds obtained at predetermined continuous interval times are equal. The fan speed control unit obtains the standard speed of the fan according to the certain temperature if the speeds are equal. It indicates the fan is qualified in response to the actual speed being equal to the standard speed.
    Type: Application
    Filed: July 21, 2012
    Publication date: April 4, 2013
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
    Inventors: ZHAO-YANG CAI, JIA-QING HUANG
  • Publication number: 20130078094
    Abstract: Embodiments of the present application can provide systems and methods for mode shape identification of turbine buckets. According to one embodiment, a system can be provided. The system can include a turbine bucket having numerous trigger patterns disposed at a distal end of the turbine bucket. A sensor is disposed adjacent to the distal end of the turbine bucket for detecting the trigger patterns. The trigger patterns are patterned to identify at least one mode shape of the turbine bucket.
    Type: Application
    Filed: September 27, 2011
    Publication date: March 28, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Luke John Ammann, Liming Xu, Stephen Wassynger, Richard Pilson
  • Publication number: 20130078095
    Abstract: A wind energy power plant optical vibration sensor is described, using two light sources 15, 16 that emit light at different respective frequencies. The light from the first light source falls on a surface 44 of the wind energy power plant at a detection site. Movements in the surface result in changes to the phase of the light reflected back from the surface which can be detected by mixing the first light with the light emitted from the second light source. The difference in frequencies between the two light sources results in a beating of the resulting interference signal, whereas movements in the sensor surface result in changes in the phase timing and frequency of the beats.
    Type: Application
    Filed: March 10, 2011
    Publication date: March 28, 2013
    Inventor: Ib Svend Olesen
  • Patent number: 8406690
    Abstract: A system is provided for transmitting data between a first component and a second component, which rotates relative to the first component. The system includes a first coupling element of limited angular extent mounted to the first component, and a second coupling element of limited angular extent mounted to the second component. The first and second coupling elements come into angular alignment once per revolution of the second component relative to the first component. The system further includes a first transceiver connected to the first coupling element, and a second transceiver connected to the second coupling element. The first and second transceivers are configured to detect the angular alignment of the first and second coupling elements. The first and second transceivers are further configured to transmit data between the first and second transceivers via the first and second coupling elements when the angular alignment is detected.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: March 26, 2013
    Assignee: Rolls-Royce PLC
    Inventor: Stephen Granville Garner
  • Patent number: 8398369
    Abstract: The present invention relates to a method and a system for operating a Wind Turbine (WTG), which WTG comprises a rotor comprising at least two blades, which blades are pitch regulated, where the rotor is connected to a shaft, which shaft is supported by bearings, and which shaft drives at least one generator, where the WTG uses a load regulation system for regulating the individual pitch of at least two blades. The object of the invention is to compensate for asymmetric load on the rotor in a wind turbine, a second object is to reduce wearing at shaft bearings in the wind turbine, and a third object is to increase the power production of a wind turbine. This can be achieved if the load regulation system measures the actual rotor load by at least one displacement sensor, which displacement sensor is measuring the bending of the main shaft, where the load regulation system based on the shaft bending regulates the individual pitch of the blades for compensating asymmetric load at the rotor.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: March 19, 2013
    Assignee: Gamesa Innovation & Technology, S.L.
    Inventors: Anders Rebsdorf, Henrik Glent-Madsen
  • Patent number: 8393864
    Abstract: The present disclosure relates to a method for operating a wind turbine with the steps: detection of the values of predetermined operating parameters by means of suitable sensors, detection of at least one predetermined initial condition, comparison of the detected values to stored values of the operating parameters. The disclosure further relates to a wind turbine for implementing the method. Therefore, the object of the present disclosure is, to be able to adapt the operation of a wind turbine to changes using a method of the type named above, such that when the detected parameter values deviate from the stored parameter values, as a function of the initial condition, either the stored parameter values are adapted to the detected parameter values or the operation of the wind turbine is influenced as a function of the detected parameter values.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: March 12, 2013
    Inventor: Aloys Wobben
  • Publication number: 20130058786
    Abstract: A creep indication system and a method for determining a creep amount are disclosed. The system includes a first creep indicating member on a first rotating component and a second creep indicating member on a second rotating component. The second creep indicating member has at least one different creep characteristic from the first creep indicating member. The system further includes at least one measurement device configured to measure a change in radial position of at least one of the first creep indicating member or the second creep indicating member. The method includes measuring a first creep amount of a first creep indicating member and measuring a second creep amount of a second creep indicating member. The method further includes estimating a temperature of a rotating component using the first creep amount and the second creep amount.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 7, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Fred Thomas Willett, JR., Paul Stephen DiMascio
  • Patent number: 8388315
    Abstract: A method of operating a wind turbine having at least one rotor blade and an active flow control (AFC) system is provided. The at least one rotor blade has at least one aperture defined through a surface thereof, and the AFC system is configured to modify aerodynamic properties of the rotor blade by ejecting gas through the aperture. The method includes operating the wind turbine in a normal mode, determining whether an estimated insect density value surrounding the wind turbine is above an insect density threshold value based on a measured environmental condition, and changing a mode of the wind turbine from the normal mode to a cleaning mode different than the normal mode based on the estimated insect density value. The cleaning mode includes adjusting at least one operation parameter of the wind turbine based on the estimated insect density value such that fouling of the aperture is reduced.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: March 5, 2013
    Assignee: General Electric Company
    Inventors: Wouter Haans, Jacob Johannes Nies
  • Patent number: 8371804
    Abstract: A device for detecting a shaft rupture in a rotor of a turbine, in particular a medium-pressure turbine, of a gas turbine, in particular of an aircraft engine, at least one stator-side sensor element being positioned downstream from the turbine, in particular in the area of a stator-side blade ring of another turbine, in particular a low-pressure turbine, and, in case of a shaft rupture of the rotor of the turbine, a radially externally situated segment of a last (seen in the direction of flow) rotor-side blade ring of the turbine working together with the, or with each, sensor element to generate an electrical signal corresponding to the shaft rupture.
    Type: Grant
    Filed: August 26, 2006
    Date of Patent: February 12, 2013
    Assignee: MTU Aero Engines GmbH
    Inventors: Christopher Bilson, Derek Dewey, Andrew Cox
  • Patent number: 8366390
    Abstract: A lubrication system and wind turbine are provided having one or more input ports in a component and one or more output ports in the component. An expandable lubrication receptacle is connected to the one or more output ports, and the expandable lubrication receptacle is configured for receiving a lubrication medium from the component.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: February 5, 2013
    Assignee: General Electric Company
    Inventors: Aquiles TiscareƱo, Elias Marquez, Francisco Corona
  • Patent number: 8366389
    Abstract: A wind turbine and methods for controlling wind turbine thrust are disclosed. In one embodiment, the method includes measuring a tilt angle of a wind turbine in a loaded position using a measuring device. The wind turbine includes a tower, a nacelle mounted on the tower, a rotor coupled to the nacelle, and a plurality of rotor blades coupled to the rotor. The method further includes comparing the tilt angle to a predetermined tilt angle for the wind turbine and, if the tilt angle exceeds the predetermined tilt angle, adjusting a pitch of at least one of the plurality of rotor blades such that the tilt angle is less than or equal to the predetermined tilt angle.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: February 5, 2013
    Assignee: General Electric Company
    Inventors: Till Hoffmann, Hartmut Scholte-Wassink
  • Patent number: 8359917
    Abstract: An arrangement with a nacelle and with at least one instrument of a wind turbine is disclosed. The instrument is connected with a rod. A channel penetrates the wall of the nacelle. The channel interacts with the rod in a way that the rod and its assigned instrument are moved through the channel between a first and a second position. The instrument is positioned inside the nacelle at the first position for installation and/or service purposes, while the instrument is positioned outside the nacelle at the second position for operation purposes of the instrument.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: January 29, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventor: Soeren Oemann Lind
  • Patent number: 8359925
    Abstract: A method is disclosed for inspecting a weld joining a first rotor disk made of nickel alloy and having an inner surface and an outer surface concentric with the rotor's longitudinal axis to a second rotor disk having an inner surface and an outer surface concentric with the rotor's longitudinal axis. The weld made of nickel alloy fills a radial gap between the rotor disks, and has a dissimilar microstructure to either of the rotor disks. The method includes forming at least one slot in the first rotor disk extending through either the inner surface or the outer surface of the first rotor disk terminating in the first rotor disk; and passing an inspection signal from the first slot to the weld to inspect the weld for defects.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: January 29, 2013
    Assignee: Alstom Technology Ltd.
    Inventors: Richard Brendon Scarlin, Andreas Pirscher, Maurus Herzog
  • Patent number: 8360722
    Abstract: A method of validating a wind turbine including a rotor includes intentionally inducing a loading imbalance to the rotor. The method also includes measuring the loading imbalance induced to the rotor, transmitting a signal representative of the measured loading imbalance to a calibration module, and at least one of detecting an error and calibrating at least one component of the wind turbine based on the signal.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: January 29, 2013
    Assignee: General Electric Company
    Inventors: Till Hoffmann, Gert Torbohm, Jignesh Gandhi, Robert Peter Slack
  • Publication number: 20130017086
    Abstract: A blade monitoring system is provided for inspecting the condition of at least one turbine blade of a wind turbine generator. The wind turbine blade condition monitoring system includes a wind turbine which has at least one blade mounted on a hub, the hub mounted to a nacelle body along an axis of rotation, the nacelle being supported on a tower. A storage location is connected to at least one of the nacelle body and the tower and includes an opening. A storage door is mounted to and selectively covers the opening, acting to enclose the storage location. The blade monitoring system also includes imaging equipment for imaging the at least one blade and a conveyance system. The conveyance system is mounted to at least one of the nacelle body and the tower and is connected to the imaging equipment. The conveyance system conveys the imaging equipment from within the storage location through the opening in a direction generally parallel to a longitudinal axis of the at least one blade.
    Type: Application
    Filed: July 12, 2011
    Publication date: January 17, 2013
    Inventor: Kevin R. Till
  • Patent number: 8348611
    Abstract: The invention relates to a sensor system and method for detecting deformation in a wind turbine rotor blade, and particularly to a temperature compensated system and method. A first optic fiber 22b is attached to the rotor blade such that deformation of the component acts on the first optical fiber and causes the optical path length of the fiber to change. A second optic fiber 27 is mounted loosely in the wind turbine component in such a way that it is not subject to deformation. A light source 10, a light detector 11, and a controller 12 input light into the two optical fibers and receive signals from them. Based on the detected light, the controller can determine the optical path length based on the light signals. In different embodiments, the light source varies the input wavelength over a range of wavelengths, provides a multi wavelength light signal, such as a white light source, or inputs a pulsed light signal.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: January 8, 2013
    Assignee: Vestas Wind Systems A/S
    Inventor: Ib Olesen
  • Publication number: 20130002829
    Abstract: Disclosed is a method of capturing 3D data of one or more airborne. At least one image of the one or more airborne particles is taken by a plenoptic camera of which the geometry and the optical properties of its optics are known, and the distance of a plane of focus with at least one selected particle of the one or more airborne particles from a defined reference location is determined by use of the captured image together with the known optical properties and the known geometry of the optics of the plenoptic camera.
    Type: Application
    Filed: June 26, 2012
    Publication date: January 3, 2013
    Inventor: Emil Hedevang Lohse Soerensen
  • Publication number: 20120321464
    Abstract: A method for acoustically monitoring a wind turbine, in particular for monitoring the existence of loose objects inside the wind turbine is provided. A sound generated in a rotating part of the wind turbine is monitored during operation of the wind turbine which sound is analyzed with respect to specific parameter values of the sound within at least one specific frequency range and if such specific parameter values are detected, a signal for possible further actions is generated. An acoustic monitoring system for a wind turbine and a re-equipment kit are also disclosed.
    Type: Application
    Filed: June 14, 2012
    Publication date: December 20, 2012
    Inventors: Jimmi ANDERSEN, Per EGEDAL, Dennis Soebye JENSEN
  • Patent number: 8327710
    Abstract: A system is provided for estimating a condition of a non-conductive hollow structure exposed to a lightning strike. The structure has an internal cavity. The system includes a pressure transducer to measure a pressure of an acoustic wave generated within the internal cavity due to the lightning strike. The system further includes a controller coupled to the pressure transducer, to receive the measured pressure from the pressure transducer, and to process the condition of the structure, based on the measured pressure.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: December 11, 2012
    Assignee: General Electric Company
    Inventors: Glen Peter Koste, Boon Lee, Robert Murray, Yaru Mendez Hernandez, Paul Judge
  • Patent number: 8328514
    Abstract: A method for controlling operation of a wind turbine is described. The wind turbine includes a rotor having a plurality of rotor blades. The method includes measuring an atmospheric condition associated with the environment surrounding the wind turbine, providing the measured atmospheric condition to a processor, and determining at least one monitor set point limit based at least partially on the measured atmospheric condition. The method also includes applying the at least one monitor set point limit to wind turbine operation.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: December 11, 2012
    Assignee: General Electric Company
    Inventors: Renjith Viripullan, Thomas Edenfeld, Vijendra Singh Chauhan, Lothar Wittekind, Udo Ahmann
  • Patent number: 8322984
    Abstract: A rotor blade of a wind energy installation has a wall forming an outer shell, and at least one pressure measurement device arranged inside the rotor blade. The pressure measurement device includes a hollow body that is closed in a gastight fashion and has at least one pressure-dependent deformable diaphragm. At least one optical strain sensor is non-positively connected to each diaphragm. In a method using the pressure measurement device, the wind force is determined at wind energy installations by an evaluation unit which determines a comparison value indicating the difference between the pressure at the side of the outer shell facing the wind and the pressure at the side of the outer shell averted from the wind. A measured value for the wind force acting on the rotor blade is determined from the comparison value. The method can be used for optimized operation and/or protection of wind energy installations.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: December 4, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventor: Thomas Bosselmann
  • Patent number: 8319361
    Abstract: The invention relates to a device for monitoring a wind energy installation (1) comprising a tower (2) and a rotor provided with rotor blades (5) and arranged on the tower, in terms of a possible collision of a rotor blade (5) with the tower (2). Said device comprises at least one distance sensor (7a, 7b) which is arranged on the wind energy installation (1) and used for the non-contact measurement of the distance between the rotor blades (5) and a pre-determined point on the wind energy installation (1). The device also comprises an electronic evaluation system in which the distance data measured by the at least one distance sensor (7a, 7b) is evaluated, said system emitting a collision warning in the event of a critical distance not being reached.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: November 27, 2012
    Inventor: Christoph Lucks
  • Patent number: 8313296
    Abstract: Helicopter rotating hub mounted vibration control system for a rotary wing hub having periodic vibrations while rotating at an operational rotation frequency. The vibration control system includes a housing attachable to the rotary wing hub and rotating with the hub at the operational frequency. The housing is centered about the rotary wing hub axis of rotation and has an electronics housing cavity subsystem and an adjacent rotor housing cavity subsystem. The rotor housing cavity contains a first coaxial ring motor with a first rotor and imbalance mass and a second coaxial ring motor with a second rotor and imbalance mass.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: November 20, 2012
    Assignee: Lord Corporation
    Inventors: Mark Jolly, Stephen Hildebrand, Russell Altieri, Matthew Ferguson, Douglas Ivers
  • Patent number: 8308433
    Abstract: A wind turbine system is presented. The wind turbine system includes a blade comprising an airfoil and a sensing device disposed on a surface of the airfoil, wherein the sensing device generates signals that are representative of pressure deflection on the surface of the airfoil. The wind turbine system further comprises a processing subsystem that receives location details of the sensing device and a transfer function corresponding to the airfoil, determines a location of a stagnation point on the surface of the airfoil based upon the signals and the location details, and determine an angle of attack (AOA) on the surface of the airfoil based upon the location of the stagnation point and the transfer function.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: November 13, 2012
    Assignee: General Electric Company
    Inventors: Jaikumar Loganathan, Subhrajit Dey, Klaus Ulrich Koegler, Manisekaran Santhanakrishnan
  • Publication number: 20120280857
    Abstract: A rotary wing aircraft, a rotor blade and a horizon scanning system are provided. The rotary wing aircraft, for example, may include, but is not limited to, a mast, an engine configured to provide rotational force to the mast and a controller. The rotary wing aircraft may further include a rotor blade connected to the mast having a leading edge, a plurality of tubercles positioned on the leading edge of the rotor blade, and a sensor housed within at least one of the plurality tubercles communicatively connected to the controller.
    Type: Application
    Filed: May 3, 2011
    Publication date: November 8, 2012
    Applicant: RAYTHEON COMPANY
    Inventor: Steven J. Elder
  • Patent number: 8303251
    Abstract: A method of assembling a pitch assembly for use with a wind turbine. The wind turbine includes a rotor and a plurality of rotor blades coupled to the rotor. The method includes coupling a pitch drive system to at least one of the plurality of rotor blades for rotating the rotor blade about a pitch axis. At least one sensor is coupled in signal communication with the pitch drive system. The pitch drive system rotates the rotor blade when the sensor senses rotor overspeed.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: November 6, 2012
    Assignee: General Electric Company
    Inventors: Friedrich Loh, Detlef Menke
  • Patent number: 8297915
    Abstract: Disclosed herein are a turbo-machinery blade breakage monitoring unit and a turbo-apparatus having the same. The blade breakage monitoring unit includes a pressure sensor disposed near a rotor having a plurality of blades to be rotated at a predetermined speed, the pressure sensor functioning to measure total pressures of the respective blades. The blade breakage monitoring unit further includes a controller electrically connected to the pressure sensor and functioning to judge whether or not each measured total pressure value, transmitted from the pressure sensor, is within a preset criterion total pressure range. With the use of the blade breakage monitoring unit, total pressures of the respective blades are monitored in real time at a position downstream of the blades when the blades are rotated at a high speed within the turbo-apparatus, such as a turbine, compressor and fan, enabling real-time monitoring of breakage of the blades.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 30, 2012
    Assignee: Korea Aerospace Research Institute
    Inventors: Jeong S. Kang, Bong J. Cha, Lee K. Ahn
  • Patent number: 8292568
    Abstract: In order to provide a wind turbine generator and an operation method of the wind turbine generator which is not subjected to damages caused by foreign objects inside a rotor hub, the wind turbine generator comprises blades, a rotor hub to which the blades are fixed, a rotating shaft such as a main shaft and a coupling being connected to the rotor hub and rotating with the rotor hub, a FO detection sensor arranged inside the rotor hub for detecting a foreign object inside the rotor hub, a brake device such as a pitch control unit and a parking brake for stopping the rotation of the rotating shaft, and a controller for controlling the brake device to stop the rotation of the rotating shaft when the FO detection sensor detects the foreign object.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: October 23, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Naota Watanabe
  • Patent number: 8292579
    Abstract: A method and associated system are provided for deicing turbine blades of a wind turbine, wherein rotational torque from a rotor hub on which the turbine blades are mounted is transmitted to a generator. The method and system include detecting conditions that are indicative of ice formation on a wind turbine blade. In response to detected icing conditions, generator torque is modulated so as to induce upstream vibrations in the turbine blades to shake loose ice that may have formed on the turbine blades.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: October 23, 2012
    Assignee: General Electric Company
    Inventor: David Cole Magnuson
  • Publication number: 20120263592
    Abstract: A method for measuring the wind direction signal of a wind turbine is described. The wind direction signal is measured in the wake of a wind turbine rotor. The measured wind direction signal is sorted using at least one sorting parameter. The sorted wind direction signal can be optimised using at least one optimising parameter.
    Type: Application
    Filed: April 17, 2012
    Publication date: October 18, 2012
    Inventor: Soeren Oemann LIND
  • Patent number: 8286494
    Abstract: One or more bolt gauges each with a built-in load cell are positioned on a blade bolt or a bearing bolt between a pitch bearing and a tightening means and tensioned by the securing means at the inside or the outside of a hub of a wind turbine. The bolt gauge then outputs a signal descending both from the tension from the bolt/securing means connection and the tension from the blade when the blade is vibrated due to wind forces and the rotation of the blade when the hub of the wind turbine is rotating.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: October 16, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Bo Birkemose, Henrik Stiesdal, Soeren Vinther
  • Publication number: 20120256055
    Abstract: An aircraft rotary wing motion control fluid device providing motion control and with wireless sensing of at least one fluid property inside the fluid device is provided. The wireless sensing system is integrated with at least one of the first and second aircraft rotary wing motion control fluid device bodies. The wireless sensing system includes at least one fluid property sensor in sensing proximity to the at least one fluid chamber and a communications device for wirelessly conveying a measurement made by the at least one fluid property sensor to a remote location.
    Type: Application
    Filed: April 5, 2012
    Publication date: October 11, 2012
    Inventors: Mark R. Jolly, Zachary Fuhrer, Robert E. Fogle, David M. Catanzarite
  • Patent number: 8282343
    Abstract: A vane for a gas turbine engine includes a cap arrangement having a cap insert and a cap adapted to receive the insert. The cap insert has a wall defining a through passage from top to bottom of the cap insert for receiving a cable or the like therethrough. The wall has a slot with a convoluted profile.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: October 9, 2012
    Assignee: Rolls-Royce PLC
    Inventor: Robert J. Smith
  • Publication number: 20120251317
    Abstract: A wind power plant having a nacelle and a rotor and a data transmission system which is suitable and equipped for transmitting data from a first data contact device in the nacelle through a data transmitter to a second data contact device in the rotor which is rotatable relative to the first data contact device. The first data contact device is connected with a first DSL modem which is connected with a second DSL modem via the data transmitter. The second DSL modem is connected with the second data contact device. The data transmitter is provided between the first and second data contact devices.
    Type: Application
    Filed: April 3, 2012
    Publication date: October 4, 2012
    Inventor: Marc Reitmaier
  • Publication number: 20120248256
    Abstract: A system and method for a pressure based load measurement system are provided. The system includes two pressure orifices arranged on a top surface and a bottom surface of an airfoil. The pressure differential between these two points is determined and an estimate of the aerodynamic load generated by the airfoil is determined from a linear correlation between pressure differential and load. The location of the orifices may be optimized using analytical or experimental techniques and a least squares empirical curve fit may be used to fit the data collected.
    Type: Application
    Filed: March 6, 2012
    Publication date: October 4, 2012
    Applicant: FRONTIER WIND, LLC
    Inventor: Edward A. Mayda
  • Patent number: 8277183
    Abstract: A method is provided for monitoring a wind turbine using a combined supervisory command and data acquisition (SCADA) and video monitoring system. The method includes receiving video data from at least one video camera, wherein the video data is related to operating conditions of the wind turbine. The method also includes storing the video data in a memory, and receiving a command from a remote monitoring server relating to at least a portion of the video data, wherein the portion of the video data is associated with at least one SCADA data point. The method also includes retrieving the portion of the video data from the memory, and transmitting the portion of the video data to the remote monitoring server for presentation to a user.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: October 2, 2012
    Assignee: General Electric Company
    Inventor: Xiaojuan Qu
  • Patent number: 8277185
    Abstract: A wind turbine having at least one rotor blade attached to a rotor hub is provided, wherein the wind turbine further includes at least one sensor disposed at or near the rotor blade, the sensor being adapted to detect an aerodynamic condition of the rotor blade.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: October 2, 2012
    Assignee: General Electric Company
    Inventor: Detlef Menke