Method Of Operation Patents (Class 416/1)
  • Patent number: 9822768
    Abstract: The invention relates to a wind turbine comprising a rotor hub (7) rotating about a rotor axis (8), rotor blades (9, 10, 11) extending radially with respect to the rotor axis (8) at the same angular spacing relative to one another, and a remote wind gauge (19) that is fastened externally on the surface of the hub (7) in a mounting (20) and oriented such that wind characteristics at a distance in front of the hub (7) can be ascertained or measured, wherein the remote wind gauge (19) is arranged between two neighbouring rotor blades (9, 10) and in the radial direction of the rotor axis (8) and the mounting (20) is fastened to a respective blade bearing flange (21, 22) in the region of the connection of the rotor hub (7) to the rotor blades (9, 10), such that the remote wind gauge (19) can be retrofitted to the wind turbine (1).
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: November 21, 2017
    Assignee: SSB Wind Systems GmbH & Co. KG
    Inventor: Norbert Kötting
  • Patent number: 9822762
    Abstract: The present subject matter is directed to a system and method for operating a wind turbine. The method includes determining an actual operating time for one or more wind turbine components at multiple power levels; determining a corresponding wind condition for each of the operating times at each power level; estimating a loading condition acting on the one or more wind turbine components at the multiple power levels and the corresponding wind conditions; estimating an accumulated fatigue life consumption of the one or more wind turbine components based at least partially on the operating times and the estimated loading conditions; and, operating the wind turbine based on the accumulated fatigue life consumption.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: November 21, 2017
    Assignee: General Electric Company
    Inventors: Henk-Jan Kooijman, Neils Chris Schmitt, Kapil Dagg
  • Patent number: 9790926
    Abstract: Counterweight systems for a wind turbine comprising a hub mounted to a nacelle such that the hub is rotatable around a rotation axis with respect to the nacelle, the hub comprising a blade root region configured to receive a root of a blade and having a pitch system configured to rotate the blade around a pitch axis. The counterweight system comprises a beam mountable to the blade root region at a first point of the beam and a counterweight mass coupled to the beam at a second point of the beam, such that, when the beam is mounted to the blade root region, the beam is arranged substantially perpendicular to the pitch axis and the pitch system can cause the counterweight mass to rotate around the pitch axis. Methods are also provided of mounting one or more blades to a wind turbine hub by using such counterweight systems.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: October 17, 2017
    Assignee: ALSTOM Renewable Technologies
    Inventor: Santiago Canedo Pardo
  • Patent number: 9771806
    Abstract: A turbine blade has hollowness, and is provided with a back-side wall of which a portion of the inner wall surface is exposed at the rear edge portion, with cooling air flown along the inner wall surface at the exposed region; and a recess provided in the inner wall surface at the exposed region. The contour of the recess (5) viewed from the normal direction of the inner wall surface of the back-side wall is set to a shape that is symmetrical centered on a reference axis (L) that intersects the flow direction of cooling air, and that broadens along the reference axis (L).
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: September 26, 2017
    Assignees: IHI CORPORATION, THE SOCIETY OF JAPANESE AEROSPACE COMPANIES
    Inventors: Yoji Okita, Akira Murata
  • Patent number: 9752449
    Abstract: An annulus filler, mounted to a rotor disc of a gas turbine engine and bridging the gap between two adjacent blades attached to the rotor disc, is disclosed. The annulus filler, formed from a polymer matrix composite material, includes an outer lid, defining an airflow surface for air drawn through the engine in an axial airflow direction, and a support structure, connectable to the rotor disc, to support the rear of the lid on the rotor disc. The support structure has two support walls extending from opposing lateral sides of the lid to an attachment strap for receiving a hook on the rotor disc, the attachment strap bridging the support walls. Under centrifugal loads, the opposing support walls resiliently deform. Each support wall has a concave rear edge. Each rear edge has a first curved section, a second curved section and a substantially straight section therebetween.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: September 5, 2017
    Assignees: ROLLS-ROYCE PLC, FACC AG
    Inventors: Kristofer John Bottome, James Andrew Lee, Paul Mason, Ewan Fergus Thompson, Gion Barandun, Markus Henne, Konstantin Horejsi, Martin Fleischmann, Christof Obertscheider, Thomas Keusch
  • Patent number: 9745035
    Abstract: In an apparatus for controlling an outboard motor mounted on a boat and having an internal combustion engine and a variable pitch propeller, characteristics defining a desired pitch angle of the propeller that makes fuel consumption minimum relative to a navigation speed of the boat are memorized and the pitch angle of the propeller is controlled to the desired pitch angle that is corresponding to the navigation speed detected by a navigation speed detector in accordance with the characteristics.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: August 29, 2017
    Assignee: Honda Motor Co., Ltd.
    Inventors: Naoki Hiroshima, Hiroshi Yamamoto
  • Patent number: 9745051
    Abstract: An engine control device having a calculator for calculating a pitch setpoint for at least one propeller of the engine, the calculator taking account at least of a flight speed.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: August 29, 2017
    Assignee: SNECMA
    Inventors: Nicolas Jerome Jean Tantot, Thierry Brichler
  • Patent number: 9739162
    Abstract: An annulus filler is provided for mounting to a rotor disc of a gas turbine engine and bridging the gap between two adjacent blades attached to the rotor disc. The annulus filler is substantially entirely formed from a polymer matrix composite material. It has an outer lid which defines an airflow surface for air being drawn through the engine in an axial airflow direction, and a support structure which is connectable to the rotor disc to support the lid on the rotor disc. The support structure has two support walls extending from opposing lateral sides of the lid to an attachment strap for receiving a hook on the rotor disc, the attachment strap bridging the support walls. In use, under centrifugal loads, the opposing support walls resiliently deform to allow outward radial movement of the lid. Each support wall is thickened in a region neighboring the attachment strap.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: August 22, 2017
    Assignee: ROLLS-ROYCE plc
    Inventors: Kristofer John Bottome, Paul Mason, James Andrew Lee, Ewan Fergus Thompson
  • Patent number: 9729096
    Abstract: An aircraft electrical power generation system includes an AC generator having a rotor including a plurality of electromagnetic rotor-windings and stator including plurality of electrical stator-windings. The rotor mechanically coupled to a shaft of a gas turbine engine by transmission-system. The generator includes a frequency controller, a torque sensor determining a torque on the transmission-system by the generator and controller to operate the system in first and second modes. In first mode, the power output frequency of the generator controlled by the frequency controller within limits, and reduced idle signal going to a turbine engine controller. In second mode, the power output frequency of the generator not controlled by the frequency controller and increased idle signal going to the turbine engine controller. The controller operates the system in first mode when the torque is below a limit, and in second mode when the torque is above a limit.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: August 8, 2017
    Assignee: ROLLS-ROYCE plc
    Inventor: Huw Llewelyn Edwards
  • Patent number: 9709024
    Abstract: A free stream fluid kinetic energy conversion device combines a large diameter freewheeling primary rotor with small diameter secondary power takeoff rotors placed within the lift induced blade tip vortices of the primary rotor. This enables use of high rotational speed generating units and avoids diseconomy of scale in gearbox expense. The device partially recovers otherwise lost blade tip vortex energy. The freewheeling primary rotor transmits no reaction torque to the support structure. Resilient buoyant tether deployment accommodates transient eddy induced structural loads.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: July 18, 2017
    Inventor: John Hincks Duke
  • Patent number: 9711964
    Abstract: A method for controlling operation of a power generation and delivery system while increasing a power output of the power generation and delivery system is described. The method includes, monitoring an output parameter of the power generation and delivery system and determining a rate of change of the output parameter as a function of time. A reactive current command signal is generated a as a function of the determined rate of change of the output parameter. Operation of a power converter is controlled based at least partially on the reactive current command signal to facilitate maintaining a substantially constant terminal voltage as the power output of the power generation and delivery system is increased.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: July 18, 2017
    Assignee: General Electric Corporation
    Inventors: Alfredo Sebastian Achilles, Einar Vaughn Larsen
  • Patent number: 9702338
    Abstract: The invention relates to a device (10) for manufacturing a fiber composite component (3, 4, 5), which is connected to an attachment element (22), for a rotor blade (2) of a wind turbine (1), wherein the fiber composite component (3, 4, 5) is or will be manufactured from at least one fiber material (15, 21) and at least one matrix material, wherein the attachment element (22) is provided with a first region (221) arranged outside of the fiber composite component (3, 4, 5) and a second region (222) integrated into the fiber composite component (3, 4, 5), comprising a manufacturing mold (11) for the fiber composite component (3, 4, 5) with a recess (12), wherein the recess (12) has a first region (121) for receiving the first region (221) of the attachment element (22), and a retention device (13), by means of which fluid matrix material is or will be retained from the first region (121) of the recess (12).
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: July 11, 2017
    Assignees: Senvion SE, Carbon Rotec GMBH & Co. KG
    Inventors: Tilman Richers, Lenz Simon Zeller, Kai Danekas
  • Patent number: 9664174
    Abstract: Aerodynamic root adapters for rotor blades include an interior support section having a first end that connects to a root end of the rotor blade and a second end that connects to a rotor hub of the wind turbine, and, an aerodynamic exterior section supported by the interior support section. The aerodynamic exterior section thereby extends an aerodynamic profile of the rotor blade beyond the root end of the rotor blade to at least partially between the root end of the rotor blade and the rotor hub when the aerodynamic root adapter is connected thereto.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: May 30, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Saravakota Sambamurty, Mohan Muthu Kumar Sivanantham, Afroz Akhtar
  • Patent number: 9637221
    Abstract: A method and apparatus for controlling a propeller of a contra-rotation open fan (CROF) engine of an aircraft is provided. A diameter of the propeller is set to be at a first diameter during at least a portion of a first flight condition of the aircraft. The diameter of the propeller is set to be at a second diameter, different from the first diameter, during at least a portion of a second flight condition of the aircraft.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: May 2, 2017
    Assignee: THE BOEING COMPANY
    Inventors: Matthew David Moore, Kelly L. Boren, Robin Blair Langtry
  • Patent number: 9631516
    Abstract: The invention relates to a drive (1) of a tail rotor (12) of a helicopter (10) by a permanently excited transversal flux machine in duplex arrangement in such a way that between two stators (4), which each have a toroidal winding system (8), there is arranged a disc-shaped impeller (5), which has permanent magnets (15) and on the outer circumference of which propeller blades (14) of the tail rotor (12) are arranged.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: April 25, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Jens Hamann, Hans-Georg Köpken, Dietmar Stoiber
  • Patent number: 9631605
    Abstract: A pitch system (20) for rotating a blade (4) of a wind turbine relative to a hub (6) generally comprises a bearing (22) having an inner bearing ring (30) configured to be mounted to the hub and an outer bearing ring (32) configured to be mounted to the blade. A first coupling member (24) positioned between the hub and inner bearing ring extends radially inward. A second coupling member (26) positioned between the blade and outer bearing ring extends radially inward and over the inner bearing ring. A drive system (28) includes a first drive member (34) coupled to the first coupling member and a first driven member (36) coupled to the second coupling member. The first drive member is configured to move the first driven member to rotate the outer bearing ring relative to the inner bearing ring and thereby pitch the blade.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: April 25, 2017
    Assignee: Vestas Wind Systems A/S
    Inventors: Jesper Lykkegaard Neubauer, Ole Mølgaard Jeppesen, Robert Rowntree, Leif Christoffersen, Peter Bøttcher, Gerry Madden
  • Patent number: 9581141
    Abstract: Disclosed is a system and method for monitoring wind turbines, generally comprising a microphone for picking up acoustic emissions from a wind turbine and outputting a signal corresponding to the emissions; a filter for splitting the signal into a plurality of signals according to a plurality of frequency bands; and a processor for processing the plurality of signals and generating sound level data corresponding to at least a subset of the frequency bands. The system compares the sound level data with a sound threshold and generates an alarm signal when the sound level data exceeds the sound threshold. Alternatively, the system may include different thresholds corresponding to the different frequency bands, and an alarm can be generated when one or more of the different thresholds are exceeded by the different signals in the different frequency bands.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: February 28, 2017
    Assignee: Inventus Holdings, LLC
    Inventors: Ann Frey, Frank Roark, Miguel Gonzalez, Daniel M. Brake
  • Patent number: 9567869
    Abstract: The invention relates to a method for detecting icing and other loadings on blades of wind turbines. Advantageously, the method utilizes existing wind turbine actuators, for example pitch actuators, far excitation of blade vibrations. Vibration sensors on the blade such as strain sensors or accelerometers measure the blade vibrations excited in response to the actively excised vibrations. By comparing the measured response with previously obtained reference responses, it is possible to determine if blade icing is present.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: February 14, 2017
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Steen M. Lauritsen, Erik Carl Lehnskov Miranda
  • Patent number: 9567978
    Abstract: A control system for a wind turbine includes a detecting system configured to determine at least one of a rotor load, a wind shear, a wind speed, and a load imbalance due to wind shear. An adjusting system is configured to adjust a shaft moment set point correction value based on at least one of the rotor load, the wind shear, the wind speed, and the load imbalance. A compensating system is configured to compute a shaft moment correction command based on the shaft moment set point correction value output from the adjusting system. A pitch system is configured to adjust a pitch of at least one blade of the wind turbine based on the shaft moment set point correction command, or a yaw system is configured to adjust the yaw position of a rotor based on the shaft moment set point correction command.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: February 14, 2017
    Assignee: General Electric Company
    Inventors: Monika Marwaha, Brandon Shane Gerber, Jignesh Govindlal Gandhi, Mark Edward Cardinal, Thomas Franklin Perley
  • Patent number: 9556850
    Abstract: A method of controlling a wind turbine rotor blade, the blade comprising a pitch axis about which the blade can be pitched, and a flap movable to alter the aerodynamic profile of the blade, the method comprising the steps of: providing a pitch angle request (?) to a pitch actuator; determining an initial flap angle request (?_flap); providing a decoupled flap angle request (?) to a flap actuator; herein the decoupled flap angle request (?) is calculated from the pitch angle request (?) and the initial flap angle request (?_flap) such that the decoupled flap angle (?) provided to the flap actuator does not counteract the pitch angle request (?); and pitching the blade according to the pitch angle request (?) and moving the flap according to the decoupled flap angle request (?).
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: January 31, 2017
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Jenny Goodman, Kelvin Hales
  • Patent number: 9523279
    Abstract: The present invention is directed to a rotor blade assembly for a wind turbine. The rotor blade assembly includes a rotor blade extending from a blade root to a blade tip. The rotor blade has a pressure side surface and a suction side surface. The pressure side surface and the suction side surface each extend between a leading edge and a trailing edge. The assembly also includes a blade root extension configured to attach to one of the pressure side surface or the suction side surface of the rotor blade adjacent to the blade root. The blade root extension includes at least one blade fence and at least one airflow modifying element. The blade fence extends between a proximal end and a distal end in a chord-wise direction. The proximal end is configured to attach to the rotor blade such that the distal end remains free and spaced apart from the rotor blade. The airflow modifying element is configured at the proximal end of the blade fence.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: December 20, 2016
    Assignee: General Electric Company
    Inventors: Stefan Herr, Biju Nanukuttan, Santhosha Yelwal Srikanta, Karthick Prabhu
  • Patent number: 9464626
    Abstract: A floating wind turbine (1) for electric power production and a method for use of the wind turbine (1) is described. The wind turbine (1) includes a hull (2) attached to a supporting column (2?) for a wind turbine (3) arranged to be put into rotation by wind force acting on rotor blades (3?). The wind turbine (1) is connected to a buoyancy device (4) by a coupling device (5). The buoyancy device (4) encircles at least a portion of the hull (2) and supports at least a portion of the mass of the wind turbine (1). The coupling device (5) is a rotary coupling arranged in such a way that the wind turbine (1) is able to rotate an angle from an essentially vertical position towards a horizontal position, or the opposite. The hull (2) is provided with an adjustable ballast (9, 12) arranged to balance the wind turbine (1) about the rotary coupling (5) in any position between the positions.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: October 11, 2016
    Assignee: Windel AS
    Inventor: Magne Tolo
  • Patent number: 9458729
    Abstract: An aircraft engine including: a stator; a main shaft; a first rotor; a second rotor; a transmission mechanism; a first electrical apparatus supported by the first rotor and a second electrical apparatus supported by the second rotor; at least one first field winding supported by the stator; a control unit configured to circulate direct electric current in the first field winding; at least one first armature winding supported by the first rotor and connected to the first electrical apparatus and at least one second armature winding supported by the second rotor and connected to the second electrical apparatus.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: October 4, 2016
    Assignee: LABINAL POWER SYSTEMS
    Inventors: Eric De Wergifosse, Cedric Duval
  • Patent number: 9459179
    Abstract: A method for monitoring a state of a drive train of a wind power plant. The drive train including at least one component which is mechanically connected to a rotating element of the drive train and at least one acceleration sensor connected to the rotating element and located at a distance from a rotational axis of the drive train. The at least one acceleration sensor is configured to rotate about the rotational axis of the drive train at the distance. A signal of the at least one acceleration sensor is sensed in terms of its timing at least one rotational speed of the rotating element and is examined for interference frequencies which correspond to damage in the drive train.
    Type: Grant
    Filed: October 13, 2012
    Date of Patent: October 4, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Daniel Brenner, Dirk Schollbach
  • Patent number: 9452831
    Abstract: An individual blade control system (IBCS) for a rotor system having a rotor hub is provided including a plurality of blade cuffs mounted to the rotor hub. Each blade cuff is configured to receive a rotor blade and rotate about a blade axis. A plurality of electrical actuators is mounted to the rotor hub adjacent at least one of the plurality of blade cuffs. Each electrical actuator is configured to rotate about an actuator axis. The plurality of blade axes and the plurality of actuator axes are arranged in a plane. Each electrical actuator is coupled to an adjacent blade cuff such that rotation of one of the plurality of electrical actuators causes a proportional rotation of one of the blade cuffs.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: September 27, 2016
    Assignee: SIKORSKY AIRCRAFT CORPORATION
    Inventors: Bryan D. Mayrides, William A. Welsh, Michael Joseph DeVita, Timothy Fred Lauder
  • Patent number: 9435214
    Abstract: A device for setting a turbomachine propeller blade is provided. The setting device includes a first disc and a second disc respectively provided with first and second coupling devices, the first and second discs being coaxial; and a system for tilting at least one of the first and second discs with respect to the other. During a tilting of at least one of the first and second discs with respect to the other, the coupling distance of the at least one blade on the first and second discs remains constant, bringing about the rotation of the at least one blade.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: September 6, 2016
    Assignee: SNECMA
    Inventors: Norman Jodet, Adrien Dubois, Rasika Fernando, Mathieu Gruber
  • Patent number: 9435320
    Abstract: Described embodiments include a wind turbine system. In this embodiment, the system includes a wind turbine including a rotor blade having a controllable feature and attached to a rotor hub drivingly coupled to an electric generator. The controllable feature is configured if activated to decrease a noise generated by the rotor blade and correspondingly to decrease electric power generated by the electric generator. The wind turbine system includes a sensor configured to detect a parameter indicative of present or possible future noise generation state of the rotor blade. The wind turbine system includes a noise manager circuit configured to select a noise mitigation measure responsive to the detected parameter and in compliance with a minimum electric power generation requirement assigned to the wind turbine. The wind turbine system includes a control circuit configured to activate the controllable feature in response to the selected noise mitigation measure.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: September 6, 2016
    Assignee: Elwha LLC
    Inventors: William David Duncan, Roderick A. Hyde, David B. Tuckerman, Lowell L. Wood, Jr.
  • Patent number: 9416666
    Abstract: The present application provides a turbine blade cooling system. The turbine blade cooling system may include a first turbine blade with a first turbine blade platform having a cooling cavity in communication with a pressure side passage and a second turbine blade with a second turbine blade platform having a platform cooling cavity with a suction side passage. The pressure side passage of the first turbine blade platform is in communication with the suction side passage of the second turbine blade platform.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: August 16, 2016
    Assignee: General Electric Company
    Inventor: Bradley Taylor Boyer
  • Patent number: 9342060
    Abstract: A method for controlling a gas turbine engine includes: generating model parameter data as a function of prediction error data, which model parameter data includes at least one model parameter that accounts for off-nominal operation of the engine; at least partially compensating an on-board model for the prediction error data using the model parameter data; generating model term data using the on-board model, wherein the on-board model includes at least one model term that accounts for the off-nominal operation of the engine; respectively updating one or more model parameters and one or more model terms of a model-based control algorithm with the model parameter data and model term data; and generating one or more effector signals using the model-based control algorithm.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: May 17, 2016
    Assignee: United Technologies Corporation
    Inventors: James W. Fuller, Ramesh Rajagopalan
  • Patent number: 9325218
    Abstract: A laminated rotor and an electric machine including the laminated rotor are disclosed. In an embodiment, a rotor comprises a plurality of stacked laminations, wherein each lamination includes a plurality of radially extending slots arranged about a circumference of each of the plurality of laminations, and the plurality of radially extending slots in successive laminations in the stack are aligned. A stud member passes longitudinally through at least one hole in the lamination stack, and a plurality of coils are positioned within the plurality of slots. Fewer than all of the plurality of slots have a coil positioned therein, leaving at least three slots empty. Balance members may be placed in the slots that do not have a coil positioned therein to balance the rotor.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: April 26, 2016
    Assignee: General Electric Company
    Inventors: Dmitry Yurevich Semenov, Anthony Salvatore Arrao, Mikhail Avramovich Avanesov, Richard Nils Dawson, Evgeny Victorovich Kazmin, Timothy Gerald Schmehl, Yury Danilovich Vinitsky
  • Patent number: 9306395
    Abstract: The present invention relates to a control system and an associated method for controlling an amount of reactive power delivered from a wind power plant to an associated power supply grid, the control system comprising a wind power plant controller and a number of wind turbine controllers each being in communication with said wind power plant controller, wherein the wind power plant controller is adapted to provide a grid voltage reference in response to a required total amount of reactive power to at least one wind turbine controller, said wind turbine controller comprising a voltage control loop comprising means for cancellation of a steady-state local voltage error.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: April 5, 2016
    Assignee: Vestas Wind Systems A/S
    Inventor: Jorge Martinez Garcia
  • Patent number: 9296487
    Abstract: A distributed heating system for a power train of a ram air turbine, which ram air turbine has a stowed position and a deployed position, has at least one electrical resistance heater element, with each electrical resistance heater element located proximate at least one respective lubrication surface for the power train; and an electrical controller for coupling electrical power to each electrical resistance heater element when the ram air turbine is in the stowed position and ambient temperature falls below a desired level.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: March 29, 2016
    Assignee: Hamilton Sunstrand Corporation
    Inventor: Michael E. Larson, Jr.
  • Patent number: 9284962
    Abstract: A vertical takeoff and landing aircraft includes rotors that provide vertical and horizontal thrust. During forward motion, the vertical lift system is inactive. A lift fan mechanism positions the fan blades of the aircraft in a collapsed configuration when the vertical lift system is inactive and positions the fan blades of the aircraft in a deployed configuration when the vertical lift system is active.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 15, 2016
    Assignee: Zee.Aero Inc.
    Inventors: Geoffrey A. Long, Rodin Lyasoff
  • Patent number: 9284050
    Abstract: A rotor blade for a rotary wing aircraft includes a root region extending from a rotor head to about 15% to 20% of a blade radius, a main region extending from a radial extent of the root region to about 80% to 95% of the blade radius, and a tip region extending from a radial extent of the main region to a blade tip. At least a portion of one of the root region, the main region and the tip region includes an airfoil profile section defined by a scaled set of coordinates in which a set of y/c coordinates listed in Table I are scaled by a selected factor.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: March 15, 2016
    Assignee: SIKORSKY AIRCRAFT CORPORATION
    Inventor: Ashish Bagai
  • Patent number: 9281112
    Abstract: The present invention describes methods to fabricate actuators that can be remotely controlled in an addressable manner, and methods to provide remote control such micro-actuators. The actuators are composites of two permanent magnet materials, one of which is has high coercivity, and the other of which switches magnetization direction by applied fields. By switching the second material's magnetization direction, the two magnets either work together or cancel each other, resulting in distinct “on” and “off” behavior of the devices. The device can be switched “on” or “off” remotely using a field pulse of short duration.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: March 8, 2016
    Assignee: Carnegie Mellon University, a Pennsylvania Non-Profit Corporation
    Inventors: Metin Sitti, Eric Diller, Shuhei Miyashita
  • Patent number: 9267491
    Abstract: A rotor blade for a wind turbine is disclosed. The rotor blade may generally include a shell having a pressure side and a suction side. The shell may define an outer surface along the pressure and suction sides over which an airflow travels. The rotor blade may also include a spoiler having a fixed end and a free end. The fixed end is connected to the outer surface so as to enable a hinge action, such as a living hinge. The free end includes a top flange and a bottom flange configured to engage opposite sides of the shell and is pivotal relative to the fixed end between a recessed position and an elevated position. The free end has a range of motion limited by contact of the top flange and the bottom flange with the shell. Further, the spoiler is configured to separate the airflow from the outer surface when the spoiler is in the elevated position.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: February 23, 2016
    Assignee: General Electric Company
    Inventors: Alexander William Vossler, Aaron A. Yarbrough, Christopher Daniel Caruso
  • Patent number: 9261076
    Abstract: A method for operating a wind turbine includes: providing a curve defining optimal pitch angle as a function of tip speed ratio or as a function of wind speed; modifying at least a part of the optimal pitch angle curve by applying a safety buffer, thereby obtaining a safety modified pitch angle curve; operating the wind turbine in accordance with the safety modified pitch angle curve; measuring one or more parameters regarding wind conditions and/or loads on one or more component of the wind turbine; adjusting the safety buffer, based on the measurements, thereby obtaining an adjusted pitch angle curve; and operating the wind turbine in accordance with the adjusted pitch angle curve. Since the safety buffer is adjusted based on measured parameters, it can be reduced if actual operating conditions are less severe than expected. This allows the wind turbine to be operated in a more optimal manner.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: February 16, 2016
    Assignee: Vestas Wind Systems A/S
    Inventors: Imad Abdallah, Erik Carl Lehnskov Miranda, Ali Zaib
  • Patent number: 9222465
    Abstract: In an embodiment of the invention, a non-rotating wind energy generator uses the fluid flow principles of vortex shedding and transverse galloping to generate oscillatory, linear motion of a beam, and linear alternators, optionally located near both ends of the beam, generate electrical power when the beam is in motion.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: December 29, 2015
    Assignee: Northeastern University
    Inventors: Dylan Thorp, Liam Byers, Mitchell Noah, Thomas Olsen, Evan Weiner, Mohammad Taslim
  • Patent number: 9200616
    Abstract: An automatic adjustment device for adjusting inclination of blades of wind turbines includes a first housing having multiple blades connected thereto and each blade has a first connection portion which is inserted into the firs housing. A transmission unit is connected to the first housing. A pump unit and a speed-changing member are mechanically connected to the transmission unit. The pump unit is mechanically connected to the speed-changing member. The pump unit has a driving unit which is connected with a transmission disk which is connected to the connection portions of the blades. The pump unit is activated by speed difference between the speed-changing member and the transmission unit so as to rotate the transmission disk via the driving unit, and adjust the inclination angle of the blades to protect the blades and increase the efficiency of the wind turbine.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: December 1, 2015
    Assignee: Kun Shan University
    Inventor: Shueei-Muh Lin
  • Patent number: 9181925
    Abstract: The invention concerns a method for the determination of an azimuth angle for servicing purposes (?w) of a wind power plant with a machinery housing that is rotatable on a tower through an azimuth angle (?) and a rotor that is rotatable on a machinery housing through a rotor angle (?) such that a plurality of combinations of rotor angles (?) and azimuth angles (?) is adjusted, that are determined at the rotor subject to the influence of a turbulent wind field, which is effecting torques, for the adjusted combinations of rotor angles (?) and azimuth angles (?) and the associated azimuth angle (?), a torque envelope of the torque-azimuth angle associations is determined, surrounding areas (U(?)) with comparable sector sizes of the azimuth angle (?) are generated and associated magnitude values of the torque envelope are determined, a surrounding area (U(?w)) with magnitude-wise smaller torque envelope values than the neighboring surrounding areas is selected and the azimuth angle for servicing purposes (?w) is
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: November 10, 2015
    Assignee: R E power Systems AG
    Inventors: Martin von Mutius, Dirk Steudel
  • Patent number: 9133828
    Abstract: A method for determining a mass change at a rotating blade of a wind turbine is provided. The method includes measuring a vibration quantity representative of a vibration of the wind turbine, measuring an azimuthal quantity representative of a rotation angle of the blade, determining a frequency quantity representative of a vibration frequency of the blade from the vibration quantity and the azimuthal quantity, and determining the mass change at the blade based on the frequency quantity.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: September 15, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Per Egedal, Hans Laurberg
  • Patent number: 9114875
    Abstract: A lead lag damper (10, 11) for a helicopter rotor unit has a rotor and a hub (8), said rotor having N rotor modes, with N being the number of blades. This centered single lead lag damper (10, 11) for the entire rotor unit has an essentially cylindrical shape, with an elastomer material shear element between a first side (7) and a second side (9) having a homogenous resistance to shear deformation and being axially preloaded, so that the lead lag damper (10, 11) acts in a homogenous manner in the rotor inplane eigenmodes. Thus, the lead lag damper (10, 11) acts as a single unit on the critical inplane mode of the rotor, which is having N identical blades (1-4). The elastomeric material is loaded by a uniform shear deformation in contrary to the commonly used oscillatory deformation.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: August 25, 2015
    Assignee: Airbus Helicopters Deutschland GmbH
    Inventors: Bernard Enenkl, Rupert Pfaller
  • Patent number: 9109578
    Abstract: A root extender for coupling a rotor blade to a hub of a wind turbine is disclosed. The root extender may generally include a body defining a longitudinal axis between a first end and a second end. The first end may define a first planar surface configured to be positioned adjacent to the hub and the second end may define a second planar surface configured to be positioned adjacent to the rotor blade. The second planar surface may be oriented at a cone angle relative to the first planar surface. In addition, the longitudinal axis may be oriented at a non-perpendicular angle relative to the first planar surface.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: August 18, 2015
    Assignee: General Electric Company
    Inventors: Eric Morgan Jacobsen, Bart Jan Veldkamp
  • Patent number: 9074583
    Abstract: A method for operating a wind energy installation (10) with a rotor (12) and at least one rotor blade (14), which can be adjusted in terms of its angle of attack. The rotor blade (14) is accelerated by virtue of at least five repeated adjustment operations of the angle of attack about its longitudinal axis (15), wherein a rotor blade bending vibration with a vibration amplitude and a vibration frequency is excited.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: July 7, 2015
    Assignee: SENVION SE
    Inventor: Martin Von Mutius
  • Publication number: 20150147174
    Abstract: The present invention relates to methods, apparatus and computer program products for coordinating the control of a floating wind turbine (101) between a wind turbine controller (111) and a platform controller (110). One or more wind turbine control systems and/or one or more platform control systems may be altered based on 102 said coordinated control of said floating wind turbine (101).
    Type: Application
    Filed: January 9, 2013
    Publication date: May 28, 2015
    Applicant: MHI VESTAS OFFSHORE WIND A/S
    Inventors: Ian Couchman, Robert Bowyer
  • Publication number: 20150145253
    Abstract: The invention is a method for controlling and/or monitoring a wind turbine 1 equipped with a LIDAR sensor 2. Control and/or monitoring provides an estimation of the wind speed at the rotor obtained an estimator and a LIDAR sensor 2. The estimator of the wind speed at the rotor is constructed from a representation of the wind, a model of the LIDAR sensor and a wind propagation model.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 28, 2015
    Inventors: Benoit BAYON, Jonathan CHAUVIN
  • Publication number: 20150147175
    Abstract: The invention concerns a wind power installation comprising a pod, a rotor, a first and/or second microwave technology and/or radar technology measuring unit for emitting microwaves and/or radar waves and for detecting the reflections of the microwaves and/or radar waves to acquire wind data and/or meteorological data or information in respect of a wind field in front of and/or behind the wind power installation, and a control means of the wind power installation, which controls operation of the wind power installation in dependence on the data detected by the first and/or second measuring unit.
    Type: Application
    Filed: June 11, 2013
    Publication date: May 28, 2015
    Applicant: Wobben Properties GmbH
    Inventors: Jurgen Stoltenjohannes, Werner Hinrich Bohlen, William Meli
  • Publication number: 20150147172
    Abstract: A system and method for preventing a rotor blade from striking a tower of the wind turbine is disclosed. The system includes a pitch adjustment mechanism, at least one electrical switch, and a mechanically-actuated positional switch. The pitch adjustment mechanism is configured to rotate the rotor blade about a pitch axis. Further, the pitch adjustment mechanism includes a motor and a brake. The electrical switch is configured with the motor, the brake, or both. The mechanically-actuated positional switch is fixed within a hub of the wind turbine. Further, the positional switch is configured with the electrical switch such that if the rotor blade rotates to an unsafe region, the positional switch is configured to trigger the electrical switch to implement one of tripping power to the motor of the pitch adjustment mechanism or actuating the brake of the pitch adjustment mechanism.
    Type: Application
    Filed: November 22, 2013
    Publication date: May 28, 2015
    Applicant: General Electric Company
    Inventor: Joseph Lawrence Chacon
  • Publication number: 20150147173
    Abstract: A wind turbine system is presented. The wind turbine system includes a wind turbine comprising a plurality of blades and a tower, and a processing subsystem configured to shut down the wind turbine by non-linearly pitching out the plurality of blades in the wind turbine towards a feather position at a pitch rate determined based upon a tower-fore-aft velocity of a top-portion of the tower during oscillations of the tower.
    Type: Application
    Filed: November 25, 2013
    Publication date: May 28, 2015
    Applicant: General Electric Company
    Inventor: Pranav Agarwal
  • Patent number: 9039366
    Abstract: The invention involves a wind turbine comprising at least one blade (5) in turn comprising a blade body (501), lift-regulating means (502) adapted for movement in relation to the blade body (501) so as to regulate the lift of the blade, and load sensing means (5022, 506) for determining a load acting on the lift-regulating means (502), the wind turbine further comprising an actuation control unit (6) adapted to control the movement of the lift-regulating means (502) based on output from the load sensing means (5022, 506). In addition to output from the load sensing means (5022, 506), the actuation control unit (6) is adapted to control the movement of the lift-regulating means (502) based on the movement of the lift-regulating means (502).
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: May 26, 2015
    Assignee: Vestas Wind Systems A/S
    Inventors: Tim Behrens, Li Hong Idris Lim, Tian Lim, Chee Kang Lim, Teck Bin Arthur Lim, Kok Leong Chong, Whye Ghee Kim, Yun Chong Gabriel Chang, Loh Wuh Ken