Wind Patents (Class 290/55)
  • Patent number: 10823150
    Abstract: A connecting structure for a steel tube truss and a tower barrel of a lattice wind power generation tower, a prestressed polygon wind tower provided with a circular box girder for a direct fan on the top of the tower, a wind power generation tower, and a wind tower having a prestressed anti-fatigue structure, which relate to the technical field of wind power generation towers, can simplify the connection mode between the tower barrel and the lattice tower frame, resolve the stress problem, enable the force transmission of a transition section to be direct and save materials.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: November 3, 2020
    Assignee: QINDAO HUA-STRONG ENERGY TECHNOLOGY CO., LTD.
    Inventors: Tonghua Wang, Zhaohua LV
  • Patent number: 10826306
    Abstract: A method for monitoring a bank of ultracapacitors configured to power an alternating current (AC) pitch motor of a pitch system in a wind turbine is provided. The method includes obtaining, by one or more control devices, data indicative of a voltage associated with the bank of ultracapacitors. The method includes conducting, by the one or more control devices, a test operation of the bank of ultracapacitors at predetermined intervals of time to determine a capacitance associated with the bank of ultracapacitors. The method further includes performing, by the one or more control devices, one or more control actions based, at least in part, on the capacitance or the data indicative of the voltage.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: November 3, 2020
    Assignee: General Electric Company
    Inventors: Robert Gregory Wagoner, Jeffrey Alan Melius, Christopher Lee Tschappatt
  • Patent number: 10801474
    Abstract: An embodiment includes sensor data representative of an amount of gas in a storage tank and a speed of wind driving a wind turbine. The embodiment also includes identifying a favorable capacity condition of the storage tank by comparing the amount of gas in the storage tank to the tank's capacity. The embodiment further includes identifying a favorable wind condition by comparing the wind speed to a cut-in speed of the wind turbine. In addition, the embodiment includes receiving wind direction data indicating a direction of the wind driving the wind turbine and identifying a valve position update for a valve that controls gas flow from the tank towards the wind turbine. Finally, the embodiment includes instructing the valve according to the valve position update.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: October 13, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sandeep Sukhija, Bryan Sacks, Deepak Bajaj, Harish Bharti
  • Patent number: 10795054
    Abstract: A wind flow sensing system determines a first approximation of the velocity field at each of the altitudes by simulating computational fluid dynamics (CFD) of the wind flow with operating parameters reducing a cost function of a weighted combination of errors, determines a horizontal derivative of vertical velocity at each of the altitudes from the first approximation of the velocity fields, and determines a second approximation of the velocity fields using geometric relationships between a velocity field for each of the altitudes, projections of the measurements of radial velocities on the three-dimensional axes, and the horizontal derivative of vertical velocity for the corresponding velocity field. In the cost function of the CFD, each error corresponds to one of the altitudes and includes a difference between measured velocities at the line-of-site points at the corresponding altitude and simulated velocities at the line-of-site points simulated by the CFD for the corresponding altitude.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: October 6, 2020
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Saleh Nabi, Piyush Grover, Mithu Debnath
  • Patent number: 10794198
    Abstract: A clip for attachment as an edge. The clip having two symmetric sides, each side composed of five arcs. A first arc of the side starting at the midpoint of the nose having a radius of 0.2476 inches and an arc length of 0.22395 inches. A second arc connected to the first arc having a radius of 0.5832 inches and an arc length of 0.0947 inches. A third arc connected to the second arc having a radius of 0.4636 inches and an arc length of 0.1682 inches. A fourth arc connected to the third arc having a radius of 0.3822 inches and an arc length of 0.2263 inches. A fifth arc connected to the fourth arc having an arc having a radius of 0.3291 inches and an arc length of 0.1917 inches. The fifth arc of each side forming the slot end on the clip.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: October 6, 2020
    Inventor: David A. Shoffler
  • Patent number: 10790724
    Abstract: An electrical energy generator array generates electricity from at least one form of natural flow, the generator having a drive shaft driven by energy from a natural energy flow and connected to a drive mechanism. The generator includes an integrated electric motor and a plurality of individual generators disengageably connected to the drive mechanism. Each generator is connected via a series of ties to form a connected generator array, the array being rotated by the drive mechanism when connected thereto, or by the integrated electric motor when disconnected from the drive mechanism, to generate electricity. The generator may include an electrical storage device arranged to power the integrated electric motor. A method of generating electricity from at least one natural energy flow, for supply to an electrical storage device, for local use or for supply to an electric grid includes using an electrical energy generator array as described.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: September 29, 2020
    Inventor: Christopher John Anthony Coman
  • Patent number: 10790769
    Abstract: Provided are a control method and system for enhancing an endurance capability to an abnormal voltage of a wind turbine generator system. The control method, includes; providing a doubly-fed wind turbine generator system connected to a power grid; detecting a voltage of the power grid, and determining whether the voltage of the power grid has a fault; when the voltage of the power grid has a fault, detecting a voltage of the DC buses, and determining whether the voltage of the DC buses exceeds a limit value; when the voltage of the DC buses exceeds the limit value, performing integrated system coordination control according to an abnormal operating condition mode; and when the voltage of the power grid returns to a normal range, performing integrated system coordination control according to a normal operating condition mode.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: September 29, 2020
    Assignees: Wind Power Technology Center of Gansu Electric Power Company, State Grid Corporation of China, Gansu Electric Power Company of State Grid, Shanghai Jiao Tong University
    Inventors: Ningbo Wang, Liang Lu, Kun Ding, Shiyuan Zhou, Chen Zhang, Jin Li, Zheng Li, Nianzong Bai, Jing Zhi, Xu Cai, Youming Cai
  • Patent number: 10781797
    Abstract: The invention relates to a wind turbine comprising a plurality of individual yaw bearing units and a method of replacing a pad of such a yaw bearing unit. The yaw bearing unit comprises a caliper structure divided into an upper portion and a lower portion, wherein the lower portion can be dismounted without also dismounting the upper portion. An upper pad is provided between a flange providing support for a nacelle and a mainframe of the nacelle. A radial pad is arranged on a radial surface of the upper portion and contacts a stop element located at either ends of the upper portion. An adjustable lower pad is arranged in a through hole in the lower portion and can be replaced via a lower opening in the lower portion. The radial pad can be replaced in a sideward direction by removing one of the stop elements or replacing it in an axial direction by removing the lower portion.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: September 22, 2020
    Assignee: Envision Energy (Denmark) ApS
    Inventor: Carsten Bendix Sørensen
  • Patent number: 10774807
    Abstract: Omni M-VAWT is built upon and modified from Original M-VAWT to be omni directional to wind. Original M-VAWT, or Original Multi Axes-Vertical Axis Wind Turbine, is documented in U.S. Pat. No. 10,473,087 Patent granted on Nov. 12, 2019. Omni M-VAWT has significant improvements on power generation performances by having a new planet airfoil rotation and alignment assembly, a modified airfoil assembly, and the removal of Original M-VAWT mechanisms for orienting and pointing its planet airfoils persistently forward facing toward the wind. The new planet airfoil rotation and alignment assembly rotates planet airfoils fully extended and folded in rotations around their planet rotating shafts, either passively or actively within rotation limits. A modified airfoil assembly has particular modifications to shapes and sizes and rotation centers for paired planet and sun airfoils. Omni M-VAWT remains environmentally friendly to flying birds.
    Type: Grant
    Filed: August 5, 2018
    Date of Patent: September 15, 2020
    Inventor: George Pul
  • Patent number: 10774811
    Abstract: A wind turbine includes a wind turbine rotor and rotor blades mounted on the rotor, at least one sensing device disposed on the wind turbine for measuring a first signal representative of a first wind speed at a first distance from the wind turbine rotor and a second signal representative of a second wind speed at a second distance from the wind turbine rotor. The wind turbine system includes a blade pitch actuator for adjusting a pitch of the rotor blades and a generator controller for adjusting a voltage of a wind turbine generator. The wind turbine system also includes a control unit in communication with the blade pitch actuator and the generator controller, the control unit being used for controlling the wind turbine via the blade pitch actuator and the generator controller based on an induction factor derived from the first and second signals.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: September 15, 2020
    Assignee: General Electric Company
    Inventors: Samuel Davoust, Thomas Stephen Markham, Pranav Agarwal
  • Patent number: 10776660
    Abstract: A method and apparatus for inspecting utility scale wind turbine generator blades from the ground includes a digital camera and an adjustable polarizing filter on a stable platform. The camera is used to record multiple digital images with varying polarization angles using an artificial polarized or polarized solar illumination to produce images with the same or similar registration but different polarization angles, followed by image processing using subtraction or absolute difference routines to yield high resolution, high contrast images with reduced glare and excellent surface definition over the field of view.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: September 15, 2020
    Assignee: General Electric Company
    Inventor: John W. Newman
  • Patent number: 10767630
    Abstract: A method for operating a wind farm connected to a power grid that demands a reactive power requirement that varies with active power includes monitoring a wind speed at each of the plurality of wind turbines in the wind farm. When the wind speed is within a cut-in wind speed range, the method includes determining a reactive power margin of the wind farm based on the reactive power requirement at an active power output corresponding to the wind speed and a reactive power availability of each of the plurality of wind turbines at the wind speed. The method also includes determining a lowest possible cut-in rotor speed for each of the plurality of wind turbines that satisfies the reactive power margin. Further, the method includes commanding each of the plurality of wind turbines to cut-in and begin to produce power at the lowest possible cut-in rotor speed that satisfies the reactive power margin.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: September 8, 2020
    Assignee: General Electric Company
    Inventors: Vaidhya Nath Venkitanarayanan, Patrick Hammel Hart, Alina Fatima Moosvi, Charles Joseph Kosuth, Enno Ubben, Alev Akbulut
  • Patent number: 10753343
    Abstract: The invention relates to a heat exchanger for an electrical machine. The heat exchanger comprises a housing and a tube bundle. The tube bundle comprises a plurality of tubes within the housing extending between a first end and a second end of the housing in the direction of the length of the heat exchanger. The housing comprises a top wall, end walls extending in the direction of the width of the heat exchanger and first and second side walls extending in the direction of the length of the heat exchanger and a bottom frame. Between a first side wall of the housing and a side of the tube bundle is a mounting space for receiving one or more cooling fluid circulating devices.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: August 25, 2020
    Assignee: ABB Schweiz AG
    Inventors: Matti Halme, Martti Toivonen, Hannu Kurkinen, Veikko Haverinen
  • Patent number: 10750579
    Abstract: An induction heating device includes: a rotor having a rotation shaft; a heating part disposed to be opposed to the rotor at a distance; a magnetic flux generating part provided at the rotor to generate magnetic flux for the heating part; a magnetic flux guide part provided on an opposed surface side of the heating part that is opposed to the magnetic flux generating part to guide the magnetic flux from the magnetic flux generating part to the heating part; and a flow passage provided in the heating part to allow a heating medium to circulate. The magnetic flux guide part includes magnetic substance parts. The magnetic flux guide part has a structure in which the magnetic substance parts and the insulator parts extend along a direction from the magnetic flux generating part to the heating part and are alternately layered along a circumferential direction of the heating part.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: August 18, 2020
    Assignees: Sumitomo Electric Industries, Ltd., Kyoto University
    Inventors: Toru Okazaki, Tetsuji Matsuo
  • Patent number: 10745102
    Abstract: An aerial vehicle having an arm for supporting an a lift generating means, the aerial vehicle being advantageously a multicopter, comprising an arm mount means for swinging an arm supporting the lift generating means between a retracted position and an extended locked and releasable position.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: August 18, 2020
    Assignee: GRIFF AVIATION AS
    Inventors: Jan Martin Nysæter, Hans Petter Førde, Leif Johan Holand
  • Patent number: 10738764
    Abstract: A horizontal axis wind turbine which includes a plurality of blades that rotate at relatively low rpms and produce a high torque to rotate a generator is described. The wind turbine provides more power at low to moderate wind speeds than conventional wind turbines, produces more power at low wind speeds while still operating at high wind speeds, begins generating power at very low wind speeds, produces less noise, and reduces animal (e.g., bird and bat) collisions. The method determines the number of blades for the wind turbine based upon the desired rpm for the wind rotor and the generator configuration is based upon the estimated torque generated by the number of blades.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: August 11, 2020
    Assignee: Star Wind Turbines LLC
    Inventor: Jason Day
  • Patent number: 10738760
    Abstract: The present invention is a vertical axis wind turbine contained in a housing designed to introduce turbulent flow to increase efficiency. One embodiment of the invention uses a three bladed propeller with deflectors mounted upstream of the propeller to increase the pressure on the trailing edge of the blades. In another embodiment, an electric generator is coupled to the vertical axis wind turbine to convert the kinetic energy of a moving fluid into electricity.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: August 11, 2020
    Inventor: Catalin Tutunaru
  • Patent number: 10726168
    Abstract: The present invention relates to the field of reliability-based structural design optimization, and provides an integration method for accurate modeling and analysis and reliability-based design optimization of variable stiffness composite plate and shell structures. In this method, the first-order reliability method, two-point adaptive nonlinear approximation and second-order reliability method are applied into the efficient reliability-based design optimization of variable stiffness composite plate and shell structures. The fiber placement path of variable stiffness composite plate and shell structures is accurately modeled by non-uniform rational B-spline function. Isogeometric analysis is utilized for the variable stiffness composite plate and shell structures, including conducting linear buckling analysis on the variable stiffness composite plate and shell structures based on the isogeometric analysis method and deriving analytical sensitivity of design and random variables on the structural response.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: July 28, 2020
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Hao Peng, Wang Yutian, Liu Chen, Yuan Xiaojie, Wang Bo, Liu Hongliang, Yang Dixiong, Li Gang, Wang Bin, Jiang Liangliang
  • Patent number: 10710716
    Abstract: Devices for inhibiting a cable coupling drones from being entangled in the propellers of the drones, and associated systems and methods, are described herein. For example, a device can include a first weight coupled to the cable and configured to direct the cable at least partially away from the propellers of the drones. In some embodiments, the first weight can be coupled to the cable proximate to one of the coupled drones, and the device can include a second weight coupled to the cable proximate to the other of the coupled drones and configured to direct the cable at least partially away from the propellers of the drones.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: July 14, 2020
    Assignee: T-Mobile USA, Inc.
    Inventor: Christopher Wieczorek
  • Patent number: 10711762
    Abstract: Systems can be used to harness energy from winds. For example, this document describes scalable systems having multiple wing-like blades that can efficiently convert wind power into electricity and other types of energy.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: July 14, 2020
    Assignee: JMCC Wing, LLC
    Inventor: James McCanney
  • Patent number: 10707790
    Abstract: The present electric power generation control device includes: an event detection unit which detects an event attributable to a deterioration in the balance between a torque input to a generator and an effective power output by the generator, the deterioration being caused by a reduction in a set value of the effective power received from the generator by an electric power converter when the electric power converter has detected a failure necessitating interruption of electric power transmission from the generator by a direct-current (DC) power transmission unit, the DC power transmission unit transmitting DC power, the electric power converter connecting a generator to the DC power transmission unit; and a torque command reduction unit which causes a reduction in a torque command to a motor when the event detection unit has detected the event attributable to the deterioration in the balance, the motor outputting the torque input to the generator.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: July 7, 2020
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masayuki Hashimoto, Tsuyoshi Wakasa, Yoshiyuki Kono, Shuhei Fujiwara
  • Patent number: 10697436
    Abstract: A wind power plant includes a plurality of wind turbine systems arranged in rows and columns and includes a cable support system with at least one cable. The cable is coupled to the support structure above the first wind turbine and below the second wind turbine. The cable couples directly adjacent wind turbine system together. The cable may extend the entire length of at least one row or at least one column. A wind turbine system includes a plurality of wind turbines and a support structure including a tower and support arms. The cable support system that is coupled to the wind turbine system and that is configured to transfer loads on the wind turbine system to other wind turbine systems in the wind power plant.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: June 30, 2020
    Assignee: Vestas Wind Systems A/S
    Inventors: Torben Ladegaard Baun, Henrik Kudsk, Jesper Lykkegaard Neubauer
  • Patent number: 10697424
    Abstract: A multirotor wind turbine (1) comprising a tower structure (2) and at least one load carrying structure (3, 4), each load carrying structure (3, 4) being arranged for carrying two or more energy generating units (5, 7) comprising a rotor (6, 8). At least two of the rotors are upwind or downwind rotors (6), the energy generating units (5) comprising upwind or downwind rotors (6) being arranged with their centres of gravity at a first distance behind the tower structure (2) along a direction of the incoming wind, substantially at the same vertical level, and at opposite sides of the tower structure (2) at substantially the same second distance to the tower structure (2) along a direction substantially perpendicular to the direction of the incoming wind. The multirotor wind turbine (1) is self-yawing, even under turbulent wind conditions.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: June 30, 2020
    Assignee: Vestas Wind Systems A/S
    Inventors: Peter Bjørn Andersen, Jonas Lerche Schomacker, Anurag Gupta, Henrik Kudsk
  • Patent number: 10683846
    Abstract: A method for controlling at least one wind power installation for generating electrical energy from wind for infeed into an electrical supply network is provided. The wind power installation has a rotor that can be operated at a variable rotor rotational speed and rotor blades having adjustable blade angles and coupled to the aerodynamic rotor, for generating a generator power. The wind power installation is operated in a normal mode in which it feeds available wind power up to a rated power into the network and the available wind power indicates a power which can be obtained from the wind and fed into the network depending on the wind and technical limitations of the wind power installation. The wind power installation changes from the normal mode to a support mode depending on an operating situation of at least one solar installation which feeds into the same network.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: June 16, 2020
    Assignee: Wobben Properties GmbH
    Inventors: Johannes Brombach, Katharina Schubert
  • Patent number: 10677218
    Abstract: Embodiments of the present invention relate to control of a wind turbine during a recovery period after a grid fault. It is disclosed to operate a wind turbine during the recovery period to determine the actual pitch angle of the rotor blades and the actual wind speed, and based on that determining a desired pitch angle of the rotor blades, as well as a pitch ramp rate so that the actual pitch angle can be brought to match the desired pitch angle before the end of the recovery period. In embodiments, the steps performed in the recovery mode are repeated at intervals during the recovery period.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: June 9, 2020
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Martin Ansbjerg Kjær, Kasper Zinck Ostergaard, Jan Graugaard-Jensen
  • Patent number: 10655598
    Abstract: A high efficiency vertical axis wind turbine (VAWT) comprising two counter-rotating rotors, each comprising a plurality of straight rotor blades. One rotor is placed on a first vertical axis and another rotor is placed on a second vertical axis. The first vertical axis and the second vertical axis are positioned on a support structure extending there between. The support structure, and the first vertical axis of rotation and second vertical axis of rotation, can rotate about an intermediate axis of rotation, which is placed at a midpoint between the first vertical axis of rotation and second vertical axis of rotation. An angled deflector is mounted to the frame at or about the intermediate axis of rotation. During operation, the vertex of the deflector is positioned toward oncoming wind. The deflector comprises two symmetrical deflecting surfaces that extend from the vertex to the rotors. One or more vortex generators are positioned on each deflecting surface.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: May 19, 2020
    Assignee: City University of Hong Kong
    Inventors: Heung Fai Lam, Hua Yi Peng
  • Patent number: 10658843
    Abstract: In accordance with some embodiments, the present disclosure is directed to systems having a fuel cell and a turbine generator, each capable of providing electrical power to a utility grid, and methods for operating the same. The system may have a main AC bus which is coupleable to the utility grid. The fuel cell may be coupled to main AC bus through an inverter. The turbine generator may be coupled to the main AC bus through a series of inverters, one of which may include the inverter by which the fuel cell is connected to the main AC bus. One or more load banks may be provided to provide a load for electrical power generated from the fuel cell, turbine generator, or both in case the system is disconnected from the utility grid. Further support and backup systems may be provided.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: May 19, 2020
    Assignee: Rolls-Royce plc
    Inventors: Gerard Daniel Agnew, David Silveira Erel, Jaeyoo Yoo, Joseph J. Romayo, Jinha Lee
  • Patent number: 10648450
    Abstract: This invention discloses an improved wind turbine suitable for mounting without a wind turbine tower. The wind turbine is based on a rotor with appropriately selected blades. A nozzle and diffuser in the wind flow increase the amount of wind energy available to the rotor. The rotor is interruptibly connected with one or more of a plurality of generators which allows generation at a wide range of wind speeds. The rotor is also interruptibly connected with a co-axial flywheel which allows for storage or use of rotational energy as needed by the availability of wind energy. One or more wind turbines can be grouped together in a common housing. Electricity can also be generated by means of stored energy or other motive source. The lack of a wind turbine tower and the general compact design allows the wind turbine to be used in close proximity to or on buildings.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: May 12, 2020
    Inventor: Peter K. O'Hagan
  • Patent number: 10637248
    Abstract: A wind turbine includes a wind rotor, a generator, and a converter. The generated electric power is fed from the converter by means of a feed to a turbine transformer for delivery to a grid. The feed is designed as a double branch including a power-branched power circuit breaker unit having a first feed line and a second feed line connected in parallel, wherein a separate low-voltage winding of the turbine transformer and a separate power circuit breaker at the connector of the converter is associated with each feed line.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: April 28, 2020
    Assignee: SENVION GmbH
    Inventor: Heinz-Hermann Letas
  • Patent number: 10633063
    Abstract: A barge for renewable energy recourses is disclosed that comprises a plurality of horizontal axis wind turbines, a plurality of photovoltaic panels; and a plurality of sea-wave generators. The energy harvested by the renewable energy recourses is transformed to electrical energy and the electrical energy is transmitted to a grid onshore. A fleet of a plurality of barges located in deep waters is disclosed as well.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: April 28, 2020
    Assignee: NEPTUNETECH LTD
    Inventors: Michael Burt, Yehiel Rosenfeld
  • Patent number: 10630100
    Abstract: A mobile electricity generator comprising a movable solar panel assembly that may be stored in the base and deployed to a use position is provided. The solar panel assembly includes a plurality of solar panels that slide relative to one another between deployed and collapsed positions. The solar panels may be actuated to track a solar energy source. The mobile electricity generator can further comprise a battery in electric communication with the solar panels for storing the electricity.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: April 21, 2020
    Inventor: George A. Van Straten
  • Patent number: 10622923
    Abstract: A method is provided of controlling a doubly fed induction generator—(DFIG) wind turbine converter system if a sub-synchronous resonance event acts on the wind turbine. According to the method a sub-synchronous resonance event is detected. Thereupon, a switch from a non-SSR-control mode to a SSR-control mode is performed. At least one of the following activities is performed in the SSR-control mode, namely: (i) freezing rotor AC voltages in magnitude and phase, (ii) altering at least one rotor-current-controller gain (iii) altering at least one rotor-current-controller time constant, to dampen the effect of the SSR-event on the wind turbine.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: April 14, 2020
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Gert Karmisholt Andersen, Ciprian Biris, Yi Zhou, Manoj Gupta, Vajira Suminda Ganepola, Uffe C. Merrild
  • Patent number: 10612522
    Abstract: There is provided a hybrid turbine system comprising a plurality of flexible and thin film photovoltaic modules or panels attached to a plurality of blades of a vertical-axis wind turbine (VAWT) for energy generation. Electrical performance of rotating photovoltaic modules or panels is enhanced since rotating photovoltaic modules are self-cooled by rotation of the blades of the wind turbine. It is experimentally shown that voltage of the photovoltaic modules decreases when the photovoltaic modules' temperature increases, and this decrease was modelled by four parameters namely ideality factor, reverse saturation current, short-circuit current, and material band gap. The present invention evidences that the proposed rotating photovoltaic modules increases the output voltage of the photovoltaic modules.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: April 7, 2020
    Assignee: Abu Dhabi University
    Inventors: Anas I. Q. Al Tarabsheh, Muhammad Abdul Majeed Hareb, Mahmoud Raouf Kahla
  • Patent number: 10615720
    Abstract: The present disclosure provides a power generator, its manufacturing method, and an electronic device utilizing the power generator as its power source. The power generator includes a deformation unit and a piezoelectric unit. The deformation unit is coupled to the piezoelectric unit; and the deformation unit comprises a conductive polymer, which is configured to deform upon contacting moisture to thereby apply a mechanical force to the piezoelectric unit to thereby generate electricity.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: April 7, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jiuxia Yang, Feng Bai
  • Patent number: 10605234
    Abstract: A wind turbine with nacelle includes an electrical generator, a cooling circuit including at least two cooling fans for channeling a fluid cooling medium from the electrical generator to an outer wall of the nacelle and a draining device for channeling drainage water from the cooling fans to an outer wall of the nacelle. The draining device includes at least a first draining portion connecting the cooling fans to an inside of the nacelle and at least a second draining portion for receiving drainage water from the first respective draining pipe and channeling the drainage water to the outer wall of the nacelle.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: March 31, 2020
    Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
    Inventor: Giovanni Airoldi
  • Patent number: 10598156
    Abstract: A wind-driven power generating system with a hybrid wind turbine mounted on a floating platform that heels relative to horizontal in the presence of a prevailing wind. The hybrid turbine has a turbine rotor with at least two rotor blades, each mounted to a turbine shaft by at least one strut, and the system is configured so that the shaft forms a predetermined non-zero operating heel angle relative to vertical in the presence of a prevailing wind at a predetermined velocity. The blades and struts are airfoils with predetermined aerodynamic characteristics that generate lift forces with components in the direction of rotation around the shaft of the blades and struts at the operating heel angle to drive an electrical generator carried by the platform. The system can be designed to generate maximum power at the predetermined heel angle or essentially constant power over a range of heel angles.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: March 24, 2020
    Assignee: CONTINUUM DYNAMICS, INC.
    Inventors: Glen R. Whitehouse, Alan J. Bilanin, Alexander H. Boschitsch, Daniel A. Wachspress
  • Patent number: 10577820
    Abstract: The invention relates to a tower section and to a method for raising said section with a complete new or existing wind turbine on the upper part thereof, the assembly being raised to heights greater than 120 meters by means of a raising system that operates at ground level and gradually inserts modular frame structures through the lower part. The modules have heights between 10 and 14 meters and are formed by a trellis of at least three vertical columns and with diagonal elements which react to the twisting moments and shear forces generated by the action of the wind. A transition part with a base sufficient for raising in wind conditions greater than 15 meters/second is disposed on top of the modules.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: March 3, 2020
    Assignee: NABRAWIND TECHNOLOGIES SL
    Inventors: Ana Cristina García Perez, Ion Arocena De La Rúa, Eneko Sanz Pascual, Hely Ricardo Savii Costa
  • Patent number: 10570886
    Abstract: The invention concerns an airborne device comprising at least three supporting wings and a linking device, the wings being linked to each other by first flexible cables, each wing being further linked to the linking device by a second flexible cable, the linking device being linked to a third flexible cable intended to be linked to a base, the first second, and third cables being tensioned when the airborne device is carried in the wind.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: February 25, 2020
    Assignee: Institut Polytechnique de Grenoble
    Inventor: Rogelio Lozano
  • Patent number: 10570880
    Abstract: A wind turbine system comprising a plurality of wind turbine modules mounted to a support structure, wherein each of the wind turbine modules comprises a rotor including one or more variable-pitch blades, each defining a respective blade pitch angle and being controlled by a pitch control system, and a control system operable to control the blade pitch angles of the plurality of blades of the wind turbine modules. The control system is configured to identify the presence of a predetermined stop condition and, in dependence thereon, is operable to control the blade pitch angles of the respective blades to predetermined stop positions that reduce oscillation of the support structure. Aspects of the invention also relate to a method of controlling a wind turbine system, to a controller for implementing the method, and to a computer program product.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: February 25, 2020
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Torben Ladegaard Baun, Jesper Lykkegaard Neubauer
  • Patent number: 10563637
    Abstract: A Twin M-VAWT of the present invention combines two counter-rotating M-VAWTs, each of which is a multi axes wind turbine disclosed and documented in patent application Ser. No. 15/790,004 filed on Oct. 22, 2017, for improved flexibility in paired planet and sun airfoils shapes and sizes, and for improved power generating performances. Two counter-rotating M-VAWTs are clocked mirror images of one another, where one M-VAWT is a mirror image of the other one before their relative orientations are rotated or clocked from one another; they are located in close proximity to one other; and they cooperate and interact with one another; and with added flexibility in paired planet and sun airfoils shapes and sizes, they achieve improved power generating performances.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: February 18, 2020
    Inventor: George Pul
  • Patent number: 10539120
    Abstract: This presents a Utility Model related to an improvement introduced in a piece of equipment conceived to capture wind power generated by the displacement of trains, subways, vehicles in general—overall trucks—along railroads, roads, etc., and to convert it in electrical power, thus using such considerable energetic potential. Considering that the assembly of one or a plurality of wind rotors (P) and respective electricity generators (G) are assembled on semi-tows (K) of the type engaged and handled by a truck (mechanical horse), considering that the trailers (K) provided with means for storing the electrical power generated, such as batteries (B), or other means for electricity transmission and storage. Thus, the aerogenerators (P) may be displaced to the points with the biggest flow of passing vehicles, and may also be positioned on the direction where the natural (predominant) winds are favorable to the best use of the wind potential.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: January 21, 2020
    Inventor: Eti Galvani Uliano
  • Patent number: 10539115
    Abstract: Disclosed is a vertical axis wind turbine apparatus. The apparatus includes carousal shafts operatively connected to a fixed turbine axis. The turbine blades are pivotally attached to carousal plates. The wind-facing turbine blades get exposed to a maximum area by stretching away from the fixed turbine axis, and the turbine blades that are not exposed to wind get folded inside toward the fixed turbine axis. The stretching and folding of the blades is affected by timing and restricting shafts, which emerge from the offset timing shaft. The present construction reduces the drag caused by turbine blade exposure in negative wind direction and increases energy production by simultaneously allowing maximum blade exposure in the positive wind direction. Furthermore, the apparatus in one embodiment includes counterweights to provide more stability to the offset shaft operation.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: January 21, 2020
    Inventors: Dilson dos Santos Rodrigues, Donald Coy Beaman
  • Patent number: 10539116
    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to provide wind turbine control and compensate for wind induction effects. An example method includes receiving wind speed data from a Light Detecting and Ranging (LIDAR) sensor. The example method includes receiving operating data indicative of wind turbine operation. The example method includes determining an apriori induction correction for wind turbine operating conditions with respect to the LIDAR wind speed data based on the operating data. The example method includes estimating a wind signal from the LIDAR sensor that is adjusted by the correction. The example method includes generating a control signal for a wind turbine based on the adjusted LIDAR estimated wind signal.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: January 21, 2020
    Assignee: General Electric Company
    Inventors: Samuel Davoust, Conner B. Shane, Fabiano Daher Adegas, Thomas Stephen Markham, Dale Robert Mashtare
  • Patent number: 10533538
    Abstract: A cooling device for components of wind turbines, comprising at least one conduit (3) containing therein a working fluid (5) selected to change from a liquid to gas phase, and vice versa, during operation; wherein a first lower portion of each conduit (3) is inserted into a receptacle (2) through which a primary coolant fluid (10) transporting heat from a component of a wind turbine to be cooled (7) circulates, said lower portion acting as an evaporator of the working fluid (5); and wherein a second upper portion of each conduit (3) remains outside the receptacle (2), acting as a condenser of the working fluid (5).
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: January 14, 2020
    Assignee: ALAZ-ARIMA, S.L.
    Inventors: Zheng Ye, Juan Jose Aguas Alcalde, Leire Hurtado Garcia, Adolfo Azcarate Azcona
  • Patent number: 10502189
    Abstract: A method for erecting a multirotor wind turbine (10) is disclosed. A carrier structure (1, 1a, 1b) is arranged circumferentially with respect to a tower structure (2) and hoisted to an upper part of the tower structure (2), using a hoisting arrangement, such as a wire winch arrangement (3, 4, 8). Furthermore, energy generating units (5) may be hoisted to the carrier structure (1, 1a, 1b) using the hoisting arrangement (3, 4, 8). A similar method for dismantling a multirotor wind turbine (10) is also disclosed. The multirotor wind turbine (10) can be erected or dismantled without the need for an external crane.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: December 10, 2019
    Assignee: Vesta Wind Systems A/S
    Inventors: Torben Ladegaard Baun, Jesper Lykkegaard Neubauer, Gunnar K. Storgaard Pedersen, Erik Carl Lehnskov Miranda
  • Patent number: 10502193
    Abstract: A repair method for a gearbox assembly for a wind turbine is disclosed. The gearbox includes a gearbox housing having an upwind end and a downwind end, a gear assembly configured within the gearbox housing, at least one shaft configured with the gear assembly and extending from the gearbox housing to a generator of the wind turbine, and a sleeve assembly configured with the gearbox housing. Further, the sleeve assembly is removable so as to provide additional space in the gearbox housing during at least one of disassembly or assembly of the gearbox assembly such that the various components can be easily repaired and/or replaced.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: December 10, 2019
    Assignee: General Electric Company
    Inventors: Rong Li, Jonathan Paul Signore, Tingyu Zhang, Wei Zheng, Souvik Porel, Priyangu C. Patel, James Edward Cencula
  • Patent number: 10502196
    Abstract: A slip ring system for a wind turbine for electrically connecting a first electrical device and a second electrical device, wherein the first electrical device is mounted to a rotor of the wind turbine, and the second electrical device is mounted to a nacelle of the wind turbine, is provided. The slip ring system comprises a slip ring apparatus and a rotational damping apparatus, with which an electrical connection between the first electrical device and the second electrical device can be established. The slip ring apparatus has a rotatable component with a rotatable electrode and a non-rotatable support electrode, wherein the rotatable electrode is electrically connected to the first electrical device, and the support electrode is electrically connected to the second electrical device.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: December 10, 2019
    Assignee: General Electric Company
    Inventors: Stephan Kluemper, Andre Langel, Thomas Edenfeld, Xianglei Chen
  • Patent number: 10502190
    Abstract: A support structure of a wind turbine and a method of manufacturing the support structure is provided. A support structure of a wind turbine is disclosed, whereby the support structure includes a first end to connect to a rotor of a wind turbine, and a second end to be connected to a tower of a wind turbine. The support structure includes an intermediate part that connects the first end to the second end, and that the intermediate part includes the form of an elbow-shaped tube. The support structure is divided into at least two segments whereby the segments are transportable individually from a manufacturing site to a construction site. The segments are connectable in a way that the support structure is capable of transferring forces from the rotor to the tower.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: December 10, 2019
    Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
    Inventor: Daniel Kai Jensen
  • Patent number: 10495061
    Abstract: The invention relates to a method of controlling a wind turbine, the wind turbine comprising wind turbine blades attached to a rotor hub and a control system for pitching the blades relative to the rotor hub. The method comprises determining a wind speed and providing a normal pitch mode of operation to control the output power of the wind turbine, where the pitch mode of operation comprises pitch reference values in dependence of the wind speed. The output power of the turbine is controlled according to the normal pitch mode of operation as a function of the wind speed if the wind speed is lower than a first upper level wind speed threshold, and according to a modified mode of operation if the wind speed exceeds the first upper level threshold wind speed, wherein the modified mode of operation comprises decreasing the output power according to a de-rating function which is a function of time.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: December 3, 2019
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Erik Carl Lehnskov Miranda, Martin Atzler, Shuang Li, Thomas Scheel
  • Patent number: 10495057
    Abstract: A bolted attachment having opposite threaded sections between which a shank is provided having at least two shank sections with different diameter located at a length from the threaded section of at least three times the difference between a diameter of a threaded section and a minimum diameter of the shank. At least one conical transition is formed between two adjacent shank sections where the ratio of its length to a difference between a diameter at one end of the transition and a diameter at the opposite end of the transition is of at least 0.85.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: December 3, 2019
    Assignee: GE RENEWABLE TECHNOLOGIES WIND B.V.
    Inventors: Ferran Roura, Jose Luis Roman Mallada, Nicolas Velazquez