Wind Patents (Class 290/44)
  • Patent number: 9897074
    Abstract: A wind turbine is arranged to operate in a fully-functional converter mode and a faulty-converter mode. A plurality of converters are arranged to share electric current in the fully-functional converter mode. The converters are dimensioned not only to operate at nominal active current but to provide an over-current margin to enable reactive current to be produced on top of the nominal active current in the fully-functional converter mode. In the fully-functional converter mode the converters are caused to produce reactive current on top of the nominal active current. In response to a fault of one or more of the converters, operation is changed from the fully-functional converter mode to the faulty-converter mode.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: February 20, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventor: Thomas Hjort
  • Patent number: 9896959
    Abstract: The present invention relates to a wind turbine and a measuring system for determining the pitch angle of at least one blade relative to a hub of a wind turbine.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: February 20, 2018
    Assignee: SSB Wind Systems GmbH & Co. KG
    Inventors: Fabio Bertolotti, Christian Bott
  • Patent number: 9897516
    Abstract: Generally, a system and method consistent with the present disclosure may provide a relatively low cost, relatively robust data acquisition and analysis system useful for condition-based maintenance. The system may be useful for condition-based maintenance in industrial applications, e.g., of equipment and/or machinery. The industrial monitoring system may be used, for example, to monitor a condition of rotating machinery, e.g., a wind turbine. The system and method may include data analysis that may be useful for anticipating a need for maintenance, repair and/or replacement of one or more components.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: February 20, 2018
    Assignee: Simmonds Precision Products, Inc.
    Inventors: Eric R. Bechhoefer, John T. Taylor
  • Patent number: 9886864
    Abstract: A method is disclosed where an airborne wind turbine (AWT) is prevented from coming into contact with airborne objects such as birds and bats. The AWT determines the location and characteristics of the incoming airborne objects, and depending on the determined risk value, may shift the location of the aerial vehicle of the AWT in order to avoid the risk of colliding with the airborne objects. Other considerations used by the AWT's determination may include whether the aerial vehicle can continue to generate electricity while performing the avoidance maneuver.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: February 6, 2018
    Assignee: X Development LLC
    Inventors: Erik Christopher Chubb, Thomas Van Alsenoy, Fort Felker
  • Patent number: 9887551
    Abstract: A method for operating a first energy generator in an electric power supply system to which a plurality of electric consumers and at least the first energy generator, which is embodied as a regenerative energy generator, are connected via respectively one grid connection point each assigned thereto, wherein at least the first energy generator has an inverter of predetermined power rating, the AC voltage output of which is electrically connected to a first grid connection point assigned thereto, and wherein the operating control of the inverter regarding its reactive power feed and/or its reactive power draw into or out of the electric power supply system takes place depending on a continuously measured mains voltage value. The reactive power control in the energy grid is improved in that the mains voltage value is measured at a second grid connection point, which is different from the first grid connection point of the energy generator.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: February 6, 2018
    Assignee: BOB Holding GmbH
    Inventor: Bernhard Beck
  • Patent number: 9885343
    Abstract: A blade for a wind turbine comprises a substantially hollow shell which comprises an opening which extends along at least part of the length of the blade, and a servicing unit displaceable along the blade shell, at least partly arranged inside the shell and comprising an arm adapted to project out of the shell through the opening.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: February 6, 2018
    Assignee: ALSTOM Renewable Technologies
    Inventors: Jaume Betran Palomas, Jorge Menasanch De Tobaruela
  • Patent number: 9882443
    Abstract: A direct-drive wind turbine comprises a wind turbine rotor and a generator mounted on a frame. The wind turbine rotor comprises a hub carrying blades and the generator comprises a generator stator comprising a track structure and a stator surface connected to the track structure, wherein the stator surface has coil windings, and carriages connected one after the other and adapted to run on the track structure, wherein the carriages carry an electrically magnetically active material facing the stator surface such that when the carriages run along the track structure a magnetic field is generated across an air gap provided between the carriages active materials and the stator coil windings, wherein one or more carriages are directly coupled to the wind turbine rotor by rigid connectors such that rotation of the wind turbine rotor causes displacement of the carriages along the track.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: January 30, 2018
    Assignee: ALSTOM Renewable Technologies
    Inventor: Pere Cortada Acosta
  • Patent number: 9879654
    Abstract: A method for controlling an inclination of a floating wind turbine platform comprising a generator, a set of turbine blades connected to a shaft inside a turbine nacelle, the turbine nacelle being mounted onto a tower, and at least three stabilizing columns is presented. Each of the at least three stabilizing columns have an internal volume for containing ballast. Position data associated with an orientation of the floating wind turbine is received. A heel angle in reference to the floating wind turbine platform is determined based on the position data. A first signal for adjusting at least one of a blade pitch of the set of turbine blades, and a torque of the generator is sent based on the determined heel angle. A second signal for distributing the ballast among the at least three stabilizing columns is also sent. The second signal for distributing the ballast is based on the determined heel angle and the first signal.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: January 30, 2018
    Assignee: PRINCIPLE POWER, INC.
    Inventors: Antoine Peiffer, Christian Cermelli, Dominique Roddier
  • Patent number: 9869352
    Abstract: A one-way clutch includes: a plurality of engaging elements which restrict relative rotation toward the other side of a circumferential direction by engagement with an inner ring outer circumferential surface and an outer ring inner circumferential surface and which allows the relative rotation along the other side of the circumferential direction by releasing the engagement; and a ring-shaped cage which holds the engaging elements. In a clutch unit, a positioning member which is capable of contact a side surface of the cage in an axial direction and which positions the cage along the axial direction is provided between the one-way clutch and a rolling bearing.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: January 16, 2018
    Assignee: JTEKT CORPORATION
    Inventors: Hideki Fujiwara, Kazushige Ootsuka
  • Patent number: 9872403
    Abstract: The present disclosure is directed to an electrical cabinet for an electrical assembly for a wind turbine. The electrical cabinet has one or more walls that define an internal volume having one or more electrical components configured therein. One or more of the walls includes an inner panel and an outer panel mounted to the inner panel. The inner panel includes an inner vent and the outer panel includes an outer vent. Further, the panels are arranged together so as to define a flow path between the inner and outer vents. Thus, during normal operation, air is directed from outside of the electrical cabinet to the internal volume of the electrical cabinet via the flow path so as to cool the one or more electrical components. Further, during a fault event, gas is permitted to exit the internal volume of the electrical cabinet via the flow path.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: January 16, 2018
    Assignee: General Electric Company
    Inventors: Winston Lei Zeng, Thomas Robert Donnelly, Cornelius Edward Holliday, III, David Scott Wilmer
  • Patent number: 9870236
    Abstract: A control system for a wind turbine is provided. The control system includes a plurality of controllers distributed in the wind turbine or the wind power plant; and a plurality of data storage units, each data storage unit being arranged at a respective predetermined position in the wind turbine or the wind power plant and being coupled to the controller arranged at the same position; wherein each data storage unit comprises operational information pertaining to the predetermined position in the wind turbine or the wind power plant; and wherein each controller is configured to read the operational information of the corresponding data storage unit and to determine its function from the operational information.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: January 16, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventor: John Bengtson
  • Patent number: 9866160
    Abstract: A system includes a source side converter for being electrically coupled to a generator of a power source, a line side converter for being electrically coupled to a power network, a DC link coupled between the source side converter and the line side converter, and a controller for generating source side switching signals based on a current or torque of the generator and a virtual impedance signal for system damping or reactive power compensation when at least one detected signal of the system is not normal. A method for controlling the system is also included.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: January 9, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Zhuohui Tan, Jinping Gao, Rajni Kant Burra, Govardhan Ganireddy
  • Patent number: 9863400
    Abstract: A method for controlling a wind turbine system may generally include controlling a wind turbine to operate at a speed and torque setting within a permissible operating region defined between maximum and minimum operating curves, receiving a speed de-rate request and/or a torque de-rate request to de-rate the wind turbine based on a limiting constraint of the wind turbine system, determining an adjusted speed setting and/or an adjusted torque setting for the wind turbine based on the speed de-rate request and/or the torque de-rate request, determining whether an adjustment of the wind turbine operation to the adjusted speed setting and/or the adjusted torque setting would place the turbine outside the permissible operating region and, if the adjustment would place the operation outside the permissible operating region, adjusting the speed setting and/or the torque setting to a new speed and/or torque setting defined along the maximum or minimum operating curve.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: January 9, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Edward Wayne Hardwicke, Jr., Anthony Michael Klodowski, Jignesh Govindlal Gandhi, Sidney Allen Barker, Thomas Ernst Dinjus, Reinhard Bruegger
  • Patent number: 9863398
    Abstract: A wind power rotor has a first and second rotor device. The first rotor device rotates about a first axis of rotation and has at least two rotor blades moving on a peripheral track about the first axis of rotation. The rotor blades are such that they describe a virtual first shell surface of a virtual first rotating body upon rotation about the first axis of rotation. The second rotor device rotates about a second axis of rotation and has a second rotating body with a closed second shell surface. The second rotating body is arranged at least partially inside of the virtual first rotating body. The first rotor device can be driven by wind in a first direction of rotation and the second rotor device has a drive device, and can be driven in a second direction of rotation which is opposite that of the first direction of rotation.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: January 9, 2018
    Assignee: Airbus Defence and Space GmbH
    Inventor: Jost Seifert
  • Patent number: 9859839
    Abstract: An apparatus, system, and method are disclosed for power generation. A wind turbine is configured to drive an electrical generator. One or more solar panels are electrically coupled to the electrical generator to provide power from the electrical generator and/or the one or more solar panels. A base is configured for mounting the wind turbine to a structure. The wind turbine may be pivotally coupled to the base such that an angle of the wind turbine is adjustable relative to the structure.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: January 2, 2018
    Inventor: Marcio Pugina
  • Patent number: 9859828
    Abstract: The present invention relates to method for operating a power plant, with at least one wind turbine generator arranged for supplying power to an electrical grid, at least one energy storage device arranged for supplying power to the electrical grid, and a power plant controller, the method comprises, measuring repetitively measurement sets of at least one electrical parameter from the electrical grid, and calculating, in respect the measurement sets of the at least one electrical parameter, a change in active and/or a required change in reactive power at a point of common coupling, and calculating and dispatching of a first control reference signal to the at least one wind turbine generator and a second control reference signal to the at least one energy storage device, for providing ancillary service functionalities to the electrical grid.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: January 2, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Germán Claudio Tarnowski, Philip Carne Kjær, Rasmus Lærke, Florin Iov, Remus Teodorescu, Andrzej Adamczyk
  • Patent number: 9859716
    Abstract: A hybrid AC and DC distribution system includes a doubly fed induction generator (DFIG), a DC distribution bus, an AC/DC converter, an AC distribution bus, and a DC/AC converter. The DFIG includes a rotor and a stator, and is configured to generate a first AC power at the rotor and a second AC power at the stator. The AC/DC converter is coupled to the rotor and the DC distribution bus. The AC/DC converter converts the first AC power to a first DC power at a first node for delivery to a first load through the DC distribution bus. The DC/AC converter is coupled between the first node and a second node coupled to the stator and the AC distribution bus. The DC/AC converter converts the first DC power to the second AC power at the second node for delivery to a second load through the AC distribution bus.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: January 2, 2018
    Assignee: General Electric Company
    Inventors: Arvind Kumar Tiwari, Yashomani Y. Kolhatkar, Neeraj Agrawal
  • Patent number: 9856859
    Abstract: A wind turbine (1) is provided, having a wind turbine tower (2) and at least one rotatable blade (5), and further comprising a system for measuring rotor blade vibration of said wind turbine. The system comprises at least one Doppler radar unit (7) operatively configured to emit and receive radar signals, the radar unit being mounted on the wind turbine tower at a position above the lowest position of the at least one blade, the radar unit being positioned so as to measure reflections of an emitted radar signal from the turbine blade. A processing unit is configured to receive measurement data from the radar unit and to determine, by analysis of Doppler shift in received radar signals relative to transmitted signals due to movement of the blade towards or away from the turbine tower, the velocity of the blade in the direction towards or away from the turbine tower.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: January 2, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Knut Vangen, Erik Meum, Jan Roar Pleym
  • Patent number: 9859710
    Abstract: The present invention relates to a power plant controller (23), controlling at least one electrical parameter of a wind power plant at a first point (201), the power plant controller receiving at least one measured electrical parameter at a point of measurement (204a, b), the point of measurement being different from the first point, and estimating a delta value of a difference of the at least one electrical parameter between the first point and the point of measurement, wherein estimating of the delta value is calculated based on an impedance between the point of measurement and the first point, and at least one reference value of the power plant controller, and the power plant controller controls the at least one electrical parameter on the basis of the at least one measured electrical parameter and the delta value.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: January 2, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventor: Jorge Martinez Garcia
  • Patent number: 9856857
    Abstract: A method and system for converting mechanical energy from a generator operated by a turbine into electric energy to be input into an electric network, comprising the following: (A) supplying a power electronic converter connectable to input of the generator and to output of the electric network; (B) supplying an electrical power outputting the generator to the power electronic converter; (C) adapting the electrical power using the power electronic converter to input the electrical power to the electric network by the following substeps: (C1) calculating rotation speed of the turbine; (C2) calculating wind speed moving the turbine; (C3) calculating reference rotation speed, corresponding to the maximum point of power input to the electric network, using a Maximum Power Point Tracking algorithm; the method comprising substep (C1) implemented by an algorithm carrying out a virtual encoder, and substep (C2) implemented by training a neural network implementing a virtual anemometer.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: January 2, 2018
    Assignee: CONSIGLIO NAZIONALE DELLE RICERCHE
    Inventors: Gianpaolo Vitale, Marcello Pucci, Massimiliano Luna
  • Patent number: 9853453
    Abstract: A wind park control system for controlling wind turbines of a wind park during a plant controller handover is provided. A plurality of plant controllers compute control values on the basis of system input data, which plant controllers are realized to operate in parallel. One of the plant controllers operates as an active plant controller for computing control values for controlling the wind turbines. One further plant controller operates as a standby plant controller. An output means continually issues control values to the wind turbines of the wind park. A handover arrangement for handing over control from the hitherto active plant controller to an operative standby plant controller is provided such that that standby plant controller then assumes the function of active plant controller. Further, a wind park, a method of controlling a wind park, and a method of performing a plant controller handover in a wind park are provided.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: December 26, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Kaj Skov Nielsen
  • Patent number: 9850883
    Abstract: Methods and apparatus, for generating electricity from airflow and thermal energy. In one aspect, an electricity generating apparatus includes a housing including a double-walled section containing a thermal salt to store heat and form a pressure chamber within the housing, a collector coupled with the housing and including two or more inlet channels configured to direct ambient air into the pressure chamber, and a nozzle coupled with the housing configured to direct a convection current of air into the pressure chamber, and a turbine including a rotor and a stator to generate electricity from air flow through the pressure chamber, the rotor having an aerodynamic rotor case and convergent blades and the stator having an aerodynamic stator case and divergent blades, and where the double-walled section containing the thermal salt surrounds at least a portion of the collector and surrounds a portion of the turbine.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: December 26, 2017
    Assignee: Bajaura S.A. DE C.V.
    Inventors: Diego Moreno Maldonado, Diego Moreno Garcia
  • Patent number: 9849970
    Abstract: A turbo engine includes a system for changing a pitch of blades of a propeller, the system including an annular fluid cylinder with a linear drive and a link mechanism linking the cylinder to the blades of the propeller to change an orientation of the propeller. The annular cylinder of the system can be rigidly mounted on a fixed housing supporting the propeller and internal to the propeller, unlike the blades mounted in an external rotating hub of the propeller, and the link mechanism includes a displacement transfer bearing fixed, on one side, to the mobile part of the cylinder and cooperating, on the other side, with a mechanism linking to the blades of the rotating hub of the propeller.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: December 26, 2017
    Assignees: SNECMA, GE Aviation Systems Limited
    Inventors: Didier Rene Andre Escure, Denis Louis Bocquet, Gilles Alain Charier, Aleksander Szymandera, Marek Malitka, Jan Sikorski, Christopher Carrington
  • Patent number: 9850879
    Abstract: The invention relates to a method for moving a wind turbine component, such as a wind turbine hub, from a transportation position to a wind turbine assembly position. The method comprises the steps of: attaching a handling unit to a structural part of the wind turbine component, operatively connecting the handling unit to a wire of a crane system, lifting the wind turbine component with the crane system to an assembly position of the wind turbine, the handling unit and the wind turbine component being suspended from a wire of the crane system, and rotating the wind turbine component with the handling unit during the lifting of the wind turbine component in order to orientate the wind turbine component for assembly. The invention also relates to a handling unit and a wind turbine hub and use hereof.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: December 26, 2017
    Assignee: Vestas Wind Systems A/S
    Inventor: Gunnar Kamp Storgaard Pedersen
  • Patent number: 9845788
    Abstract: A wind farm comprises a plurality of wind turbines connected to a network internal to the wind farm, a network feed-in point in the network internal to the wind farm for feeding electrical power into a supply network, a control device associated with the network feed-in point designed to control the wind turbines feeding power into the supply network by the network feed-in point on the basis of measured values recorded at the network feed-in point, and at least one additional network feed-in point having an additional control device designed to control the wind turbines feeding power into the supply network by the additional network feed-in point on the basis of measured values recorded at the additional network feed-in point, wherein the network internal to the wind farm is designed to variably connect at least one wind turbine to one of the plurality of network feed-in points.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: December 19, 2017
    Assignee: SENVION SE
    Inventor: Matthias Schubert
  • Patent number: 9846976
    Abstract: Methods for assessing the useful life that may remain for a portion of a wind turbine support structure. The methods may include identifying an overall expected useful life for the portion of the support structure and estimating an expended life from the extent of loading that has occurred to the portion of the support structure during the operative life of a wind turbine. The useful life remaining for the portion may be determined by subtracting the expended life from the overall expected useful life.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: December 19, 2017
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventor: Marcel Van Duijvendijk
  • Patent number: 9841001
    Abstract: A banded turbine configuration has an integral outer band support structure capable of providing two point simple support for a multiplicity of blades. A large scale vertical array has a set of twelve 23 m-diameter banded turbines with up to nine blades and resting on an Open Web Steel Joist (OWSJ) platform. The banded turbine configuration is supported off of a main shaft hub assembly, which is supported by forward and aft pillow block bearing assemblies. The banded turbine allows for a protective screen for bird- and bat-kill prevention. Each banded turbine employs DC alternators to provide a switchable output which is subsequently fed to a dedicated set of high efficiency grid-compatible solid state invertors or, alternatively, to energy storage.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: December 12, 2017
    Inventor: William R. Richards
  • Patent number: 9843189
    Abstract: A battery energy storage system control system, including: logic coupled to a photovoltaic station and an energy storage system and executing a photovoltaic station capacity firming algorithm operable for making a combined output of the photovoltaic station and the energy storage system substantially constant such that power swings on an associated feeder system are avoided; logic coupled to the photovoltaic station and the energy storage system and executing a voltage support algorithm operable for holding point of common coupling voltage and phase values substantially equal to substation voltage and phase values via power injection or removal; and logic coupled to the photovoltaic station and the energy storage system and executing an energy time shift algorithm operable for storing energy during periods of relatively low demand and providing energy during periods of relatively high demand.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: December 12, 2017
    Assignees: The University of North Carolina at Charlotte, Duke Energy Corporation
    Inventors: Sukumar Kamalasadan, Sherif Abdelmageed Abdelrazek, Johan H. R. Enslin, Daniel Blair Sowder
  • Patent number: 9843185
    Abstract: A method of optimizing one or more starting parameters of a solar power generator system and a solar power generator system, wherein the solar power generator system includes a solar panel array and a converter for converting power obtained from the panel array. The method can include measuring an output voltage of the panel array, comparing the output voltage with a starting voltage (Vdc), starting the solar power generator system when the output voltage of the panel array exceeds the starting voltage (Vdc), measuring the obtained power from the solar panel array after a morning start, comparing the obtained power with a known limit value, and changing the one or more starting parameters on the basis of the comparison of power.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: December 12, 2017
    Assignee: ABB Oy
    Inventors: Jari Uusimäki, Jarkko Hyttinen, Janne Hellberg
  • Patent number: 9841006
    Abstract: A wind turbine has a Lidar device to sense wind conditions upstream of the wind turbine. Signals from the wind turbine are processed to detect an extreme change in wind direction. The detection is performed by differentiating the rate of change of wind direction and filtering for a period of time. On detection of extreme change the system controller takes the necessary evasive action which may include shutting down the turbine, commencing an immediate yawing action, and de-rating the turbine until the yawing action is complete.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: December 12, 2017
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Justin Creaby, Robert Bowyer, Christopher Spruce
  • Patent number: 9836063
    Abstract: Example implementations may relate to selection between a first mode and a second mode. The first mode may involve (i) directing an aerial vehicle (e.g., in an aerial network including a plurality of aerial vehicles) to navigate to each of a plurality of altitudes and (ii) determining respective wind-related data at each respective altitude. Whereas, the second mode may involve (i) selecting at least one altitude based on the determined wind-related data and (ii) directing the aerial vehicle to reposition to the at least one selected altitude. As such, a control system may determine flight data for the aerial vehicle. Based on the flight data, the control system may make a selection between the first mode and the second mode. And based on the selection, the control system may then operate the aerial vehicle according to the first mode or may operate the aerial vehicle according to the second mode.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: December 5, 2017
    Assignee: X Development LLC
    Inventors: Keith Allen Bonawitz, Johan Mathe
  • Patent number: 9835134
    Abstract: A method and corresponding arrangement are provided for determining pitch angle adjustment signals for adjusting a pitch angle of a rotor blade connected to a rotation shaft of a wind turbine. The method includes obtaining a first maximal speed signal indicative of a first desired maximal rotational speed of the rotation shaft. The method also includes deriving a first pitch angle adjustment signal based on the first maximal speed signal. The method further includes obtaining a second maximal speed signal indicative of a second desired maximal rotational speed of the rotation shaft different from the first desired maximal rotational speed of the rotation shaft. Further, the method includes deriving a second pitch angle adjustment signal based on the second maximal speed signal. The second pitch angle adjustment signal is different from the first pitch angle adjustment signal.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: December 5, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Thomas Esbensen, Gustav Hoegh
  • Patent number: 9835135
    Abstract: A method for controlling a wind turbine may generally include operating the wind turbine at an initial power output that is greater than a rated power output associated with the wind turbine. The wind turbine may have an anticipated operational life at the rated power output. In addition, the method may include decreasing a power output of the wind turbine over time in order to maintain an actual operating life of the wind turbine substantially equal to or greater than the anticipated operational life. A final power output of the wind turbine at an end of the anticipated operating life may be less than the rated power output.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: December 5, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventor: Samuel David Draper
  • Patent number: 9828968
    Abstract: The device, herein to be known as the HydroQueen, is a device to convert the kinetic energy of a fluid into electrical energy using a single or multiple helix shaped vertical paddles. The helix shaped vertical paddle rotates around its axis from the force placed on face of paddle by the movement of the fluid. The electricity is generated by the rotation of the paddle around its axis. The number, length, radii, and pitch of the paddles may vary depending on the location and/or application.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: November 28, 2017
    Inventor: Dorraine Marie Rooney
  • Patent number: 9829254
    Abstract: An installation for storing thermal energy is provided. The storage is carried out by the compression and relaxation of a working gas, wherein pump and compressor can be driven by, for example, electric motors which temporarily absorb excess power generated in the power grid. The generated thermal energy is temporarily stored in a cold accumulator and a heat accumulator. According to the invention, a vapor circuit is provided to connect to the heat accumulator and the cold accumulator for discharging the installation, by which a turbine for generating electrical energy can be driven by a generator. Said circuit is implemented by means of another conduit system distinct from the circuit for charging the installation. Advantageously, thermal energy generated from overcapacities in the power grid can thus be reconverted with high yield into electrical energy via a vapor circuit.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: November 28, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Daniel Reznik, Henrik Stiesdal
  • Patent number: 9822763
    Abstract: A wind turbine has a Lidar device to sense wind conditions upstream of the wind turbine. Wind speed signals from the wind turbine are processed to detect an extreme operating gust. The detection is performed by differentiating the axial wind velocity and filtering for a period of time. On detection of extreme operating gust the system controller takes necessary evasive action which may include shutting down the turbine or varying the blade pitch angle.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: November 21, 2017
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Chris Spruce, Christopher Palmer, Robert Bowyer
  • Patent number: 9825568
    Abstract: A drive system has: a three-phase motor, having: a shaft, a first three-phase winding set, having: a three-phase stator winding for connection to a three-phase alternating voltage network and a three-phase rotor winding, which is coupled to the shaft in a mechanical, rotationally fixed manner, a second three-phase winding set, having: a three-phase stator winding for connection to the three-phase alternating voltage network in such a manner that rotary field is produced that runs in the opposite direction to a rotary field that is produced by the stator winding of the first winding set.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: November 21, 2017
    Assignee: Lenze Drives GmbH
    Inventor: Andreas Tolksdorf
  • Patent number: 9825573
    Abstract: A device for ripple controlling an alternator includes an alternator including a rotor and a stator, a detector for detecting a rotation position of the rotor, and a controller for controlling the alternator to generate a toque ripple with an opposite phase to a rotation of a crankshaft of an engine.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: November 21, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventor: Byung Hwan Jung
  • Patent number: 9822764
    Abstract: An automatic adjustment system for a variable-speed wind turbine is provided, having a power vector generator for generating a power vector (Pvec) of wind turbine output power; a mapping unit for establishing relationships (?vec, ?vec) between wind turbine output power and rotational speed and pitch angle on the basis of the power vector (Pvec) and an operational trajectory of the wind turbine; a wind speed estimator for estimating a wind speed (vest); an available power calculator for calculating the available power (Pest) of the wind turbine on the basis of the estimated wind speed (vest) and the established relationships (?vec, ?vec). A method of performing automatic analysis of a wind turbine configuration, a computer program product for carrying out the steps of such a method, and a wind turbine having such an automatic adjustment system are also provided.
    Type: Grant
    Filed: October 5, 2014
    Date of Patent: November 21, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Thomas Esbensen, Ramakrishnan Krishna, Frank Scheurich, Michael Stoettrup
  • Patent number: 9816484
    Abstract: The invention relates to a safety system for a wind turbine, comprising a pitch system (23), which comprises a plurality of drive systems (15, 16, 17) and at least one safety switching device (24), by means of which each of the drive systems (15, 16, 17) can be controlled to carry out a travel to a safe position in accordance with at least one control signal, a safety circuit, which is provided in a machine part adjacent to the pitch system (23) and which comprises a transmission device (32) and a controller (29), by means of which the at least one control signal can be generated, which can be transmitted from the controller (29) to the safety switching device (24) by means of the transmission device (32), wherein the control signal can be generated and/or output by the controller (29) in the form of at least two control signals (EFC 1, EFC 2), the control signals (EFC 1, EFC 2) can be transmitted from the controller (29) to the safety switching device (24) by means of the transmission device (32), a safety-r
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: November 14, 2017
    Assignee: SSB Wind Systems GmbH & Co. KG
    Inventors: Christof Rickeshenrich, Jan De Veen, Dirk Klein, Ronald Horstjan
  • Patent number: 9812859
    Abstract: Distributed maximum power point tracking systems, structures, and processes are provided for power generation structures, such as for but not limited to a solar panel arrays. In an exemplary solar panel string structure, distributed maximum power point tracking (DMPPT) modules are provided, such as integrated into or retrofitted for each solar panel. The DMPPT modules provide panel level control for startup, operation, monitoring, and shutdown, and further provide flexible design and operation for strings of multiple panels. The strings are typically linked in parallel to a combiner box, and then toward and enhanced inverter module, which is typically connected to a power grid. Enhanced inverters are controllable either locally or remotely, wherein system status is readily determined, and operation of one or more sections of the system are readily controlled. The system provides increased operation time, and increased power production and efficiency, over a wide range of operating conditions.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: November 7, 2017
    Assignee: Solaredge Technologies Ltd.
    Inventors: Argil E. Shaver, II, Ronald M. Newdoll
  • Patent number: 9803624
    Abstract: A wind compressor system having one or more wind turbines and a plurality of wind compressors located proximate the one or more wind turbines. The wind compressors optimize the energy created by the wind turbines by redirecting and converging the wind from the wind compressor to the wind turbines. Each of the wind compressors comprises an obstruction having a size and shape adapted to converge the wind currents by means of a Venturi effect toward the one or more turbines thereby increasing the velocity and force of the wind hitting the wind turbine. A plurality of transporters coupled to the wind compressors. The transporters configured to move at least one wind compressors to a location that maximizes the force of the wind encountered by the turbine.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: October 31, 2017
    Inventor: Edward Mazur
  • Patent number: 9804625
    Abstract: Systems, methods, and messages of the present invention provides IP-based messages associated with the grid elements, wherein each IP-based message includes an internet protocol (IP) packet that is generated autonomously and/or automatically by the grid elements, intelligent messaging hardware associated with the grid elements, at least one coordinator, and/or a server associated with the electric power grid and its operation, energy settlement, and/or financial settlement for electricity provided or consumed, transmitted, and/or curtailed or reduced. The IP packet preferably includes a content including raw data and/or transformed data, a priority associated with the IP-based message, a security associated with the IP packet, and/or a transport route for communicating the IP-based message via the network.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: October 31, 2017
    Assignee: CAUSAM ENERGY, INC.
    Inventor: Joseph W. Forbes, Jr.
  • Patent number: 9797377
    Abstract: The present disclosure is directed to a system and method for controlling a wind farm. The method includes operating the wind farm based on multiple control settings over a plurality of time intervals. A next step includes collecting one or more wind parameters of the wind farm over the plurality of time intervals and one or more operating data points for each of the wind turbines in the wind farm for the plurality time intervals. The method also includes calculating a contribution of the operating data points for each of the wind turbines as a function of the one or more wind parameters. Further steps of the method include estimating an energy production for the wind farm for each of the control settings based at least in part on the contribution of the operating data points and controlling the wind farm based on optimal control settings.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: October 24, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Nitika Bhaskar, Akshay Ambekar Krishnamurty
  • Patent number: 9800122
    Abstract: A method for handling a bearingless machine into a driveline includes coaxially aligning a rotor subassembly and a stator subassembly such that first and second circumferential track portions define a substantially complete first circumferential track in communication with a first portal. A first fixture band is inserted into the first circumferential track via the first portal to substantially maintain axial and radial alignment of the rotor subassembly relative to the stator subassembly.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: October 24, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Richard A. Himmelmann
  • Patent number: 9797383
    Abstract: A wind turbine having one or more magnets for reducing friction between the turbine support and a turbine rotor. The reduction of friction between the turbine rotor and the turbine support allows for an increase in energy production and scale of the wind turbines. The magnet configuration employs a ring of cylindrically-shaped magnets at the bottom and opposed by a corresponding number of generally rectangular-shaped magnets. Bearing magnets are also employed for axial stabilization.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: October 24, 2017
    Assignee: Hover Energy, LLC
    Inventors: Cheong S. Choi, Anthony Michael Jenkins
  • Patent number: 9797380
    Abstract: Systems and methods for generating electricity using solar panels to power compressor fans that force air into a nacelle that turns a spiral turbine. The turbine is connected to a gearing system that is connected to a generator. The generator is connected to a master control unit and a transformer. The master control unit decides whether to store the electricity in batteries, power the compressor fans or send the surplus electricity to the grid. The horizontal or vertical embodiments of the invention do not require a tower or the long blades connected to a hub.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: October 24, 2017
    Inventor: Bob Burkett
  • Patent number: 9797374
    Abstract: An upwind wind turbine comprising a tower and a rotor is described. The wind turbine additionally includes a pressure-sensing device supported by the tower at a location within the wake of the rotor. The pressure-sensing device is configured to sense air pressure and provide a signal indicative of the sensed air pressure to a wind turbine controller for use in controlling the rotor of the wind turbine.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: October 24, 2017
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventor: Jens Jakob Wedel-Heinen
  • Patent number: 9800198
    Abstract: An automatic intelligent hybrid electricity generating device designed to get maximum electrical energy from renewable energy resources i.e., wind and sunlight and works intelligently and moves automatically to get maximum available energy resources i.e., sunlight or wind, thereby eliminating separate installation of solar panels and wind turbine and increases efficiency.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: October 24, 2017
    Inventor: Rizwan Shoukat
  • Patent number: 9790924
    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 model of wind propagation.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: October 17, 2017
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Benoit Bayon, Jonathan Chauvin