Wind Patents (Class 290/44)
  • Patent number: 9979199
    Abstract: A multiple input single output (MISO) hybrid power system includes an electronics system that maximizes output from multiple input sources of different types. In certain embodiments, the electronics system takes in variable power from a plurality of the input sources and outputs a precisely controlled voltage that may simultaneously power a load and charge batteries. The electronics system includes an intelligent controller that monitors input from the power sources and desired output of the system substantially constantly to control maximum power output from each power source. The controller runs through a decision making algorithm to obtain maximum power from the power sources and output a single constant load.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: May 22, 2018
    Assignee: Windstrip LLC
    Inventors: Joe Maniaci, Jeffrey Buchholz
  • Patent number: 9970419
    Abstract: This disclosure provides an apparatus and system for an energy capturing pod (ECP). The ECP includes a specialized funnel shell, and a turbine. The turbine is structured with a horizontal axle in respect to a front opening of the ECP. The specialized funnel shell is designed to accelerate in coming wind speed. The specialized funnel shell includes a horizontal top airfoil that is inverted and linear along a width of the specialized funnel shell, and a horizontal bottom airfoil that is linear along the width of the specialized funnel shell.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: May 15, 2018
    Inventor: Tarek O. Souryal
  • Patent number: 9970413
    Abstract: The invention provides a wind turbine, a control system for a wind turbine and a method for controlling a wind turbine where asymmetry in load on the rotor is compensated by individual pitching by comparing a load distribution over the rotor plane with a threshold value. To avoid unnecessary compensation, the threshold value is adjusted based on a loading of the wind turbine or based on climate conditions under which the turbine operates.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: May 15, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Ali Zaib, Kenneth Tougaard Simonsen
  • Patent number: 9970415
    Abstract: A method and a system for managing loads on a wind turbine are provided. The computer-implemented method is implemented using a processor coupled to a memory device. The method includes determining a first moment of a wind load acting about a first axis of a rotor of the wind turbine, determining a second moment of a wind load acting about a second axis of a rotor of the wind turbine, and determining a resultant moment of the first moment and the second moment. The method also includes generating an error signal indicating a difference between the resultant moment and a predetermined moment level threshold signal and generating, by the processor, a first activation signal over a range of the generated error signal between a first zero activation signal level and a first full activation signal level.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: May 15, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Pranav Agarwal, Jigar Jayesh Shah
  • Patent number: 9970417
    Abstract: This disclosure relates to systems and methods for controlling a wind converter for a weak electrical grid. In one embodiment of the disclosure, a system for controlling the wind converter includes a wind converter connected to an electrical grid at a point of connection (POC) and operable to transfer a power to the electrical grid. The system includes a first control loop operable to calculate, based on electrical grid parameters and wind converter characteristics, a voltage reference to be generated by the wind converter. The system includes a second control loop to convert, based on the electrical grid parameters, the voltage reference into a current reference. The second loop converts the angle information of the voltage reference into a voltage at the POC. The system includes a third control to regulate, based at least on the current reference, the power transferred by the wind converter to the electrical grid.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: May 15, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Zhihui Yuan, Robert Roesner, Stefan Schroeder, Ara Panosyan, Krishna Kumar Anaparthi
  • Patent number: 9972993
    Abstract: An electrical system for controlling a wind turbine is provided. The electrical system includes a first resistive element, a storage element and a controller. The first resistive element and the storage element are coupled to a DC link of the wind turbine. The controller is used for switching between the first resistive element and the storage element in response to a grid side fault condition to minimize mechanical loads induced by the grid side fault condition.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: May 15, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Rajni Kant Burra, Victor Robert Abate, David Cole Magnuson, Keith Longtin
  • Patent number: 9957951
    Abstract: A method of controlling a wind turbine having a rotor and a generator for producing power, the wind turbine being designed for a nominal load, the method comprising the steps of: determining a current load acting on at least a part of the wind turbine; calculating a load error, the load error representing the difference between the nominal load and the current load; controlling the wind turbine based on the load error; wherein the step of controlling the wind turbine comprises altering a parameter of the wind turbine so that the power or torque produced by the generator is altered.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: May 1, 2018
    Assignee: Vestas Wind Systems A/S
    Inventor: Poul Brandt Christensen
  • Patent number: 9957803
    Abstract: The claimed invention relates to a turbine adapted to extract energy from the velocity of a streaming fluid such as wind, steam, tidal streams and water waves. The invented turbine is arranged with its axis of turbine rotation directed at substantially right angles to the current direction of the streaming fluid and comprising a kind of self-supported blade body which is rotationally symmetric and constructed by rotor blades integrated transversely and supported two by two, allowing the fluid to flow through the turbine with less turbulence compared to other types of turbines equipped with separate rotor blades.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: May 1, 2018
    Assignee: GOX AB
    Inventor: Sten Thomas Kullander
  • Patent number: 9956445
    Abstract: A fire suppression system for a fire zone including a first tank containing a first liquid component of a two-part foam and a second tank containing a second liquid component of the foam. The system includes at least one liquid component release device configured to be selectively capable of releasing the first and second components from their respective containers upon receipt of a signal from a fire detector upon detection of a fire. The two-part foam components are propelled through the system by a pressurized propellant that, upon release of the release device, causes the exit of the foam components from their respective tanks, through a mixing conduit to at least one nozzle. The nozzle is configured to spray the liquid component foam mixture into the fire zone wherein the foam cures into a substantially semi-rigid, closed cell foam that is substantially impermeable and may have charring and/or intumescence properties.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: May 1, 2018
    Inventor: William Armand Enk, Sr.
  • Patent number: 9951748
    Abstract: A hydroelectric power system and pump suitable for the system are disclosed which can make efficient use of the energy available in water flows with considerably variable flow rates. A simple, compact variable displacement axial piston pump can be operated so as to provide an essentially constant output pumping pressure and variable output volume that varies efficiently in accordance with water flow rate. The system is particularly suitable for shoreline tidal power generation and provides firm power output throughout the tidal slacks occurring during the tidal reversals.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: April 24, 2018
    Assignee: YOURBROOK ENERGY SYSTEMS LTD.
    Inventor: Laird Galen Bateham
  • Patent number: 9951628
    Abstract: Wind turbine (1) comprising a rotor (2) around a rotation shaft (3), having a plurality of blades (4) at a distance around the rotation shaft (3), in which the blades (4) can drive the rotor (2); a cavity (10) which extends between the ends (15) of the blades (4) closest to the rotation shaft (3); a plurality of vanes (5) around the rotor (2) for guiding wind to the blades (4), in which the vanes (5) extend from the ends (14) of the blades (4) furthest from the rotation shaft (3) to a second end (16) of the vanes (5). The vanes (5) and blades (4) merge into each other at the same curvature mathematically tangentially in a plane at right angles to the rotation shaft (3) and the curvature of the vanes (5) is described by a part of a logarithmic spiral.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: April 24, 2018
    Inventor: Geert Devisch
  • Patent number: 9945365
    Abstract: An apparatus configured to hydraulically fracture an earth formation, includes a pump configured to hydraulically fracture the earth formation by pumping a fracturing liquid into a borehole penetrating the earth formation and an electric motor having a rotor coupled to the pump and a stator. A motor control center is configured to apply an alternating electrical voltage having a fixed-frequency to the stator in order to power the electric motor, wherein the apparatus and motor control center do not have a variable frequency drive.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: April 17, 2018
    Assignee: BJ Services, LLC
    Inventors: Jennifer Hernandez, Bruce A. Vicknair, Blake C. Burnette
  • Patent number: 9945358
    Abstract: A blade adjusting device for a wind turbine is connected to a plant safety chain and can open and close the plant safety chain by activating a switch. If a fault is detected in one of the blade adjusting devices, the respective control unit can open the plant safety chain. By opening the safety chain, a signal is sent to the blade adjusting devices, and so all the blade adjusting devices initiate a synchronous safety operation of at least two rotor blades when the signal is received.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: April 17, 2018
    Assignee: AE ROTOR HOLDING B.V.
    Inventors: Reinhard Vilbrandt, Ingo Ibendorf
  • Patent number: 9948096
    Abstract: The present invention relates to a method for providing control power to stabilize an AC electrical grid, comprising an energy store which can take up and emit electrical energy, wherein for the purpose of providing the control power, the energy store is used together with a differential power provider, wherein the AC electrical grid operates at a predefined frequency and a frequency band around the predefined frequency is defined and the control power to be provided in the case of a frequency deviation within the frequency band is provided by the energy store to the extent of more than 50%, relative to the total control power to be provided.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: April 17, 2018
    Assignees: Evonik Degussa GmbH, STEAG Power Saar GmbH
    Inventors: Georg Markowz, Carsten Kolligs, Erdem Simsek, Anna Flemming, Dennis Gamrad, Sebastien Cochet, Wolfgang Schweissthal
  • Patent number: 9941837
    Abstract: A process for determining a nonlinear response of a photovoltaic cell that includes: producing a first set of first light pulses including a first light that includes a first photon flux; and different first magnitudes of first photon flux; producing a second set of second light pulses that include: a second light including a second photon flux; and different second magnitudes of second photon flux; repeating the first light pulses in a selected combination with the second light pulses to produce a combinatorial set of combinatorial light pulses including: a combinatorial light comprising a combinatorial photon flux and different combinatorial magnitudes; irradiating a photovoltaic cell separately with the first set, second set, and the combinatorial set; separately producing, a first, second, and combinatorial photovoltaic output; and solving a system of linear equations to determine the nonlinear relationship between the photovoltaic output and the magnitude of flux.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: April 10, 2018
    Assignee: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE
    Inventors: Behrang H. Hamadani, Andrew M. Shore, Howard W. Yoon
  • Patent number: 9939485
    Abstract: The various technologies presented herein relate to providing prognosis and health management (PHM) of a photovoltaic (PV) system. A PV PHM system can eliminate long-standing issues associated with detecting performance reduction in PV systems. The PV PHM system can utilize an ANN model with meteorological and power input data to facilitate alert generation in the event of a performance reduction without the need for information about the PV PHM system components and design. Comparisons between system data and the PHM model can provide scheduling of maintenance on an as-needed basis. The PHM can also provide an approach for monitoring system/component degradation over the lifetime of the PV system.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: April 10, 2018
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Jay Johnson, Daniel Riley
  • Patent number: 9932969
    Abstract: Disclosed is a wind turbine, which comprises a rotatable structure being coupled to a hub of the wind turbine and to a generator rotor comprising a brake disc, a stationary structure being coupled to a generator stator and comprising a stator frame and a safety bearing element. The rotatable structure is rotatably coupled to the stationary structure, wherein the stator frame comprises a brake mounting section to which a calliper brake is mountable such that the brake disc is breakable by the mounted calliper brake. The safety bearing element is mounted to the brake mounting section such that the brake disc is in slidable contact with the safety bearing element if a distance between the brake mounting section and the brake disc is reduced below a predetermined reference value.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: April 3, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Uffe Eriksen, Claus Johansen, Jens Anton Agerskov Veng
  • Patent number: 9932968
    Abstract: A method of making a wind turbine blade (10) having a metallic lightning receptor (110) is described. The method comprises configuring a wind turbine blade (10) mold assembly (100) such that a clearance region (120) is defined between a mold surface (116) of at least one mold half (112, 114) and a majority of a metallic lightning receptor component (110) when the mold assembly (100) is closed, such that contact between that mold half (112, 114) and the metallic lightning receptor component (110) is substantially avoided. In certain embodiments of the invention, one or both mold halves (112, 114) are truncated such that the metallic lightning receptor component (110) projects from the mold (100) when the mold (100) is closed.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: April 3, 2018
    Assignee: Vestas Wind Systems A/S
    Inventors: Damien Rajasingam, Toby Collard
  • Patent number: 9920746
    Abstract: The invention relates to a method for controlling a generator of electric energy that is connected to an electrical supply grid on a grid connection point, comprising the following steps: feeding electrical power into the electrical supply grid, whereby the generator is operated in a first operating point, interrupting the feeding so that no power is fed into the supply grid if a fault in the electrical supply grid or a fault of the feeding into the electrical supply grid exists or is displayed, resuming the feeding so that electrical power is again fed into the supply grid, whereby the generator resumes the feeding in a second operating point or is gradually increased in said second operating point, and the second operating point is designed in such a way that it feeds into the supply grid with a higher stability reserve than the first operating point.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: March 20, 2018
    Assignee: Wobben Properties GmbH
    Inventors: Volker Diedrichs, Kai Busker, Alfred Beekmann
  • Patent number: 9920743
    Abstract: A wind turbine includes wind turbine blades, a wind turbine rotor coupled to the wind turbine blades, a wind turbine generator coupled to the wind turbine rotor, a wind turbine converter coupled to the wind turbine generator, a controllable brake comprising one or more sources of controllable rotor torque adjustment for providing a first level of torque adjustment, a discrete brake for more coarsely providing a second level of torque adjustment, and a controller programmed for responding to a deceleration event by determining a required torque adjustment for braking, determining a sequence of applying the controllable brake and the discrete brake for driving a combination of the first and second levels of torque adjustment towards the required torque adjustment, and providing control signals for decelerating the wind turbine.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: March 20, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Pranav Agarwal, Govardhan Ganireddy, Mark Edward Cardinal, Venkata Krishna Vadlamudi
  • Patent number: 9920747
    Abstract: A method of controlling power provided by a generator to an end system in which power is diverted from the output of said generator to an auxiliary system during periods of excessive power output from the generator. The diverted power is stored in an energy store and, during periods of lower power output from the generator, is returned to the end system by discharging the energy store. The diversion and return of power is controlled to maintain the power delivered to the end system at a desired mean power level. Diversion of power from the generator also has the effect of preventing the generator from producing excessive voltage levels.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: March 20, 2018
    Assignee: Openhydro IP Limited
    Inventors: Edward Spooner, Simon Cawthorne
  • Patent number: 9920745
    Abstract: Wind farm comprising a farm master and a plurality of wind energy installations. The farm master has a controller with an input for a control parameter for power supplied to a grid and transmits desired value specifications to a local controller of the wind energy installations. The local controller has a dual structure and comprises a desired value channel, to which the desired value specification is applied by the farm master and which is designed to output a stationary reactive power desired value, and a responsive channel comprising an autonomous controller, to which no desired value specification is applied by the farm master and to which an actual voltage of the particular wind energy installation is applied via a washout filter. The autonomous controller with the washout filter enables a fast and dependent response to transient disturbances (e.g., voltage spikes and voltage dips as a result of a short circuit).
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: March 20, 2018
    Assignee: SENVION SE
    Inventor: Jens Fortmann
  • Patent number: 9920742
    Abstract: The present subject matter is directed to a system and method for operating a wind turbine. More specifically, the system and method determines a dynamic cut-in wind speed for the wind turbine based on one or more environmental conditions. In one embodiment, the method includes providing a predetermined cut-in wind speed for the wind turbine based on at least one estimated environmental condition for a wind turbine site; determining one or more actual environmental conditions near the wind turbine for a predetermined time period at the wind turbine site; determining a variance between the at least one estimated environmental condition and the one or more actual environmental conditions; calculating a dynamic cut-in wind speed based on the variance; and, operating the wind turbine based on the dynamic cut-in wind speed so as to increase wind turbine operational efficiency.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: March 20, 2018
    Assignee: General Electric Company
    Inventors: Vijaykumar Muppayya Hiremath, Shimnamol Padmanabhan Nair, Aswini Karteek Bommareddy, Karthikeyan Appuraj
  • Patent number: 9921339
    Abstract: The present invention is an apparatus and method of forecasting solar energy irradiance potential and subsequent photovoltaic output in a region. The apparatus and method includes collecting meteorological data for a given region and then estimating irradiance levels using parameters collected from the meteorological data. Solar energy production is then simulated using the collected meteorological data, estimated irradiance levels, and physical characteristics of a solar generating system in the given region at a predetermined time.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: March 20, 2018
    Assignee: STC.UNM
    Inventors: Anthony Robert Menicucci, Thomas P. Caudell, Andrea A. Mammoli
  • Patent number: 9915244
    Abstract: A method of operating a wind power plant, with at least one wind turbine generator connected to an electrical grid is provided. The method includes monitoring a frequency parameter and comparing it with a frequency set point, as to select a low or high frequency event and determining a power reference to the a least one wind turbine generator, based on the frequency parameter. In case a high frequency event is detected, the power reference is determined as a minimum of a selection of at least a first and a second minimum power reference. And in case a low frequency event is detected, the power reference is determined as a maximum of a selection of at least a first and a second maximum power reference, dispatching the power reference to the at least one wind turbine generator.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: March 13, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventor: Germán Claudio Tarnowski
  • Patent number: 9909449
    Abstract: Wind turbine comprising a rotor having a hub carrying one or more blades, an air intake and a nacelle, the hub being rotatably mounted on a frame and the frame extending forward into the hub, wherein an air flow passage is provided between an inside portion of the hub and the nacelle via at least one first opening to the hub.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: March 6, 2018
    Assignee: ALSTOM Renewable Technologies
    Inventors: Sebastian Valero Lafuente, Javier Bescos
  • Patent number: 9909563
    Abstract: A system and method for monitoring and controlling the deflection of rotor blades of a wind turbine so as to prevent tower strikes is disclosed. The method includes operating the wind turbine at standard pitch angle settings. Another step includes monitoring a loading condition of the wind turbine over a predetermined time period. A further step includes tracking a number of wind condition deviations of a certain magnitude occurring during a predetermined time period. The method also include altering one or more of the standard pitch settings of the rotor blades in response to the number of wind condition deviations exceeding a wind deviation threshold and/or the loading condition exceeding a loading threshold as an exceedance indicates an increased probability of rotor blade deflection. The method further includes performing one or more additional corrective actions so as to reduce the probability of a rotor blade tower strike.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: March 6, 2018
    Assignee: General Electric Company
    Inventors: Mark Lee Cook, Nadine Schuell
  • Patent number: 9909565
    Abstract: Wind turbine rotational system having several drives and a central control system (CCS), each drive comprising a motor, an electronic converter and an actuator. The CCS sends speed and torque setpoints to the electronic converters which drive the motors according to said setpoints. Operation of the system comprises: designating a drive as master and the other drives as slaves; designating, for each slave, one of the drives as reference drive; the CCS determining master speed and torque setpoints, and sending them to the master; the CCS obtaining real torque of the master; CCS obtaining real speed of each reference drive; and the CCS sending to each slave a slave speed setpoint equal to the master speed setpoint, and a slave torque setpoint equal to the real torque of the master plus a variable offset based on a difference between the master speed setpoint and the real speed of its reference drive.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: March 6, 2018
    Assignee: ALSTOM Renewable Technologies
    Inventor: Pedro Palomares Rentero
  • Patent number: 9909566
    Abstract: A device comprising a vertical axis wind turbine comprising an arm, a housing coupled to the arm, a generator housed within the housing, and a blade extending along the housing vertically.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: March 6, 2018
    Inventor: Thomas Jones
  • Patent number: 9903343
    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 27, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventor: Thomas Hjort
  • Patent number: 9906030
    Abstract: The present invention has disclosed an optimal control method for reactive voltage of wind power and photovoltaic power centralized grid connection in the field of wind power and photovoltaic power grid connection control technology, comprising: setting actuating stations used to control single wind power plant/photovoltaic power plant, setting substations used to control actuating stations and set master station used to control all the substations; master station calculates setting voltage reference Uref of each substation; adopting 3? method to process set voltage reference Uref to obtain set voltage reference interval; regulating high-side voltage of substation to make it fall in set voltage reference interval; if high-side voltage of substation does not fall in set voltage reference interval, then regulating the equipment in wind power plant/photovoltaic power plant via actuating station. The present invention guides the actual operations of electric power system.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: February 27, 2018
    Assignees: GANSU ELECTRIC POWER CORPORATION WIND POWER TECHNOLOGY CENTER, STATE GRID GANSU ELECTRIC POWER CORPORATION, STATE GRID CORPORATION OF CHINA
    Inventors: Ningbo Wang, Wenying Liu, Dan Jin, Jiaming Wang, Yanhong Ma, Cai Liang, Long Zhao, Yalong Li, Qiang Zhou, Jing Wen, Rong Huang, Rundong Ge, Jin Li, Peng Xu
  • Patent number: 9903345
    Abstract: Lubrication method and wind turbine comprising a rotor with a hub supported by a main bearing with two opposite bearing races coaxially spaced by rotatably fitted bearing rollers in a lubrication area which is sealed by oil sealing rings between the bearing races. The lubrication area comprises one or more oil inlets operatively connected to an oil supply, and one or more oil outlets. The vertical distance between the outlet(s) and the lowest point of the lubrication area is 0-0.2 times the inner diameter of the outer bearing race. The inlet (s) and the oil supply are configured to supply an oil flow not exceeding the drain capacity of the one or more outlets.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: February 27, 2018
    Assignee: XEMC DARWIND B.V.
    Inventor: Jan Willem Pasteuning
  • 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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