Wind Patents (Class 290/44)
  • Patent number: 11326578
    Abstract: A control system and control method of a wind farm allows taking into account dynamic variations in the possibilities of reactive power generation of each wind turbine with respect to maximum reactive power generation capacities. The system is configured to receive from at least one first wind turbine of the wind turbines of the wind farm a maximum reactive power limit desired lower than a minimum reactive power capacity required. The system is configured to calculate the individual reactive power setpoints for each of the at least two wind turbines of the wind farm such that the individual reactive power setpoint for the at least one first wind turbine of the wind farm does not exceed the maximum reactive power limit desired.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: May 10, 2022
    Assignee: NORDEX ENERGY SPAIN S.A.U.
    Inventors: Jose Miguel Garcia Sayes, Guillermo Beriain Guembe, Alberto Garcia Barace, Javier Gil Guruceaga, Daniel Ortiz Irigoyen, Teresa Arlaban Gabeiras, Alejandro Gonzalez Murua, Ricardo Royo Garcia, Miguel Nunez Polo
  • Patent number: 11326579
    Abstract: An adaptive dynamic planning control method and system for a large-scale energy storage station. The method comprises: setting a structure and control target parameters of an adaptive dynamic planning control system; initializing the parameters and importing an initial state of a controlled object; calculating an original wind electricity power fluctuation rate at a current moment t and smoothing the original wind electricity power according to a change rate control strategy; calculating a smoothed wind storage power fluctuation rate, a power of an energy storage system, and a state of charge (SOC) of the energy storage system; initializing and training an evaluation module and an execution module; calculating and saving a control strategy, a smoothed wind storage power fluctuation rate, an energy storage power and a (SOC) at each moment; and outputting the control strategy at each moment, the smoothed wind storage power fluctuation rate, the energy storage power and the (SOC).
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 10, 2022
    Assignees: China Electric Power Research Institute Company Limited, State Grid Corporation of China
    Inventors: Xiangjun Li, Yuting He, Jingqiong Zhang, Dong Hui, Xuecui Jia
  • Patent number: 11322943
    Abstract: A method for controlling the rebuilding of an electrical supply network, wherein the electrical supply network has a first network section and at least one further network section, at least one wind farm is connected to the first network section, the wind farm can be controlled via a wind farm control room, the first network section is coupled to the at least one further network section via at least one switching device in order to transmit electrical energy between the network sections, the at least one switching device is set up to disconnect the first network section from the at least one further network section in the event of a fault, a network control station is provided for the purpose of controlling the at least one switching device, wherein, in the event of a fault during which a network fault acting on the first network section occurs, the first network section is disconnected from the at least one further network section by the at least one switching device, the wind farm control room interchanges
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: May 3, 2022
    Assignee: Wobben Properties GmbH
    Inventor: Johannes Brombach
  • Patent number: 11319928
    Abstract: Methods, systems, and devices are disclosed for wind power generation. In one aspect, a wind power generator includes a support base; inductors positioned over the support base in a circular array; an annulus ring track fixed to the base support and providing a circular track around which the inductors are located; an annulus ring rotor placed on the annulus ring track and engaged to rollers in the circular track so that the annulus ring rotor can rotate relative to the an annulus ring track, in which the annulus ring rotor include separate magnets to move through the circular array of inductors to cause generation of electric currents; and a wind rotor assembly coupled to the annulus ring rotor and including wind-deflecting blades that rotate with the rotor and a hollow central interior for containing a wind vortex formed from deflecting wind by the blades to convert into the electric energy.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: May 3, 2022
    Assignee: EIP TECHNOLOGIES, INC.
    Inventor: Steve Burkle
  • Patent number: 11319925
    Abstract: A method for wind turbine tower damping is disclosed, as well as an associated controller and wind turbine. The method comprises determining, using one or more sensor signals, dynamic state information for a tower of a wind turbine during power production, wherein the dynamic state information comprises a tower frequency. The method further comprises determining at least one control loop gain value using the tower frequency, and generating, using the at least one control loop gain value, one or more control signals for controlling a rotational speed of a rotor of the wind turbine.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: May 3, 2022
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Fabio Caponetti, Jesper Sandberg Thomsen
  • Patent number: 11313354
    Abstract: A method for protecting a wind turbine from overloading during operation caused by a fault includes receiving, via a controller, a plurality of pitch signals from a plurality of pitch control mechanisms of a pitch system of the wind turbine, the pitch system configured to rotate a plurality of rotor blades mounted to a rotatable hub of a rotor of the wind turbine about respective pitch axes. Further, the method includes determining a collective pitch rate of the pitch system as a function of the plurality of pitch signals. The method also includes defining a minimum pitch rate threshold that varies with a speed parameter of the wind turbine. Moreover, the method includes receiving a first speed parameter of the wind turbine. In addition, the method includes comparing the collective pitch rate to the minimum pitch rate threshold for the first speed parameter. Thus, the method includes controlling the wind turbine based on the comparison.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: April 26, 2022
    Assignee: General Electric Company
    Inventors: Leonardo Cesar Kammer, Conner Brooks Shane, Dana Perry Martin
  • Patent number: 11307602
    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: November 19, 2020
    Date of Patent: April 19, 2022
    Assignee: CAUSAM ENTERPRISES, INC.
    Inventor: Joseph W. Forbes, Jr.
  • Patent number: 11306700
    Abstract: Provided is a method, computing system, and computer program product for reducing floating wind turbine loads induced by ocean waves by adjusting a blade pitch angle of at least one rotor blade of a floating wind turbine to minimize a moment imbalance at a platform top of the floating wind turbine caused by ocean wave activity.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: April 19, 2022
    Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
    Inventors: Jared Frank, Srinivas Guntur, Marco Masciola
  • Patent number: 11307549
    Abstract: A system includes a plurality of control devices that respectively control the states of a plurality of apparatuses and are connected to each other via communication lines. When each of the control devices determines a state target value of its own apparatus using the current state indicator value of the own apparatus, and the distributed controller input which is a function of the state indicator value of an apparatus adjacent to the own apparatus and the state indicator value of the own apparatus, the control gain which adjusts contribution of the distributed controller input to the state target value is determined based on a communication delay time between the control devices.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: April 19, 2022
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota School Foundation
    Inventors: Satoshi Kikuchi, Michihiro Kawanishi, Tatsuo Narikiyo, Ngoc Huynh Tran
  • Patent number: 11300107
    Abstract: Provided is a system for determining an amount of oscillating movement of a wind turbine, the wind turbine including a tower, a non-rotating upper part supported by the tower, a rotor having a rotor axis, and a generator for generating electric power. The system includes (a) a sensor unit adapted to provide a rotor speed signal indicative of a rotational speed of the rotor relative to the non-rotating upper part, (b) a filtering unit adapted to, based on the rotor speed signal provided by the sensor unit, provide a filtered signal including information associated with an oscillating movement of the wind turbine, and (c) a processing unit adapted to determine the amount of oscillating movement based on the filtered signal provided by the filtering unit. Furthermore, a wind turbine and a method are described.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: April 12, 2022
    Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
    Inventors: Samuel H. Hawkins, Gustav Hoegh
  • Patent number: 11293400
    Abstract: A feedforward control method for a wind turbine set in a wind farm, comprising: obtaining real-time operation data of a predetermined wind turbine set in a wind farm; inputting the acquired real-time operation data into a predetermined prediction model corresponding to the predetermined wind turbine set so as to acquire prediction data by means of the predetermined prediction model; according to the acquired prediction data, determining whether to start a feedforward control function for the predetermined wind turbine set so as to control the operation state of the predetermined wind turbine set on the basis of a predetermined manner of feedforward control. The method may control a wind turbine set in advance and is beneficial in the safe operation of wind turbine sets. The present invention also relates to a feedforward control device for a wind turbine set in a wind farm, a control system, a computer readable storage medium and a field group controller.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: April 5, 2022
    Assignee: BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD.
    Inventor: Fashun Ou
  • Patent number: 11293412
    Abstract: Provided is a busbar arrangement for a wind turbine generator, the wind turbine generator including a stator and a rotor arranged to rotate around an axis. The busbar arrangement includes a plurality of busbars for transporting electric power away from the generator, wherein each busbar is arranged at an individual radial distance from the axis and at an individual axial position along the axis. Furthermore, a wind turbine and a method of manufacturing a busbar arrangement is provided.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 5, 2022
    Inventor: Thorkil Munk-Hansen
  • Patent number: 11293406
    Abstract: According to the invention, the control system consists of one or more global controllers configured to receive state data from the tower structures and tendons, via sensors and control an operating state of the wind generators correspondingly in a calculation method for avoiding load peaks and/or avoiding resonances. In a preferred embodiment, a local controller is configured to also process status data of the sensors from a near field of a building around the respective local controller.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: April 5, 2022
    Inventor: Philipp Wagner
  • Patent number: 11286905
    Abstract: A method for rebuilding an electric supply grid of a grid operator by means of at least one wind power installation, wherein the electric supply grid has a first grid section and at least one further grid section, wherein the first grid section is connected to the at least one wind power installation and has a first grid nominal voltage, the first grid section is coupled to the at least one further grid section via at least one switching device in order to transmit electric energy between the grid sections, wherein the at least one switching device is set up to disconnect the first grid section from the at least one further grid section in the event of a fault, comprising the steps of operating the at least one wind power installation in an observation mode if the fault occurs, wherein the wind power installation does not feed the first grid section in the observation road and a status of the first grid section is checked, and operating the at least one wind power installation in a grid rebuilding mode if the
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: March 29, 2022
    Assignee: Wobben Properties GmbH
    Inventors: Johannes Brombach, Ingo Mackensen, Kai Busker
  • Patent number: 11286903
    Abstract: Provided is a method for starting a wind park including plural wind turbines connectable in a collector system connectable to a utility grid, the method including: starting at least one first wind turbine, each being equipped with an utility grid independent energy supply and a grid forming function, to produce electrical energy from wind energy, thereby utilizing the respective grid independent energy supply for starting; performing the grid forming function by the first wind turbine to achieve a reference voltage in the collector system; starting at least one second wind turbine and/or at least one third wind turbine to produce energy by conversion of wind energy, thereby utilizing energy provided in the collector system for starting.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: March 29, 2022
    Inventors: Paul Brian Brogan, Nikolaus Goldenbaum, Thyge Knueppel
  • Patent number: 11286909
    Abstract: A method 400 of predicting tonal noise produced by a wind turbine is disclosed.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: March 29, 2022
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Mranal Gupta, Janne-Pekka Yrjönen, Jan Johansen, Niels Christian M. Nielsen, Edgar Anahua, Kaj Dam Madsen, Jens Demtröder
  • Patent number: 11280315
    Abstract: A measurement system is provided for a wind turbine having a plurality of rotor blades mounted to a spinner at the front of a nacelle and arranged to rotate in a rotor plane. The measurement system includes a measuring device for determining a pressure at a number of pressure measurement points. The pressure measurement points are arranged in front of the rotor plane, an analysis module for generating a control signal on the basis of the pressure measurements, and output means for issuing the control signal to a controller of the wind turbine.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: March 22, 2022
    Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
    Inventors: Jimmi Andersen, Jan Martin Jensen
  • Patent number: 11274656
    Abstract: Provided is a method of determining a power curve, which specifies a correlation between wind speed and a power output of a first turbine. Wind speed is calculated based on a measurement correlation, specifies a correlation between the rotor behavior and the wind speed, derived from rotor behavior. The measurement correlation is trained using a second turbine of identical construction having a sensor. While the second turbine is operated at varying wind speeds, the sensor repeatedly records and assigns a wind speed to a simultaneously recorded rotor behavior of the second turbine to produce the measurement correlation. The power curve is produced by repeatedly and simultaneously recording a power output of the first turbine and an associated wind speed while operating the first turbine at varying wind speeds. The wind speed is calculated from rotor behavior of the first turbine based on the measurement correlation trained using the second turbine.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: March 15, 2022
    Assignee: Wobben Properties GmbH
    Inventors: Rodolphe Lebosq, Dennis Peter
  • Patent number: 11274654
    Abstract: A wind turbine and associated control method includes a controller configured with a high speed shaft brake in the generator gear train. The controller receives an input signal corresponding to rotational speed of the high speed shaft, wherein upon the high speed shaft reaching a predefined rotational speed and under a braking condition that calls for the rotor to come to a complete standstill, the controller generates an activate signal to activate the brake. An interlock system is in communication with the low speed shaft sensor and the controller and is configured to override the activate signal when the rotational speed of the low speed shaft is above a threshold value.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: March 15, 2022
    Assignee: General Electric Company
    Inventors: Justin Richard Curtis, Joseph Andrew Trzemzalski, Hammad Ahmad, Zachary Kurt Blaettler, Till Hoffmann
  • Patent number: 11268492
    Abstract: A method for operating a wind turbine comprises capturing an actual value of a fed-in power (Pact) and determining a power deviation based on the captured actual value of the fed-in power (Pact). A signal value is set for a correction of a setpoint value for the rotor blade pitch angle when one of the power deviation exceeds a predetermined maximum value and the power deviation exceeds a maximum gradient threshold value over a specified period of time. The signal value is cleared when one of the power deviation falls below a predetermined minimum value and a grid voltage value is located in a predetermined band around a specified target voltage value. A correction value (d?/dt*) is determined for the setpoint value of the rotor blade pitch angle depending on the power deviation and applied to a rotor blade pitch control when the signal value is set.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: March 8, 2022
    Assignee: Nordex Energy GmbH
    Inventors: Detlef Drossel, Ulrich Harms
  • Patent number: 11268494
    Abstract: A wind turbine is provided. The wind turbine includes a mechanical system, an electrical system and a controller. The controller is for determining an electrical capability limit of the electrical system according at least in part to one or more operating conditions of the wind turbine and one or more environment conditions of a site of the wind turbine, comparing the electrical capability limit of the electrical system and a mechanical capability limit of the mechanical system, and controlling the electrical system to operate at the smaller one of the electrical capability limit and the mechanical capability limit. A method for controlling a wind turbine comprising a mechanical system and an electrical system is also provided.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: March 8, 2022
    Assignee: General Electric Company
    Inventors: Zhuohui Tan, Bo Qu, Xiongzhe Huang, Xu Fu, Shuang Gu, Fernando Javier D'Amato
  • Patent number: 11264918
    Abstract: An isolated bus inverter system including inverter circuits and a controller. The inverter circuits include a switching array to provide a polyphase alternating current (AC) signal to an output. Each of the inverter circuits includes an energy source isolated from the other inverter circuits of the inverter circuits or a reference isolated from the other inverter circuits of the inverter circuits. The controller is configured to generate timing signals for the inverter circuits to generate the AC signals for the output based on DC signals received from one or more rectifier circuits.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: March 1, 2022
    Assignee: Kohler Co.
    Inventors: Adam Larson, Isaac S. Frampton
  • Patent number: 11261849
    Abstract: A cooling system for a shafting and a control method therefor, and a wind turbine are provided. The cooling system includes a cold air supply unit and a rotating-shaft air blow box. The rotating-shaft air blow box is mounted on an inner surface of the stationary shaft and in the shape of a circular ring-shaped box, multiple first air blow openings are uniformly distributed in a surface, facing the rotating shaft, of the rotating-shaft air blow box in a circumferential direction, to blow cold air from the cold air supply unit to the rotating shaft. Each first air blow opening is in the shape of a slit to form a jet.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: March 1, 2022
    Assignee: BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD.
    Inventors: Yang Gao, Luolin Bai, Ran Yin, Tao Fang, Kunfeng Liang
  • Patent number: 11261847
    Abstract: A wind turbine is presented. The wind turbine includes a rotor having a plurality of blades. The wind turbine further includes a shaft coupled to the rotor. Moreover, the wind turbine includes a superconducting generator coupled to the rotor via the shaft. The superconducting generator includes an armature configured to be rotated via the shaft. The superconducting generator further includes a stationary field disposed concentric to and radially outward from the armature.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: March 1, 2022
    Assignee: General Electric Company
    Inventors: David Allan Torrey, Mark Ernest Vermilyea, Siddharth Navinchandra Ashar, Alexander Kagan, Joseph John Zierer, Ernst Wolfgang Stautner, Paul St. Mark Shadforth Thompson
  • Patent number: 11258345
    Abstract: The present invention relates to a method for simultaneous operation of a plurality of chopper circuits of a wind turbine power converter, the method comprising the steps of operating a controllable switching member of a first chopper circuit in accordance with a first switching pattern, and operating a controllable switching member of a second chopper circuit in accordance with a second switching pattern, wherein the first switching pattern is different from the second switching pattern during a first time period. In order to reduce switching losses the first switching pattern may involve that the controllable switching member of the first chopper circuit is clamped during the first time period. Additional chopper circuits may be provided in parallel to the first and second chopper circuits. The present invention further relates to a power dissipation chopper being operated in accordance with the before mentioned method.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: February 22, 2022
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Lars Helle, Torsten Lund
  • Patent number: 11258262
    Abstract: Provided is a method for feeding electrical power into an electrical supply grid having a grid voltage by a wind power installation. The installation comprises a generator for generating a generator current, an active rectifier for rectifying the generator current into a rectified current, a direct voltage intermediate circuit having an intermediate circuit voltage for receiving the rectified current, a chopper circuit for diverting excess energy out of the direct voltage intermediate circuit, and an inverter for generating an infeed current for feeding into the electrical supply grid. The feed takes place in a voltage-impressing manner, so that the inverter counteracts a deviation of the grid voltage from a voltage setpoint value through an adjustment of the fed current. The active rectifier has a lower current limit to limit a fall of the rectified current to protect the generator during a change of the grid voltage amplitude or phase.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: February 22, 2022
    Assignee: Wobben Properties GmbH
    Inventors: Johannes Brombach, Eckard Quitmann, Hanna Emanuel
  • Patent number: 11255309
    Abstract: A method for operating a wind turbine connected to a power grid in response to one or more grid events occurring in the power grid includes monitoring, via one or more sensors, the power grid (such as a frequency thereof) so as to detect one or more grid events occurring in the power grid. In response to detecting one or more grid events occurring in the power grid, the method includes increasing mechanical inertia of a rotor of the wind turbine during a first time frame after one or more grid events occurs in the power grid. After the first time frame, the method includes providing a required additional power output to the power grid during a subsequent, second time frame so as to stabilize the power grid after one or more grid events occurs in the power grid.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: February 22, 2022
    Assignee: General Electric Company
    Inventor: Christoph Schulten
  • Patent number: 11245261
    Abstract: A method for controlling a wind power plant comprising a plurality of wind turbine generators, wherein the method comprises: deriving an estimated value for electrical losses in the wind power plant, deriving a measured value for electrical losses in the wind power plant, based on a difference between an aggregated power production from the plurality of wind turbine generators and a power measurement at a point of common coupling; applying the estimated value for electrical losses and the measured value for electrical losses in an active power control loop, comprising a regulator; and controlling by means of the active power control loop an active power production of the wind power plant at the point of common coupling.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: February 8, 2022
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Dumitru-Mihai Valcan, Jorge Martinez Garcia, Kouroush Nayebi, Jesper Sandberg Thomsen, Martin Ansbjerg Kjær
  • Patent number: 11243331
    Abstract: A wireless mesh network includes a group of nodes configured to predict cloud movements based on voltage time series data. A node residing in the wireless mesh network records voltage fluctuations at a site where solar power is generated. The voltage fluctuations occur when an advancing cloud reduces solar irradiance at the site, thereby reducing solar power generation. The node correlates these voltage fluctuations with other voltage fluctuations recorded by other nodes at other sites where solar power is generated. The node computes a time offset between these voltage fluctuations that corresponds to the time needed for the cloud to advance between the different sites. Based on this time offset and the locations of the various nodes, the node estimates a wind vector. The wind vector can be used to perform near-term solar forecasting by predicting when the cloud will advance to other sites and reduce solar power generation.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: February 8, 2022
    Assignee: ITRON, INC.
    Inventor: Michael Hogan Dann
  • Patent number: 11239661
    Abstract: Provided is a method for exchanging electric power with an electricity supply grid that has a grid frequency using a converter-controlled generation unit that may be a wind power installation or a wind farm, at a grid connection point. The method includes exchanging electric power depending on a control function. The electric power includes active and reactive power and the control function controls the power depending on at least one state variable of the electricity supply grid. It is possible to switch between a normal control function and a support control function, different from the normal control function, as the control function. The normal control function is used when it has been recognized that the electricity supply grid is operating stably and the support control function is used when a grid fault or an end of the grid fault has been recognized.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: February 1, 2022
    Assignee: Wobben Properties GmbH
    Inventors: Eckard Quitmann, Johannes Brombach
  • Patent number: 11235668
    Abstract: The present disclosure provides an efficient control system and method for a brushless motor with a wide working range, which are applied to an aerospace vehicle energy system. The system of the present disclosure includes a power supplying module, a first DC-DC circuit, a battery pack, a second DC-DC circuit, an anti-reverse-connection circuit, an electronic speed control (ESC), a brushless direct current motor (BLDC), an airborne controller and a communication link. Electric energy from the power supplying module is configured to charge the battery pack via the first DC-DC circuit, and electric energy of the battery pack sequentially flows through the second DC-DC circuit and the anti-reverse-connection circuit to energize the ESC, wherein output voltage of the second DC-DC circuit and throttle signal input of the ESC are controlled in real time by the airborne controller according to a power demand of an aircraft.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: February 1, 2022
    Assignee: Zhejiang University
    Inventors: Yao Zheng, Junyin Chen, Changping Du, Guanghua Song, Rui Yang, Zhixian Ye, Zekun Zhang
  • Patent number: 11236723
    Abstract: The present invention provides a system of wind turbines connected to a single unit electric generator to produce electrical power whereby the wind turbine blades rotate coaxially with a main rotor shaft instead of perpendicular to the shaft axis. In this respect, the wind turbine rotor can face the wind from any direction and does not need to be pointed into the wind to be effective, thus, eliminating the need for a yaw system. Moreover, translation of mechanical to torque of the main rotor drive allows the drive components such as the gearbox and generator to be placed near the ground of each wind turbine improving accessibility for maintenance.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: February 1, 2022
    Assignee: WiSys Technology Foundation, Inc.
    Inventor: Md Maruf Hossain
  • Patent number: 11231014
    Abstract: A method for operating a inverter-based resource connected to a power grid includes receiving one or more voltage feedback signals created by at least one component of the inverter-based resource, wherein distortion components of the one or more voltage feedback signals are more sensitive to voltage distortion created by the inverter-based resource than by external sources of voltage distortion. Further, the method includes extracting a distortion component of the one or more feedback signals having a certain phase sequence and frequency. Moreover, the method includes determining a voltage command for the power converter as a function of, at least, the distortion component. Thus, the method includes controlling the power converter based on the voltage command such that the voltage distortion created by the at least one component of the inverter-based resource is reduced in a manner that is relatively insensitive to voltage distortion created by sources external to the inverter-based resource.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: January 25, 2022
    Assignee: General Electric Company
    Inventors: Einar Vaughn Larsen, Dustin Howard, Min Naing Lwin, Ignacio Vieto Miranda
  • Patent number: 11231016
    Abstract: A method for calibrating a wind direction measurement for a wind turbine is provided. The method including: measuring plural samples of a relative wind direction representing a difference angle between a real wind direction and an orientation of a measurement equipment, in particular a direction orthogonal to a rotor blade plane, to obtain plural measured relative wind directions; deriving a measured relative wind direction change based on the measured relative wind directions; measuring plural samples of a performance parameter indicating a performance of the wind turbine; deriving a performance change based on the plural samples of the performance parameter; determining a correlation value between the measured relative wind direction change and the performance change; measuring further plural samples of the relative wind direction; and correcting the further measured relative wind directions based on the correlation value, to obtain corrected further measured relative wind directions.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: January 25, 2022
    Inventor: Torben Nielsen
  • Patent number: 11225945
    Abstract: A method for controlling an inclination of a floating wind turbine platform to optimize power production, or to reduce loads on the turbine, tower, and platform, or both, includes receiving data associated with the inclination of the floating wind turbine platform and wind speed and direction data. An angle of difference between the turbine blade plane and the wind direction is determined, where the angle of difference has a vertical component. A platform ballast system is then caused to distribute ballast to reduce the vertical component to a target angle chosen to optimize power production, or reduce turbine, tower, and platform loads, or both.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: January 18, 2022
    Inventors: Pauline Louazel, Bingbin Yu, Sam Kanner, Antoine Peiffer, Dominique Roddier
  • Patent number: 11223208
    Abstract: A hybrid power generation system is presented. The hybrid power generation system includes a generator operable via a prime mover and configured to generate an alternating current (AC) power. The hybrid power generation system further includes a first power converter electrically coupled to the generator, where the first power converter includes a direct current (DC) link. Furthermore, the hybrid power generation system includes a DC power source configured to be coupled to the DC-link. Moreover, the hybrid power generation system also includes a second power converter. Additionally, the hybrid power generation system includes an integration control sub-system operatively coupled to the first power converter and the DC power source. The integration control sub-system includes at least one bypass switch disposed between the DC power source and the DC-link and configured to connect the DC power source to the DC-link via the second power converter or bypass the second power converter.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: January 11, 2022
    Assignee: General Electric Company
    Inventors: Govardhan Ganireddy, Arvind Kumar Tiwari, Yashomani Y. Kolhatkar
  • Patent number: 11220999
    Abstract: One embodiment provides a system for facilitating fault diagnosis. During operation, the system collects current signals associated with a physical object which comprises a rotating machine. The system demodulates the collected signals to obtain current envelope signals, which eliminates fundamental frequencies and retains fault-related frequencies. The system resamples the current envelope signals, which converts the fault-related frequencies to constant frequency components. The system enlarges, by a fault-amplifying convolution layer, the resampled envelope signals to obtain fault information. The system provides the fault information as input to a deep convolutional neural network (CNN). The system generates, by the deep CNN, an output which comprises the fault diagnosis for the physical object.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: January 11, 2022
    Assignee: Palo Alto Research Center Incorporated
    Inventor: Fangzhou Cheng
  • Patent number: 11208984
    Abstract: Provided are a method and an apparatus for controlling a pitch of a wind turbine under an extreme turbulence wind condition. The method includes: obtaining a first pitch parameter for a current time; obtaining a historical second pitch parameter in a predetermined time period before the current time; determining an updated threshold based on the obtained historical second pitch parameter; comparing the first pitch parameter for the current time with the determined updated threshold; and updating the first pitch parameter for the current time based on a result of the comparison.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: December 28, 2021
    Assignee: XINJIANG GOLD WIND SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Yongming Li, Shuchun Zhao
  • Patent number: 11204017
    Abstract: Embodiments herein describe validating an emergency stop signal before activating a brake within a wind turbine. The emergency stop signal is received from a control node of a plurality of control nodes distributed throughout the wind turbine, and the emergency stop signal indicates that the wind turbine should be shut down. The wind turbine is shut down by transmitting a shutdown signal to the plurality of control nodes. Upon determining there is no indication a person is present within the wind turbine, the emergency stop signal is validated. Additionally, upon determining the emergency stop signal is valid, a brake within the wind turbine is activated to bring the rotor to a stop.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: December 21, 2021
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Lars Rohrmann Andersen, Peter Gjellerup Schiønning, David Steele
  • Patent number: 11204019
    Abstract: This system includes a belt drive system for a wind turbine generator comprising: a tower having a wind turbine wheel rotatably attached to the tower; a generator platform attached to the tower; a generator supported by the generator platform; and, a turbine drive belt adapted to engaged with the wind turbine wheel and the generator to transfer rotational energy from the wind turbine wheel to the generator to generate electricity.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: December 21, 2021
    Inventor: Gerald L. Barber
  • Patent number: 11204018
    Abstract: A method of controlling a turbine of a floating wind turbine structure to reduce fatigue of moorings of the floating wind turbine structure includes curtailing the turbine based on a pitching motion of the floating wind turbine structure and on a wind direction at the floating wind turbine structure relative to an orientation of the moorings of the floating wind turbine structure. Optionally, the curtailment may be further based on a degree of displacement of the floating wind turbine structure from a reference location.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: December 21, 2021
    Assignee: HYWIND AS
    Inventors: Finn Gunnar Nielsen, Bjørn Skaare
  • Patent number: 11199172
    Abstract: Methods, systems, and devices are disclosed for wave power generation. In one aspect, a wave power generator device includes a stator assembly and a rotor assembly encased within a tube frame. The stator assembly includes an array of inductor coils in a fixed position within a cavity of the tube frame and a plurality of bearings coupled to the tube frame. The rotor assembly includes a turbine rotor having a central hub and peripheral blades coupled to a high inertia annular flywheel that is moveably engaged with the bearings of the stator assembly, and an array of magnets arranged to be evenly spaced and of alternating axial polarity from one another extending from the annular flywheel into the cavity between the array of inductor coils, such that electric currents are produced based on magnetic field interaction of the magnets with the inductor coils during the rotation of the annular flywheel.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: December 14, 2021
    Assignee: EIP TECHNOLOGIES, INC.
    Inventor: Steve Burkle
  • Patent number: 11193472
    Abstract: A method of controlling a wind power plant for generating electrical power from wind is provided. The plant comprises a rotor having rotor blades with adjustable blade angles and the rotor can be operated at a variable rotational speed. The method includes controlling the plant in a partial load mode when wind speed is below a nominal speed and, controlling the plant in a storm mode when the wind speed is above a storm commencement speed. An output power of the plant in the partial load mode and storm mode is adjusted according to an operating characteristic curve that determines a relationship between the rotational speed and the output power. A partial load characteristic curve is used as the operating characteristic curve for controlling the power plant in partial load mode, and a storm mode characteristic curve is used as the operating characteristic curve for controlling the plant in storm mode.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: December 7, 2021
    Assignee: Wobben Properties GmbH
    Inventors: Ralf Messing, Mustafa Onur Kimilli, Daniel Senftleben
  • Patent number: 11196262
    Abstract: A method for feeding electrical power into an electrical supply grid by means of at least one wind power installation at a grid connection point, wherein the at least one wind power installation has an aerodynamic rotor with rotor blades and the rotor has a moment of inertia and can be operated with variable rotor speed, the at least one wind power installation has a generator for generating a generator power, multiple energy generators feed power into the electrical supply grid and multiple consumers take power from the electrical supply grid, so that a power balance in the electrical supply grid between the power fed in and the power taken is produced and is positive if more power is fed in than is taken, and the method comprises the steps of: feeding in a basic electrical power in dependence on available wind power, specifying a supporting power to be additionally fed in and additionally feeding in the specified supporting power to be additionally fed in for supporting the electrical supply grid, an amount
    Type: Grant
    Filed: November 23, 2017
    Date of Patent: December 7, 2021
    Assignee: Wobben Properties GmbH
    Inventor: Johannes Brombach
  • Patent number: 11193470
    Abstract: A method for operating a wind turbine, in particular at a location characterized by a cold climate is provided. The method includes, specifying an air density at a location of the wind turbine, setting a blade angle of an adjustable rotor blade based on an output power, torque and/or rotor speed. The method includes setting the blade angle as a function of a at pitch characteristic curve which specifies the blade angle as a function of the output power, the torque and/or the rotor speed and as a function of the air density. According to the pitch characteristic curve, the blade angle has a minimum as a function of the air density in a region of a reference density of an atmosphere at the location which is characterized by a cold climate.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: December 7, 2021
    Assignee: Wobben Properties GmbH
    Inventors: Ralf Messing, Stefanie Bott, Hendrik Schnell
  • Patent number: 11196260
    Abstract: A method for operating a power generation system that supplies real and reactive power to a grid includes receiving a reactive power demand made on the power generation system at an operating state of the power generation system and a grid state. Further, the method includes decoupling reactive power control and voltage control between a generator and a reactive power compensation device so as to reduce an oscillatory response of a reactive power output from the reactive power compensation device and the generator. Moreover, the method includes operating, via a device controller, the reactive power compensation device in a reactive power control mode to generate at least a portion of the reactive power demand.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: December 7, 2021
    Assignee: General Electric Company
    Inventors: Jayanti Navilgone Ganesh, Arvind Kumar Tiwari, Kasi Viswanadha Raju Gadiraju, Igor Berroteran, Robert Gregory Wagoner, Cornelius Edward Holliday, III
  • Patent number: 11181098
    Abstract: The present invention relates to an offshore wind turbine on a floating support (1) comprising either a rotor with a horizontal rotation axis (horizontal-axis wind turbine HAWT) or a rotor with a vertical rotation axis (vertical-axis wind turbine VAWT) with the rotor being mounted on a floating support having a principal axis. According to the invention, the principal axis of the floating support is offset by an angle ? with respect to either the axis of a tower carrying the horizontal-axis rotor or to the rotation axis of the vertical-axis rotor.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: November 23, 2021
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Claude Mabile, Jean-Christophe Gilloteaux
  • Patent number: 11180249
    Abstract: In an aspect, in general, a spooling apparatus includes a filament feeding mechanism for deploying and retracting filament from the spooling apparatus to an aerial vehicle, an exit geometry sensor for sensing an exit geometry of the filament from the spooling apparatus, and a controller for controlling the feeding mechanism to feed and retract the filament based on the exit geometry.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: November 23, 2021
    Assignee: FLIR DETECTION, INC.
    Inventors: Jason S. Walker, John W. Ware, Samuel A. Johnson, Andrew M. Shein
  • Patent number: 11181096
    Abstract: Controlling a wind turbine comprising a wind direction sensor, a yawing system, and a control system for turning the wind turbine rotor relative to the wind. Over one or more time intervals a data set comprising a direction of the wind relative to the wind turbine as measured by the wind direction sensor and a wind power parameter determined as one of a power, a torque, or a blade load of the wind turbine are obtained. The data sets are sorted into a number of bins of different intervals of wind power parameter. or each power bin, a statistical representation of the wind power parameter as a function of the relative wind direction is determined and then used in estimating a wind direction offset corresponding to the relative wind direction where the wind power parameter attains a peak value. The relative wind direction is then adjusted as a function of the set of wind direction offsets to yield more accurate wind direction data which can be used in controlling the turbine.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: November 23, 2021
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventor: Johnny Nielsen
  • Patent number: 11174840
    Abstract: A wind power plant supplies power to a utility grid in accordance with an active power reference, where the wind power plant comprises a plurality of wind turbine generators and a power plant controller arranged to send an active power set point to the wind turbine controller of each of the plurality of wind turbine generators.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: November 16, 2021
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Steve Jessen, Søren Kappelgaard, Jacob Barsøe Kjærgaard, Kouroush Nayebi, Mads Rajczyk Skjelmose, Mu Wei