Wind Patents (Class 290/44)
  • Patent number: 10122121
    Abstract: A connector is configured to be removably engaged with and locked to an inlet. The connector comprises a locking member and a release member. The locking member is configured to impose a force on an inlet blade so as to lock the connector to the inlet when the connector is fully inserted into the inlet. The locking member comprises a compressible portion having an opening that is sufficiently large to allow the inlet blade to slide through under pressure but sufficiently small to form at least one contact point between the inlet blade and the compressible portion in its uncompressed state so as to impose the force on the inlet blade. The release member is configured to release the force imposed by the locking member on the inlet blade so as to disengage the connector from the inlet.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: November 6, 2018
    Assignee: VOLEX PLC
    Inventors: Mui Lian Jessica Toh, Kar Boon Chua
  • Patent number: 10116138
    Abstract: In various embodiments of the present disclosure, there is provided a method for controlling a reactive current injection in a wind power plant during a grid fault. According to an embodiment, the method includes measuring an amount of reactive current to be provided by the wind power plant to the grid during the grid fault. The method further includes determining a difference between a given required reactive current contribution from the wind power plant and the amount of reactive current to be provided by the wind power plant to the grid during the grid fault. According to an embodiment, the method includes controlling a plurality of wind turbine generators in the wind power plant to generate additional reactive current according to a reactive current reference generated based on the difference. A corresponding wind power plant is further provided.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: October 30, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Abdul Saboor, Manoj Gupta
  • Patent number: 10113533
    Abstract: The present disclosure is directed to a system and method for operating a wind turbine in response to one or more grid events or faults occurring in a power grid. The method includes monitoring, via one or more sensors, a grid voltage of the power grid so as to detect one or more grid events occurring in the power grid. In response to detecting at least one grid event, a controller determines an operating catch point for the wind turbine component and applies a torque demand to the wind turbine component when the operating catch point is reached. Further, the torque demand may be based on an initial torque demand acting on the wind turbine component before the one or more grid events occurred. Therefore, applying the torque demand to the wind turbine component is configured to reduce oscillations occurring in the component caused by one or more grid faults.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: October 30, 2018
    Assignee: General Electric Company
    Inventor: Detlef Menke
  • Patent number: 10107262
    Abstract: Method of operating a wind turbine rotational system having a plurality of drives and a central control system (CCS), each drive having a motor and an electronic converter. The CCS sends speed and torque setpoints to the electronic converters, and the electronic converters drive the motors in accordance with said setpoints. The method comprises designating one of the drives as master drive and the other drives as slave drives. The method also comprises the CCS determining a master speed setpoint and a master torque setpoint, and sending said setpoints to the master drive. The method further comprises the CCS obtaining the real torque and speed of the motor of the master drive and sending a slave speed setpoint and a slave torque setpoint to each slave drive, said slave speed setpoint based on the master speed setpoint and said slave torque setpoint equal to the obtained real torque of the master drive.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: October 23, 2018
    Assignee: GE RENEWABLE TECHNOLOGIES WIND B.V.
    Inventor: Pedro Palomares Rentero
  • Patent number: 10107261
    Abstract: A system and method for reducing oscillation loads of a wind turbine induced by high turbulence and/or combined with other environmental conditions are provided. The method includes determining at least one wind parameter at the wind turbine; monitoring an operating condition of the wind turbine; determining, by a processor, a variance of at least one of the monitored operating condition or a plurality of the wind parameters, wherein the variance is indicative of an oscillation occurring at one or more wind turbine components; determining, by a processor, an operating set point based on the variance; and, operating the wind turbine based on the operating set point when the variance indicates that the oscillation has a frequency within a certain frequency band so as to modify the frequency, wherein the modified frequency is outside of the frequency band and reduces oscillation loads occurring at the one or more wind turbine components.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: October 23, 2018
    Assignee: General Electric Company
    Inventors: Danian Zheng, Xiongzhe Huang, William Edwin Holley, Conner B. Shane, Raveendra Penmatsa, Jignesh Govindlal Gandhi, Timothy Botsford Cribbs
  • Patent number: 10110139
    Abstract: A matrix converter includes a power converter circuit connectable on one side thereof with an alternating-current supply via a high-frequency filter and connectable on another side thereof with an alternating-current motor; a snubber circuit connected with a one-side line for connecting the high-frequency filter and the power converter circuit; a discharge switch discharging a charge accumulated in the snubber circuit depending on a voltage of the snubber circuit; and a control circuit configured to execute controlling the power converter circuit on the basis of a carrier frequency in test such that a test voltage is applied to the alternating-current motor, changing the carrier frequency in test on the basis of an operation state of the discharge switch, and determining constants of the alternating-current motor on the basis of a response state of the alternating-current motor at the time when the test voltage is applied.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: October 23, 2018
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Toshihiro Hanada, Shinichi Akimoto, Hiroyuki Imayoshi, Keisei Inoki
  • Patent number: 10103661
    Abstract: A wind power plant is provided. The wind power plant comprises at least one wind turbine and a power plant controller. The power plant controller is configured to detect whether a grid voltage exceeds a predefined threshold, and if it has detected that the grid voltage exceeds the predefined threshold, the power plant controller sends a reactive power reference to the at least one wind turbine, thereby causing the at least one wind turbine to reduce its reactive power output in response to the reactive power reference.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: October 16, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Peter Frederick Mayer, Manoj Gupta
  • Patent number: 10100810
    Abstract: In a disclosed system, yaw rotation is generated by motors, the output torque of which is maintained substantially constant when the motor speed is within a predetermined range, to reduce the variation in the output torque. In another system, yaw rotation is generated by pinion gears each controlled by a motor mounted on the tower of the generator and arranged to rotate a main gear wheel attached to the nacelle. To prevent wear on the motors arising from differences in backlash between the pinion gears and the main gear wheel, each motor is controlled to generate a low output torque until all pinion gears have engaged the main gear wheel, after which the full output torque is applied to all motors. In a further system, braking is arranged to be provided either by mechanical brakes or by generating a counter-torque in the motors, in dependence on the sensed external load.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: October 16, 2018
    Assignee: Vestas Wind Systems A/S
    Inventors: Thomas Frederiksen, Lars Vermund Rasmussen
  • Patent number: 10100811
    Abstract: An arrangement for determining a d-component (Idref, I*d) of a reference current in a d-q coordinate system for reducing noise of a wind turbine, the arrangement including a noise/vibration determination module for determining noise/vibration components of oscillations of at least one wind turbine component, and a processing block for calculating a first type of the d-component of the reference current based on the noise/vibration component output by the noise/vibration determination module, is provided.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: October 16, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Heng Deng, Nuno Miguel Amaral Freire
  • Patent number: 10093428
    Abstract: A propulsion system includes an electric propulsor and a gas turbine engine. The propulsion system also includes an electric machine coupled to a rotary component of the gas turbine engine generating a voltage at a baseline voltage magnitude during operation of the gas turbine engine. An electric communication bus is provided electrically connecting the electric machine to the electric propulsor. The propulsion system additionally includes a means for providing a differential voltage to the electric propulsor equal to about twice the baseline voltage magnitude.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: October 9, 2018
    Assignee: General Electric Company
    Inventors: Thomas Kupiszewski, Brandon Wayne Miller, Randy M. Vondrell
  • Patent number: 10094360
    Abstract: The present invention relates to a control method for a wind turbine whereby it is possible to detect situations in which the machine is not working at its maximum performance point, wherein in addition, once these situations have been detected, the control method of the present invention allows to perform an automatic correction of the control parameters and to return the turbine to its optimum operating point.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: October 9, 2018
    Assignee: ACCIONA WINDPOWER, S.A.
    Inventors: Teresa Arlaban Gabeiras, Diego Otamendi Claramunt, Jose Miguel Garcia Sayes, Alfonso Ruiz Aldama, Alberto Garcia Barace, Oscar Luquin Hermoso de Mendoza, Alejandro Gonzalez Murua, Miguel Nunez Polo
  • Patent number: 10088838
    Abstract: A method for diagnostic monitoring of a wind turbine generator system, said wind turbine generator system comprising a generator, a drive train, and a number of sensors for providing signals and a control system. The method comprising the selection of three sets of signals from said sensors. From the three sets of signals three conditioned sets of signals are obtained by high pass filtering said first set of signals, low pass filtering the second set of signals, and forming a moving average value on the third set of signals. Based on each of said first, second and third set of conditioned signals an evaluation is performed in order to determine a fault, where said evaluation comprises comparing the first, second and third set of conditioned signals with reference values. If said comparison indicates a fault an alarm is set.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: October 2, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Shu Yu Cao, Bing Li, Anshuman Tripathi, Hock Heng Thia, Rasool Beevi D-O Mohamed Arif, Kheng Hong Ang
  • Patent number: 10084403
    Abstract: A power supply system, including an energy module, a controlled object, an active power controller, and an inertia-synchronization controller. The input end of the energy module operates to acquire external energy, a first output end of the energy module is connected to the controlled object, and the energy module operates to transform the acquired external energy into electric energy, or transform electric energy into electric energy having a different frequency therefrom. The input end of the active power controller is connected to a second output end of the energy module, the output end of the active power controller is connected to the controlled object, and the active power controller operates to control output active power of the controlled object. The input end of the inertia-synchronization controller operates to connect with an AC system. The output end of the inertia-synchronization controller is connected to the controlled object.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: September 25, 2018
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Xiaoming Yuan, Jiabing Hu, Wei He, Xuejun Xiong
  • Patent number: 10082194
    Abstract: Disclosed is a method for operating a drive train having a drive shaft (2), a prime mover (4) connected to an electrical grid (12), and a differential gearing (3) having a total of three input and output elements, an output element being connected to the drive shaft (2), one input element to the prime mover (4) and a second input element to a differential drive (5). A work machine (1) is connected to the drive shaft (2) and a portion of the performance of the work machine (1) is dissipated by a choke (22) or diverted by a valve, a flap or a bypass (32).
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: September 25, 2018
    Inventor: Gerald Hehenberger
  • Patent number: 10078318
    Abstract: A power flow control system for an interconnected power system, the interconnected power system comprising a plurality of electrical subsystems; an abstract framework configured to work as a utility maximizer under constraints (that applies to the electrical subsystems by specifying their capabilities, expected behavior and a simplified view of their internal state); and a plurality of agents. Each agent is responsible of one or a plurality of the electrical subsystems, comprises means configured to express an internal state of the electrical subsystem within a common system of coordinates, and has communication means configured to communicate among agents according to a protocol. The abstract framework means enables a composition of a set of the interconnected electrical subsystems into a further subsystem for which a further internal state is expressed within the same common system of coordinates used before, the further internal state being communicated with other agents according to the protocol.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: September 18, 2018
    Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Jean-Yves Le Boudec, Andrey Bernstein, Mario Paolone
  • Patent number: 10079501
    Abstract: A battery control device controlling an operation of a battery connected to a power system includes detection means that detects battery-related information showing a state of the battery, or a state of an interconnection point of the power system and the battery, first communication means that transmits a detection result of the detection means to an external device, and executes reception processing to receive operation control information to control the operation of the battery from the external device at a predetermined time interval, and control means that executes battery operation control processing to control the operation of the battery based on a state of the power system and based on the operation control information received by the first communication means, at a time interval shorter than the predetermined time interval.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: September 18, 2018
    Assignee: NEC Corporation
    Inventors: Koji Kudo, Hisato Sakuma
  • Patent number: 10075011
    Abstract: An active converter connected to an electric machine, including arresting circuits to activate a voltage arresting function from a first point-in-time, and which is configured to only activate a load dump reaction upon activation conditions from a second point-in-time, the activation conditions include that it is determined that at the second point-in-time, a supply-side voltage potential applied to an exciter winding of the electric machine is between the voltage potential applied at the first DC voltage terminal and a ground potential, if the exciter winding is disconnected from the voltage potential of the vehicle electrical system voltage and/or a current flowing through the exciter winding is below a current threshold value and/or after an initial activation of a load dump reaction, after which further load dump reactions were activated, more than a predefined period of time has elapsed and/or more than a predefined number of load dump reactions were activated.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: September 11, 2018
    Assignee: SEG AUTOMOTIVE GERMANY GMBH
    Inventor: Paul Mehringer
  • Patent number: 10072633
    Abstract: A method for controlling the operation of a wind turbine which includes a mechanical drive train, an electric generator being mechanically connected to the drive train, and a power converter being electrically connected to the generator is provided. The method comprises (a) determining a frequency of an AC output voltage signal provided by the power converter; (b) recognizing, whether there has been a modification of the determined frequency with respect to a previously determined frequency, which modification is larger than a given threshold; (c) if the modification of the determined frequency is larger than the given threshold, changing a power reference signal for the wind turbine; (d) providing the changed power reference signal to a controller of the wind turbine; and (e) controlling the operation of the wind turbine on the basis of the changed power reference signal.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: September 11, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Paul Brian Brogan, Nikolaus Goldenbaum, Jan Thisted
  • Patent number: 10074978
    Abstract: A method for controlling a modular converter connected to an electrical grid for active power filtering the electrical grid to compensate for a load connected to the electrical grid, comprises: receiving an actual load current and an actual converter state of the modular converter; determining, from the actual load current and a history of previous load currents, a sequence of future load currents over a prediction horizon; predicting a sequence of future converter states of the modular converter and a sequence of manipulated variables for the modular converter over the prediction horizon by solving an optimization problem based on the actual converter state and the future load currents by minimizing an objective function mapping control objectives to a scalar performance index subject to the dynamical evolution of a prediction model of the modular converter and subject to constraints; and applying a next switching state, which is determined from a first element of the sequence of manipulated variables, to th
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: September 11, 2018
    Assignee: ABB Schweiz AG
    Inventors: Tobias Geyer, Wim Van-Der-Merwe, Vedrana Spudic, Georgios Darivianakis
  • Patent number: 10075114
    Abstract: The present subject matter is directed to a system and method for operating an electrical power circuit connected to a power grid. The electrical power circuit has a power converter electrically coupled to a generator. The method includes monitoring a rotor speed of the generator during operation of the electrical power circuit. The method also includes increasing an operating range of the rotor speed of the generator. Further, the method includes determining at least one of a line-side voltage of a line-side converter of the power converter or a rotor-side voltage of a rotor-side converter of the power converter during operation of the electrical power circuit. Another step include controlling, via a converter controller, a DC link voltage of a DC link of the power converter as a function of one or more of the line-side voltage, the rotor-side voltage, and/or the rotor speed.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: September 11, 2018
    Assignee: General Electric Company
    Inventors: Harold Robert Schnetzka, Anthony Michael Klodowski, Sidney Allen Barker
  • Patent number: 10065738
    Abstract: Tethered unmanned aerial vehicle (TUAV) includes at least one wing fixed to a fuselage. The wing is comprised of an airfoil shaped body capable of producing lift in response to a flow of air across a major wing surface, and can include at least one flight control surface, such as an aileron. One or more buoyancy cell is disposed within the fuselage for containing a lighter than air gas to provide positive buoyancy for the TUAV when the TUAV is disposed in air. A tether attachment structure facilitates attachment of the TUAV to a tether which is secured to an attachment point for securing the TUAV to the ground when aloft. A wind-powered generator is integrated with the TUAV and configured to generate electric power in response to the flow of air across the least one wing when the TUAV is aloft.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: September 4, 2018
    Assignee: Harris Corporation
    Inventors: William R. Palmer, Daniel L. Schlig, Timothy F. McLellan
  • Patent number: 10069303
    Abstract: A power generation system is provided. The system includes a bus, at least two converters, an energy-type energy storage unit (ES), a power-type energy storage unit (PS) and a controller. The ES and the PS are coupled in parallel to the bus through corresponding converters of the at least two converters. The controller is configured to control the ES and the PS through the corresponding converters in at least two conditions during a charging mode and a discharging mode: when a power for the ES and PS is below a power threshold, control the power to flow between the ES and the bus; and when the power is above the power threshold, control a part of the power to flow between the ES and the bus and another part of the power to flow between the PS and the bus. And a method for generating power is also provided.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: September 4, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Tong Zhao, Rong Li, Xu Fu, Bernard P. Landa
  • Patent number: 10066602
    Abstract: A method of operating a wind power installation is disclosed. In the method, a network frequency of an electrical network is measured and an amount of power delivered to the electrical network is controlled by at least maintaining the amount of power delivered without changing the power when the network frequency is between a rated frequency for the electrical network and a deadband frequency. Further, the amount of power is increased by a first amount when the network frequency is between the deadband frequency and a control-band frequency, whereby the first amount is proportional to a difference between the network frequency and the deadband frequency. In addition, the amount of power delivered is increased by a second amount when the network frequency is less than the control-band frequency. The second amount is a preset amount of power that is determined based on a difference between the control-band and deadband frequencies.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: September 4, 2018
    Assignee: Wobben Properties GmbH
    Inventors: Alfred Beekmann, Wolfgang De Boer
  • Patent number: 10063061
    Abstract: A method for feeding electric power into an electric supply network by means of a wind park comprising several wind turbines. The method comprises the steps of feeding the electric power at a network connection point, recording at least one network state parameter at the network connection point by means of a park control unit, checking the supply network for the presence of a transient process and sending, and/or sending at an increased clock rate, the values measured by the park control unit and/or the control values determined by the park control unit to the wind turbines, once the presence of a transient process has been detected.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: August 28, 2018
    Assignee: Wobben Properties GmbH
    Inventor: Matthias Bartsch
  • Patent number: 10063060
    Abstract: The invention relates to a method for feeding electric power from at least one wind power installation or of a wind farm into an electric supply system having a line voltage and a grid frequency, wherein the method for feeding electric active power and electric reactive power is prepared and the active power that is fed in can be adjusted by means of an active power control as a function of a grid state and/or the reactive power that is fed in can be adjusted by means of a reactive power control as a function of at least one grid state and the active power control or the reactive power control respectively specify a target value that is to be fed in, which value is adjusted by means of an adjustment function as a function of at least one grid state, wherein the adjustment function is specified with the help of points of support, which points are defined by pairs of values each of which comprise a value for the active power or the reactive power respectively, and a value for the grid state.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: August 28, 2018
    Assignee: Wobben Properties GmbH
    Inventors: Alfred Beekmann, Kai Busker
  • Patent number: 10063176
    Abstract: A method for controlling the operation of a wind turbine is provided. The method includes (a) receiving an active power reference signal) and an active power feedback signal; (b) determining, based on the active power reference signal and the active power feedback signal, a first voltage control signal and a power controller frequency signal; (c) determining, based on the power controller frequency signal, a second voltage control signal; (d) determining, based on the frequency reference signal, a frequency controller frequency signal; (e) determining, based on the power controller frequency signal and the frequency controller frequency signal, an actual angle signal being indicative for an actual angle of a rotating dq reference frame; and (f) controlling the operation of a power converter of the wind turbine based on the first voltage control signal, the second voltage control signal, and the actual angle signal.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: August 28, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Paul Brian Brogan, Nikolaus Goldenbaum
  • Patent number: 10063093
    Abstract: The invention relates to a method for controlling a wind turbine that comprises a generator, is provided to feed electrical power into an electricity supply grid but has not yet been connected to the electricity supply grid, comprising the steps: generating electrical power using the generator and supplying electrical elements of the wind turbine with the power generated, and to a wind turbine for generating electrical power from the wind and for feeding the electrical power generated into an electricity supply grid, wherein a method according to one of the preceding claims is carried out.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: August 28, 2018
    Assignee: Wobben Properties GmbH
    Inventor: Alfred Beekmann
  • Patent number: 10054108
    Abstract: A method for controlling a wind turbine system is provided. The wind turbine system includes a power conversion assembly for converting electrical power into a converted electrical power. The method includes monitoring a power extraction parameter, wherein the power extraction parameter is indicative of the power extracted by the wind turbine system from the wind prior to being converted in the power conversion assembly. The method further includes controlling one or more operational variables of the wind turbine system in response to monitoring the power extraction parameter.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: August 21, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Werner Barton, Hartmut Scholte-Wassink
  • Patent number: 10056752
    Abstract: A rotary electric machine for a vehicle is provided. The rotary electric machine includes a power system circuit which has a power element and is grounded via a first ground terminal and a first connecting line and a control system circuit which controls the power system circuit and is grounded via a second ground terminal and a second connecting line.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: August 21, 2018
    Assignee: DENSO CORPORATION
    Inventors: Harumi Horihata, Tadatoshi Asada, Takahisa Koyasu
  • Patent number: 10054510
    Abstract: A method of calibrating a load measurement apparatus for measuring a load on a wind turbine blade on the basis of strain data based on strain of a wind turbine blade includes: a strain-data acquisition step of, during a startup of a wind turbine, obtaining a plurality of the strain data for each of a plurality of conditions among which at least one of an azimuth angle or a pitch angle of the wind turbine blade is different from one another; a theoretical load-value acquisition step of obtaining a theoretical load value applied to the wind turbine blade due to own weight of the wind turbine blade, for each of the plurality of conditions, on the basis of the azimuth angle and the pitch angle of the wind turbine blade in each of the plurality of conditions; and a calibration-parameter calculation step of calculating a calibration parameter representing a relationship between the strain data obtained by the load measurement apparatus and the load on the wind turbine blade, on the basis of a correlation between ea
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: August 21, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Mitsuya Baba, Wakako Ariki
  • Patent number: 10046646
    Abstract: A power conversion system including a DC main power supply for supplying a DC voltage, boosting circuits for performing a retrogression operation of boosting the DC voltage and comprising driving circuits, an inverter circuit for converting the DC voltage into an AC voltage, a motor/generator for receiving the AC voltage, and a control circuit for outputting a control signal to the driving circuits and stopping an operation of a faulty boosting circuit of the boosting circuits when one of the boosting circuits is faulty, for setting power control values depending on a number of remaining non-faulty boosting circuits of the boosting circuits, and for controlling the remaining non-faulty boosting circuits and the inverter circuit based on the power control values, wherein the inverter circuit and the boosting circuits perform a regeneration operation of supplying regeneration power to the DC main power supply, peripheral equipment, and/or a DC auxiliary power supply.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: August 14, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Futoshi Yamane, Masami Ishikawa, Yoshinari Murayama, Mitsutoshi Muraoka, Taro Yoshida, Kenji Furusawa
  • Patent number: 10050447
    Abstract: A multi-farm wind power dispatch management system is provided which includes wind turbine dispatch controllers for controlling wind power dispatch of respective wind farm components and wind farm dispatch management systems for receiving respective wind farm component operating parameters and generating respective farm-level operating parameters. The system also includes group dispatch management systems for receiving the farm-level operating parameters and generating respective group level operating parameters.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: August 14, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Rajni Kant Burra, Avijit Saha, Venkatarao Ryali, Govardhan Ganireddy, Akshay Krishnamurty Ambekar, Deepak Raj Sagi
  • Patent number: 10051345
    Abstract: A system of a machine is provided. The system having: a network of a plurality of sensing/control/identification devices distributed throughout the machine, at least one of the plurality of sensing/control/identification devices associated with at least one sub-system component of the machine and operable to communicate through a plurality of electromagnetic signals; shielding surrounding at least one of the sensing/control/identification devices to contain the electromagnetic signals proximate to the at least one sub-system component; and a remote processing unit operable to communicate with the network of the sensing/control/identification devices through the electromagnetic signals, wherein the at least one of the plurality of sensing/control/identification devices has internal memory independent of the remote processing unit, the internal memory having historical data corresponding to the least one sub-system component.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: August 14, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Joseph V. Mantese, Kurt J. Sobanski, Brian L. McCabe, Joseph Zacchio
  • Patent number: 10050573
    Abstract: A wind power generation system and a control method thereof are provided herein. The wind power generation system includes a doubly-fed generator, a generator-side converter, a grid-side converter and an auxiliary converter. The doubly fed generator includes a stator winding and a rotor winding. The stator winding is coupled to a grid. The generator-side converter is coupled to the rotor winding. The grid-side converter is coupled between the generator-side converter and the grid. The auxiliary converter includes a first side and a second side. The first side is coupled to the stator winding. The second side is coupled between the generator-side converter and the grid-side converter. The generator-side converter, the grid-side converter and the auxiliary converter use the same DC bus.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: August 14, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chang-Yong Wang, Fei Lu, Hai-Fen Xue, Li Chen, Liang Cao
  • Patent number: 10051717
    Abstract: Disclosed herein is a wind turbine rotor which includes a plurality of blades and a hub root, wherein at least one blade is provided with at least one electrostatic noise grounding system. The electrostatic noise grounding system includes an insulated rod having a first end and a second end, a conductive core passing through the insulated rod, a first conductive element connected to the conductive core at the first end of the insulated rod, and a second conductive element competed to the conductive core at the second end of the insulated rod. The electrostatic noise grounding system is secured to a portion of the rotor (e.g., blade bearing housing or blade bearing housing bolted connection) such that the first conductive element is in direct physical contact with at least a portion of the surface of at least one blade and the second conductive element is in direct physical contact with at least a portion of the surface of the hub root.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: August 14, 2018
    Assignee: SCHUNK CARBON TECHNOLOGY, LLC
    Inventors: Kenneth McKay, Robert Hefner
  • Patent number: 10044249
    Abstract: The present invention relates to a rotary electric machine formed by a stator assembly and a rotor assembly arranged such that they rotate relatively with respect to one another, the stator assembly comprising at least a first stator and a second stator, and the rotor assembly comprising at least a first rotor and a second rotor, the first stator, the first rotor, the second stator and the second rotor being arranged consecutively in a coaxial distribution.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: August 7, 2018
    Inventor: Santiago Camorera Gangoiti
  • Patent number: 10041469
    Abstract: A method of maintaining a power generating apparatus includes a separation step of separating a mooring line and a cable from a floating body of a first floating-body type wind turbine power generating apparatus including a maintenance-target section; a retention step of retaining the mooring line and the cable by a floating-body structure, after the separation step; a first transfer step of transferring the first floating-body type wind turbine power generating apparatus from the mooring position, after the separation step; a second transfer step of transferring a second floating-body type wind turbine power generating apparatus having no maintenance-target section to the mooring position; and a connection step of detaching the mooring line and the cable from the floating-body structure and connecting the mooring line and the cable to the second floating-body type wind turbine power generating apparatus, after the second transfer step.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: August 7, 2018
    Assignee: MHI VESTAS OFFSHORE WIND A/S
    Inventor: Jun Hashimoto
  • Patent number: 10030631
    Abstract: The present invention relates to methods and apparatus for removing or substantially reducing negative damping effects on a floating wind turbine. An operating point signal is received and a gain scheduling parameter is determined based on the received operating point signal. An input signal is then gain scheduled by the gain scheduling parameter and based on at least the gain scheduled input signal the negative damping effects on a floating wind turbine can be removed or substantially reduced.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: July 24, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Ian Couchman, Robert Bowyer
  • Patent number: 10024303
    Abstract: A method of controlling a floating-body wind turbine power generating apparatus including a wind turbine generator disposed on a floating body includes a pitch-angle increasing step of increasing a pitch angle of a blade of the wind turbine generator when the wind turbine generator is stopped, so that an aerodynamic braking force is applied to a rotor of the wind turbine generator. In the pitch-angle increasing step, a first change rate of the pitch angle of the blade in a first period during which the wind turbine generator is in an inclining motion toward an upwind side from a vertical direction due to sway of the floating body, is smaller than a second change rate of the pitch angle of the blade in a second period during which the wind turbine generator is in an inclining motion toward a downwind side from the vertical direction due to the sway of the floating body.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: July 17, 2018
    Assignee: MHI VESTAS OFFSHORE WIND A/S
    Inventors: Tsuyoshi Wakasa, Satoshi Iwasaki, Yukio Yamashita, Yoshiyuki Hayashi
  • Patent number: 10024302
    Abstract: A vertical axis wind turbine formed from an arrangement of fixed stator blades to provide fluid flow acceleration into an arrangement of rotatable blades secured to a generator for invoking electrical power generation. The stator blades are maintained in position by use of a stator plate. Rotor blades are coupled to the generator. The amount of stator and rotor blades may be scaled in number and size depending upon the type of generator to be driven and associated mechanical energy to be obtained. The stator blades are designed for air deflection in a direction for optimal rotor blade rotation by accelerating air flow into a pre-swirl before the flow contacts the rotor blades. Each stator blade is oriented at a sufficient stagger angle so that an angle of the relative velocity does not exceed the stall angle of said rotor blade.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: July 17, 2018
    Assignee: Vortexis Energy Solutions, Inc.
    Inventors: Gecheng Zha, Bertrand Dano
  • Patent number: 10024305
    Abstract: The present disclosure is directed to a system and method for stabilizing disconnection of one or more wind turbines in a wind farm connected to a power grid during one or more grid contingency events. The method includes determining, via one or more processors, a phase-locked loop error signal for each of the wind turbines based on sensor signals from the plurality of wind turbines. The method also includes comparing the phase-locked loop error signal of each wind turbine to at least one predetermined threshold for a predetermined time period.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: July 17, 2018
    Assignee: General Electric Company
    Inventors: Alfredo Sebastian Achilles, Einar Vaughn Larsen
  • Patent number: 10027123
    Abstract: In order to control a plurality of inverters, which are connected on their input side to a current source each and on their output side to a common grid connection point, electrical variables are measured at the individual inverters and are used for controlling the individual inverters, currents being output by the individual inverters depending on the electrical variables measured at the location of the individual inverters Effects of the connection equipment between the individual inverters and the common grid connection point on currents are determined, electrical variables being measured at the grid connection point and are set in relation to the electrical variables measured at the same time at the individual inverters. The connection equipment between the individual inverters and the common grid connection point is taken into consideration in controlling the individual inverters.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: July 17, 2018
    Assignee: SMA Solar Technology AG
    Inventors: Yehia Tarek Fawzy, Daniel Premm, Vitali Sakschewski, Stijn Stevens, Christian Tschendel
  • Patent number: 10027239
    Abstract: A wind power converter device is provided. The wind power converter device includes grid side converters, generator side converters and a DC bus module. Each of the grid side converters includes grid side outputs electrically coupled to a grid and a first and a second DC inputs. Each two of the neighboring grid side converters are connected in series at the second and the first DC inputs. Each of the generator side converters includes generator side inputs electrically coupled to a generator device and a first and a second DC outputs. Each two of the neighboring generator side converters are coupled in series at the second and the first DC outputs. The DC bus module is electrically coupled between the grid side converters and the generator side converters.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: July 17, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chang-Yong Wang, Li Cai, Yan-Song Lu
  • Patent number: 10018185
    Abstract: A system for commissioning a wind turbine is provided. The system includes a test wind turbine, one or more additional wind turbines coupled to the test wind turbine, and a control system. The control system includes a first control module for controlling the one or more additional wind turbines to act as a power source and provide power to the test wind turbine. The control system also includes a second control module for controlling the one or more additional wind turbines to act as a load for dissipating test power generated by the test wind turbine.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: July 10, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Sumitha Mohan, Minesh Ashok Shah, Rajni Kant Burra, Govardhan Ganireddy, Akshay Krishnamurty Ambekar, Murali Mohan Baggu Data Venkata Satya, Allen Michael Ritter
  • Patent number: 10018177
    Abstract: A wind turbine includes a rotor comprising multiple blades mounted on a hub, MIMUs mounted on each blade for sensing parameter signals thereof, and a control system. The control system includes a wind speed calculation unit, a wind shear calculation unit, a pitch angle compensation command calculation unit, and a pitch control unit. The wind speed calculation unit is used for calculating wind speeds at the blades based at least on the sensed parameter signals. The wind shear calculation unit is used for calculating a characteristic shear exponent based at least on the calculated wind speeds. The pitch angle compensation command calculation unit is used for calculating pitch angle compensation commands of the blades based at least on the calculated characteristic shear exponent. The pitch control unit is used for adjusting the pitch angles of the blades based on the calculated pitch angle compensation commands.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: July 10, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Xu Fu, Lihan He, Hai Qiu, Gerald Addison Curtin, Jr., Myungkeun Yoon
  • Patent number: 10012701
    Abstract: Embodiments of the invention provide techniques and apparatus for accurately estimating an aged capacity (Eaged) of a battery in an energy storage system (ESS) used on a wind farm. Eaged throughout the life of the battery may be estimated by measuring the internal impedance of the battery and using a relationship between the age of the battery (e.g., a number of charging cycles) and a maximum capacity corresponding to the battery. The state of charge (SOC) may be calculated based on the electromotive force (EMF) of the battery. The actual available energy (Eavailable) of the battery may be calculated based on the Eaged of the battery and the calculated SOC. In this manner, embodiments of the present invention may allow a wind farm to function as a virtual power plant (VPP) and deliver peak load electricity, regardless of intermittent wind velocity.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: July 3, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventor: Jianhui Zhang
  • Patent number: 10006441
    Abstract: A management system for a wind energy plant including at least one control unit, and a method using the management system are disclosed. The management system is used to coordinate component modules of the wind energy plant with vibration damping modules and/or load reduction modules, wherein a sensor system supplies data of the operating states of the component modules for a system analysis. For this purpose, reactive vibrations and/or predictive forecasts of vibrations of the wind energy plant, and predictive disturbance variables are registered, and the vibration damping modules and/or load reduction modules in the control unit are activated, wherein an actuator carries out damping measures and/or load reduction measures on the component modules in accordance with the vibration damping modules and/or load reduction modules of the control unit.
    Type: Grant
    Filed: August 14, 2010
    Date of Patent: June 26, 2018
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Lothar Schindele, Boris Buchtala, Bernd Schnurr, Andreas Vath
  • Patent number: 10006437
    Abstract: A method for operating a wind power plant having at least one rotor blade, the blade angle of which can be adjusted. The wind power plant is operated with a predefinable reduced energy output set point. To determine the potential output, at least one predefinable operating parameter of the wind power plant is measured and is applied to at least one stored characteristic curve for the reduced energy output set point. The actual energy output is determined and the loss in the output is formed from the difference between the potential output and the actual energy output.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: June 26, 2018
    Assignee: Senvion SE
    Inventors: Sebastian Böhme, Bert Gollnick
  • Patent number: 10006438
    Abstract: The invention relates to a method for operating at least a first wind turbine including the steps of: recording a tower oscillation, initiating a measure to reduce oscillation if the tower oscillation is or contains a longitudinal oscillation, and if the amplitude of the longitudinal oscillation exceeds a predefined threshold value, and the measure for reducing the oscillation comprises freezing the current pitch angle at the current value for a predefined freezing period, switching the pitch control algorithm used, in particular in such a way that the control speed is reduced, adjusting the yaw position by a predefined yaw angle, switching the operation of the first wind turbine from a first operating mode based on a first power curve to a second operating mode based on a second power curve, and/or if, with regard to the current wind direction, the first wind turbine in a wind park is located behind a second wind turbine, adjusting the rotational speed of the first wind turbine to the rotational speed of the
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: June 26, 2018
    Assignee: Wobben Properties GmbH
    Inventor: Wolfgang de Boer
  • Patent number: 10001109
    Abstract: A multifunctional wind power green-energy apparatus generally includes a carrying base, a plurality of wind power generation devices mounted on the carrying base and includes a plurality of blade sections, and at least one electricity accumulation device, water pumping motor, and the air storage device arranged at one side of the carrying base and electrically connected with the wind power generation devices. With such a structural arrangement, through simple combination of the carrying base and the wind power generation devices, terrain limitation conditions for availability of wind power green energy can be reduced to the least for applications to diversified environments. Through operations in combination with the electricity accumulation device, the water pumping motor, and the air storage device, accumulation of electrical energy or direct use of the energy can be available. As such, the utilization of the wind power generation devices can be improved.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: June 19, 2018
    Assignee: TRUE TEN INDUSTRIAL CO., LTD.
    Inventor: Shun-Tsung Lu