Patents Examined by Sean Gugger
  • Patent number: 11168659
    Abstract: A subsea energy storage installation comprises a pumped-storage system having pumping and hydropower generation components for, selectively, converting electricity into potential energy by expelling water from within a tank into the surrounding sea and for generating electricity from an incoming flow of water re-entering the tank under hydrostatic pressure. The tank comprises at least one elongate rigid pipeline that may be lowered to the seabed as part of a towable unit or laid on the seabed as a pipe string launched from a surface vessel.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: November 9, 2021
    Assignee: Subsea 7 Norway AS
    Inventors: Ernst Kristen Helgoy Kloster, Stale Moen Tonnessen, Argyrios Akritidis
  • Patent number: 11171590
    Abstract: An electronic device, in particular an alternator regulator, comprising a power stage to be connected to an inductive load, in particular to an alternator inductor, comprising at least one first pair of power transistors connected to a terminal of a DC bus, and a control circuit for said transistors, the transistors being disposed in parallel between said terminal of the DC bus and a first output to be connected to the load, at least one flyback diode connecting the opposite terminal of the DC bus to the first output, the control circuit being designed to generate a pulsed control signal for regulating the current in the load and for detecting a failure of one of the transistors, the control circuit being designed, during normal operation, to send the control signal to one of the transistors of the first pair, while maintaining the other transistor of said pair in an off-state.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: November 9, 2021
    Assignee: MOTEURS LEROY-SOMER
    Inventors: Samuel Moser, Jeremy Fratani, Vincent Morisseau, Jean-Francois Paillou
  • Patent number: 11165379
    Abstract: A method of monitoring a first winding set and at least one second winding set of a stator of a generator during operation is provided. The method includes: obtaining a first strength of a second harmonic of a first power produced from the first winding set; obtaining a second strength of a second harmonic of a second power produced from the second winding set; diagnosing the first winding set and/or the second winding set based on a second harmonic power difference between the first strength and the second strength.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: November 2, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Nuno Miguel Amaral Freire
  • Patent number: 11162379
    Abstract: A gas turbine engine including: a tail cone; a low pressure compressor; a low pressure turbine; a low speed spool interconnecting the low pressure compressor and the low pressure turbine; and an electric generator located within the tail cone, the electric generator being operably connected to the low speed spool; a structural support housing at least partially enclosing the electric generator, the structural support housing being located within the tail cone; and a temperature control device located within the tail cone between the structural support housing and the tail cone, wherein the temperature control device is in thermal communication with at least one of the structural support housing and the tail cone.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: November 2, 2021
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Todd A. Spierling
  • Patent number: 11149714
    Abstract: A method for optimizing auxiliary loads of a wind farm having a plurality of wind turbines includes tracking, via a farm-level controller of the wind farm, operational usage for one or more auxiliary components of at least one of the wind turbines in the wind farm as the operational usage for the one or more auxiliary components induces a load on the auxiliary component(s). The method also includes determining, via the farm-level controller, a power consumption of the load induced on the one or more auxiliary components based on the operational usage. Further, the method includes receiving, via the farm-level controller, at least one additional parameter of the wind farm. Moreover, the method includes implementing, via the farm-level controller, a control command for one or more of the one or more auxiliary components based on the power consumption and the at least one additional parameter.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: October 19, 2021
    Assignee: General Electric Company
    Inventors: Anthony Perez-Santiago, Hammad Ahmad, Devendra Shashikant Dange
  • Patent number: 11146193
    Abstract: A device to control a genset engine may use multiple feedback loops to provide a fast stable response to load changes. An outer feedback loop may receive frequency measurements and power measurements of a genset engine and determine a dispatch adjustment comprising a frequency setpoint based on the frequency measurements and power measurements. A middle feedback loop may comprise a double deadband droop filter that periodically generates a pulse based on the frequency setpoint and the power measurements. The middle feedback loop may update an inner loop setpoint based on the pulse. An inner feedback loop may alter a target fuel valve reference of the genset engine based on the inner loop setpoint generated by the second controller and a fuel valve droop.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: October 12, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Scott M. Manson, Ellery A. Blood, Gregary C. Zweigle
  • Patent number: 11131288
    Abstract: Substantially horizontal axis water turbine assemblies for generating electrical power in areas having poor sources of water flow including rotors mounted within housings in such a manner so as to minimize water resistance to the rotor blades with rotor blades passing through upper rotor return air spaces created within the housings and wherein the turbine assemblies may be mounted within support structures that both channel water flow to the turbine assemblies and facilitate access to the components thereof.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: September 28, 2021
    Inventor: Bruce Weddendorf
  • Patent number: 11118570
    Abstract: The present invention relates to a support structure for wind-driven power generators comprising a tubular tower (1) with multiple superposed, post-tensioned annular sections (20) from the crown to the foundation, each being formed by at least two pieces of prefabricated concrete wall (10) defining between them vertical joints (12), each wall piece (10) having two transverse joint faces (13) and two vertical joint faces (14); wherein in the vertical joints (12), the vertical joint faces are arranged facing one another and lack structural connectors between them for the transmission of structural stresses, allowing for an independent structural behavior of the mentioned wall pieces (10), the height of the wall pieces (10) being less than twice their width.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: September 14, 2021
    Inventors: Juan Carlos Lancha Fernandez, Manuel Cidoncha Escobar, Eduardo Salete Casino, Francisco Javier Martinez De Castaneda
  • Patent number: 11118558
    Abstract: A hydraulic power generation system is provided with a control unit which controls the power supply circuit to perform a normal operation of supplying power from the power system to a predetermined electric device provided at the water channel and an autonomous operation of supplying the power generated by the electric generator to the electric device. The control unit executes the autonomous operation when the power system fails.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: September 14, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Takahiro Abe, Atsushi Suhara, Tomomi Sakamoto
  • Patent number: 11121639
    Abstract: Disclosed herein is a converter for converting an AC voltage to a DC voltage, the converter comprising: a first H-bridge circuit comprising a first AC terminal for receiving an AC voltage, a second AC terminal, a first DC terminal and a second DC terminal; a second H-bridge circuit comprising a first AC terminal for receiving an AC voltage, a second AC terminal, a first DC terminal and a second DC terminal; an isolation block arranged between the second AC terminal of the first H-bridge circuit and the second AC terminal of the second H-bridge circuit; and a DC voltage output of the converter with a first terminal and a second terminal; wherein: the first terminal of the DC voltage output is connected to the first DC terminal of the first H-bridge circuit and the first DC terminal of the second H-bridge circuit; and the second terminal of the DC voltage output is connected to the second DC terminal of the first H-bridge circuit and the second DC terminal of the second H-bridge circuit.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: September 14, 2021
    Assignee: ROLLS-ROYCE plc
    Inventors: David R Trainer, Zhigang Sun, Ellis F H Chong
  • Patent number: 11111903
    Abstract: A yaw auto-calibration method configured to calibrate an anemometer of a yaw control system to correct for yaw misalignment, includes collecting wind speed and wind direction data from the anemometer over a plurality of time periods. The method includes determining from the collected data a wind direction compensation signal associated with a plurality of wind speed ranges. The step of determining a wind direction compensation signal includes determining from a plotted performance value, a maximum performance value for each wind speed range and the step of determining further includes correlating the maximum performance value for each wind speed range with the associated average generator speed and plotting the maximum performance wind direction against average generator speed for each wind speed range. The maximum performance wind direction associated with the average generator speed for each wind speed range constitutes the wind direction compensation signal for the wind speed range.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: September 7, 2021
    Assignee: American Superconductor Corporation
    Inventors: Martin Göldner, Markus Weiss, Gottfried Slanitsch, Robert Tratnig
  • Patent number: 11114863
    Abstract: The invention concerns a method for coupling to the grid a hydraulic unit having a synchronous generator, a runner, and wicket gates, the method comprises: a) a step of increasing the flow of water into the runner from a time t0 to a time t1 so that the rotation frequency of the rotor of the synchronous generator is, at time t1 equal to the frequency of the grid; b) a step of closing the circuit breaker at time t1, step a) further comprises a sub-step a1) executed from a time t2 to time t1, wherein the flow of water is adjusted so that, at time t1, the phase of the synchronous generator is aligned with the grid phase.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: September 7, 2021
    Assignee: GE Renewable Technologies
    Inventors: Renaud Guillaume, Quentin Alloin, Olivier Teller
  • Patent number: 11092080
    Abstract: Systems and methods for starting a gas turbine engine can comprise a generator to be driven by the gas turbine engine to supply power to a grid system, a first switch to electrically couple and decouple the generator from the grid system, a first static frequency converter having a first capacity, a second static frequency converter having a second capacity, control means for electrically coupling and decoupling the first and second static frequency converters from the grid system, a synchronizer and a controller configured to operate the generator as a starter-motor with power from: the first static frequency converter to turn the gas turbine engine at a first rate sufficient to start the gas turbine engine within a first time period or the first static frequency converter and the second static frequency converter in synchronization to turn the gas turbine engine at a second rate greater than the first rate.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: August 17, 2021
    Assignee: Mitsubishi Power Americas, Inc.
    Inventor: David McDeed
  • Patent number: 11088546
    Abstract: A method for feeding electrical power into an electrical supply grid by means of at least one wind power installation or of a wind farm having a plurality of wind power installations at a grid connection point, wherein a plurality of energy generators feed power into the electrical supply grid and a plurality of consumers draw power from the electrical supply grid so that a power balance between the infed power and the drawn power results in the electrical supply grid, which power balance is positive when more power is fed in than drawn, and the method comprises the following steps: monitoring of a power indicator that is representative of the power balance in the electrical supply grid, determination of an amount of balancing energy depending on the power indicator, infeed of a basic electrical power depending on the available wind power, and changing of the infeed of the basic electrical power by the determined amount of balancing energy.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: August 10, 2021
    Assignee: Wobben Properties GmbH
    Inventor: Johannes Brombach
  • Patent number: 11085422
    Abstract: Yarn energy harvesters containing conducing nanomaterials (such as carbon nanotube (CNT) yarn harvesters) that electrochemically convert tensile or torsional mechanical energy into electrical energy. Stretched coiled yarns can generate 250 W/kg of peak electrical power when cycled up to 24 Hz, and can generate up to 41.2 J/kg of electrical energy per mechanical cycle. Unlike for other harvesters, torsional rotation produces both tensile and torsional energy harvesting and no bias voltage is required, even when electrochemically operating in salt water. Since homochiral and heterochiral coiled harvester yarns provide oppositely directed potential changes when stretched, both contribute to output power in a dual-electrode yarn.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: August 10, 2021
    Assignees: Board of Regents, The University of Texas System, Industry-University Cooperation Foundation Hanyang University
    Inventors: Ray H. Baughman, Shaoli Fang, Carter S. Haines, Na Li, Jiangtao Di, Seon Jeong Kim, Shi Hyeong Kim, Keon Jung Kim, Tae Jin Mun, Changsoon Choi
  • Patent number: 11073151
    Abstract: This invention relates to an energy generating system and method, particularly to a fluid actuated energy generating system and method employing multifarious mechanisms to produce energy. The system comprises first and second tower structures; means operable to displace fluid in the first tower structure, and means operable in response to fluid displaced from the first tower structure for displacing fluid in the second tower structure. The system also comprises means operable in response to fluid displaced from the second tower structure for generating energy; means for collecting fluid displaced from the second tower structure for return to the second tower structure; and means for receiving, in the first and second tower structures, fluid for maintaining a fluid level for operation of the system.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: July 27, 2021
    Inventor: William Dennis Gillespie
  • Patent number: 11043817
    Abstract: A method for feeding electrical power into a three phase electrical power supply network at a network connection point, in particular by means of a wind power installation, using an inverter, comprising the following steps: detecting an electrical network voltage, in particular at the network connection point, determining a virtual generator voltage using a machine model that emulates a behavior of a synchronous machine, preparing the detected network voltage for comparison with the virtual genera-tor voltage, predefining a setpoint current as predefinition for an infeed current as a function of the virtual generator voltage and as a function of the network voltage prepared for comparison, and generating the infeed current depending on the setpoint current and feeding the generated infeed current at the network connection point into the electrical power supply network, wherein preparing the detected network voltage for comparison with the virtual generator voltage comprises transforming the detected network v
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: June 22, 2021
    Assignee: Wobben Properties GmbH
    Inventors: Jair Cassoli, Truong Duc Trung, Roberto Rosso, Sönke Engelken
  • Patent number: 11038400
    Abstract: A method of controlling a wind turbine is provided. The method comprises providing a primary power reference signal and a secondary power reference signal. The primary power reference signal is limited according to a primary signal limit. The secondary power reference signal is limited according to a secondary signal limit. The primary power reference signal and the secondary power reference signal are combined to provide a combined power reference signal, which is provided to a power or torque control system of the wind turbine.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: June 15, 2021
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Poul Brandt Christensen, Jesper Sandberg Thomsen, Gert Karmisholt Andersen
  • Patent number: 11038449
    Abstract: A control device for a vehicle generator includes a shared terminal to be connected to a communication IF or a lamp IF via a switch; and a nonvolatile PROM which controls the switch based on shared terminal setting data and carries out switching between the IFs to be connected to the shared terminal. The PROM stores therein shared terminal setting data “communication IF effective” as its initial setting. The shared terminal setting data stored in the PROM can, when necessary, be rewritten into “lamp IF effective” via the shared terminal, the communication IF, and a memory controller.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: June 15, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masahiro Nakajima, Kensuke Kitamura, Katsuyuki Sumimoto
  • Patent number: 11038450
    Abstract: A method of predicting a health status of an integrated drive generator (IDG) includes determining an effective deviation across a plurality of IDG output frequencies for a given IDG operation period. The method includes correlating the effective deviation to an IDG capability to determine a health of the IDG. A system for predicting a health status of an integrated drive generator (IDG) includes an IDG and a generator control unit (GCU) operatively connected to the IDG to determine a plurality of IDG output frequencies for a given IDG operation period. The system includes a central processing unit (CPU) operatively connected to the GCU to receive the IDG output frequencies therefrom. The CPU is configured and adapted to determine an effective deviation across at least some of the plurality of IDG output frequencies for the given IDG operation period, and correlate the effective deviation to an IDG capability to determine a health of the IDG.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: June 15, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Angela Higgins, Mykola Kravchenko, Shashvat Prakash