Patents Examined by Julio C. Gonzalez
  • Patent number: 10683839
    Abstract: An air-driven generator for generating electric power from movement of a working fluid. Upper ends of buoyancy conduits are in fluidic communication with an upper end of a gravitational distribution conduit, and a lower end of the gravitational distribution conduit is in fluidic communication with lower ends of the buoyancy conduits. An air injection system injects air into the buoyancy conduits. A closed fluid loop is formed with working fluid flowing from the gravitational distribution conduit driving a fluid turbine system that is interposed between the lower ends of the gravitational distribution conduit and the buoyancy conduits. Flow of working fluid can be induced by an injection of air into working fluid disposed in the buoyancy conduits to achieve a generation of power by actuation of the fluid turbine system. An upper chamber can remove entrained air. A Rankin Cycle Generator can receive and be actuated by exhausted air.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: June 16, 2020
    Inventor: Mark J. Maynard
  • Patent number: 10680543
    Abstract: A system may include a prime mover configured to provide mechanical energy to the system by spinning a shaft. The system further includes a synchronous AC generator mechanically coupled to the shaft, and an exciter mechanically coupled to the shaft and configured to output a field current for exciting the synchronous AC generator. The system also includes a number of synchronous electric motors electrically coupled to the AC generator and configured to drive one or more mechanical loads. A controller of the system is configured to establish and maintain a magnetic coupling between the synchronous AC generator and the synchronous electric motors by controlling a level of the field current during a ramped increase in rotation of the synchronous AC generator from zero rotational speed. The motors accelerate synchronously with the generator due to the magnetic coupling as the rotational speed of the generator increases.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: June 9, 2020
    Assignee: Rolls-Royce North American Technologies Inc.
    Inventors: Mark Jon Blackwelder, Paul M. Rancuret
  • Patent number: 10630145
    Abstract: A converting device arranged to transfer thermodynamic energy of a compressed working fluid into electrical energy. The converting unit is comprised of at least one cylinder which encloses a piston. In an embodiment, said at least one piston is provided with a magnetic portion. A ferromagnetic coil surrounds the piston and is integrated with the cylinder. As the piston moves through the coil, electrical energy is generated.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: April 21, 2020
    Assignee: NODITECH AB
    Inventor: Hardy Hollingworth
  • Patent number: 10618410
    Abstract: A motor vehicle comprises a motor configured to input and output power for driving; an inverter configured to drive the motor; a power storage device configured to transmit electric power to and from the motor; a system main relay configured to connect and disconnect the power storage device with and from a power line on an inverter-side; and a control device configured to enable the motor vehicle to be driven with turning on the system main relay according to a predetermined procedure in response to a system on-operation. The motor vehicle does not perform failure diagnosis of the inverter when an abnormality signal of the inverter is generated before a predetermined time after the system main relay is turned on in response to the system on-operation, while performing the failure diagnosis when the abnormality signal of the inverter is generated after the predetermined time.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 14, 2020
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Takahiko Hirasawa, Junmin Cao
  • Patent number: 10622923
    Abstract: A method is provided of controlling a doubly fed induction generator—(DFIG) wind turbine converter system if a sub-synchronous resonance event acts on the wind turbine. According to the method a sub-synchronous resonance event is detected. Thereupon, a switch from a non-SSR-control mode to a SSR-control mode is performed. At least one of the following activities is performed in the SSR-control mode, namely: (i) freezing rotor AC voltages in magnitude and phase, (ii) altering at least one rotor-current-controller gain (iii) altering at least one rotor-current-controller time constant, to dampen the effect of the SSR-event on the wind turbine.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: April 14, 2020
    Inventors: Gert Karmisholt Andersen, Ciprian Biris, Yi Zhou, Manoj Gupta, Vajira Suminda Ganepola, Uffe C. Merrild
  • Patent number: 10608514
    Abstract: A type of electricity and air supplying equipment, which includes: a clutch mechanism, a belt assembly, a motor having a transmission shaft, a generator unit having a generating wheel, and an air compressor having an air compressing wheel. The clutch mechanism has first and second clutch shafts that can be engaged or disengaged. The belt assembly includes a first belt connected between the transmission shaft and the generating wheel, a second belt connected between the generating wheel and the first clutch shaft, and a third belt connected between the second clutch shaft and the air compressing wheel. The motor drives the generator unit to run and generate electricity, and meanwhile, the generator unit drives the air compressor through the clutch mechanism. Thus, the equipment can use single power for electricity generation and high-pressure air production, while providing heat insulation and easy assembly.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: March 31, 2020
    Inventors: Yao-Lin Wang, Chong-Ying Wang
  • Patent number: 10598153
    Abstract: Architecture that harnesses energy from natural atmospheric wind and water currents and self-generated wind and water currents from moving vehicles and natural fluid flow found in nature for moving or stationary applications. The power generation system harnesses energy from natural atmospheric sources utilizing pneumatic and/or hydraulic turbines with compound nozzles, meteorological sensors, computer controlled harmonic resonance valves, a control system, and other components.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: March 24, 2020
    Inventor: Paul C. Dietzel
  • Patent number: 10581355
    Abstract: A double-fed oscillating linear alternator is provided that includes two concentric Halbach type arrays, one stationary and one movable, that do not require magnets or iron laminations to create a strong magnetic field between the two arrays where the movable array oscillates in a linear motion with respect to the stationary array. The two arrays are manufactured from magnet-less and iron-less conductive material using additive manufacturing techniques.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: March 3, 2020
    Assignee: United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventor: Rodger W. Dyson
  • Patent number: 10578653
    Abstract: Disclosed are systems and methods to determine an overexcitation condition on electric power delivery system equipment that includes a magnetizing core. Overexcitation conditions are determined even during sub-synchronous resonance, ferro-resonance, and other complex events. Power system voltage is integrated and normalized to determine a flux on the magnetizing core. The flux is compared with a protection model to determine the overexcitation condition on the magnetizing core. Once an overexcitation condition is detected, a protective action may be taken to remove power from the effected power delivery system equipment.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: March 3, 2020
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Ritwik Chowdhury, Dale S. Finney
  • Patent number: 10554098
    Abstract: A reciprocating piston engine is disclosed having a first inner magnetic field unit, arranged on a first crank web of a crankshaft, and a stationary first outer magnetic field unit, wherein the first inner magnetic field unit and the first outer magnetic field unit together form a first electromagnetic converter, in particular an electric motor or an electric generator. The first crank web has a first compensating weight on a side that is opposite a first connecting rod bearing and that faces radially outwards in relation to a crankshaft axis, wherein the first compensating weight is made of a non-magnetizable material. The first inner magnetic field unit is arranged on a side of the first compensating weight that faces outwards in relation to the crankshaft axis. The invention also relates to a system comprising the reciprocating piston engine, an energy store, an electric control unit and a crankshaft sensor.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: February 4, 2020
    Assignee: HVD AG
    Inventors: Andreas Von Schuttenbach, Karl-Heinz Grabher
  • Patent number: 10516357
    Abstract: A switched reluctance generator and devices and methods for its control are concerned with generators and controls which can operate in an aerospace environment. The generator may have: a rotor having rotor poles; a stator having stator poles; and a controller. Either the rotor or stator poles each have windings to which current can be supplied to energise the poles and from which current can be drawn to a load; and the controller is arranged to: periodically excite each of the windings in turn to a pre-determined level of current; measure the current generated in each winding; cease the excitation when the current generated in each winding exceeds the excitation current; and direct the generated current in each winding to the load. The generator may thereby avoid the need to determine the position of the rotor poles relative to the stator poles to provide the commutation of the generator.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: December 24, 2019
    Assignee: ROLLS-ROYCE PLC
    Inventor: Simon Turvey
  • Patent number: 10508641
    Abstract: Disclosed is a wave energy power generation apparatus, comprising a plurality of wave energy collecting units. Each of the wave collecting units comprises: a potential energy collecting assembly used for collecting wave potential energy, a kinetic energy collecting assembly used for collecting wave kinetic energy and a positioning assembly used for vertically limiting and horizontally positioning buoyancy compartments. The apparatus is beneficial for improving the collection efficiency of wave energy, and simultaneously can satisfy the purposes of long-term safe and stable operation, of being adapted for scaled construction.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: December 17, 2019
    Inventor: Xianle Gao
  • Patent number: 10511209
    Abstract: An engine generator, including a general-purpose engine, a generator unit driven by the engine to generate electric power and capable of operating as an engine starter motor during engine starting, a case housing the engine and the generator unit, a battery detachably attached to the case, an inverter unit connected to the generator unit, and a power supply circuit interconnecting the battery attached to the case and the inverter unit and supplying power of the battery through the inverter unit to the generator unit.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: December 17, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tetsuya Matsuhisa, Kenji Shibata, Wataru Matsuyama, Minoru Maedako
  • Patent number: 10505479
    Abstract: An arrangement for controlling a synchronous generator having a stator comprising at least one stator winding and having a rotor with an electromagnet driven by a field current is provided. The rotor is rotatable relative to the stator. The electromagnet is inductively coupled to the at least one stator winding. The arrangement includes a measurement system configured to measure at least one quantity and a controller configured to cause shutting down the field current when the at least one quantity satisfies at least one criterion associated with at least one malfunction.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: December 10, 2019
    Inventor: Espen Haugan
  • Patent number: 10505419
    Abstract: A wind power generator has a nacelle; a hub rotatable about an axis of rotation with respect to the nacelle; at least two blades fitted to the hub; an electric machine which is fitted to the nacelle, is bounded by an inner surface extending about the axis of rotation, and has a rotor and a stator; and a cooling system for airflow cooling the electric machine, and which has a deflector body for defining a gap between the deflector body and the electric machine and guiding the airflow into the gap.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: December 10, 2019
    Assignee: WINDFIN B.V.
    Inventors: Otto Pabst, Georg Folie, Matteo Casazza, Paolo Bustreo, Peter Gebhard
  • Patent number: 10495068
    Abstract: A nacelle for a wind turbine includes an electrical generator having a stator and a rotor with an air gap between the stator and the rotor. The stator includes an annular support plate. A cooling circuit in the nacelle includes at least a first inlet portion for channeling a fluid cooling medium to the gap between the stator and the rotor. The first inlet portion of the cooling circuit includes at least an inlet hole on the annular support plate for letting at least a portion of the cooling medium flow towards the air gap and an inlet fan for making the fluid cooling medium flow in the inlet portion. The stator includes a circumferentially outer structure attached to the annular support plate and the cooling circuit includes at least a second outlet portion for channeling a heated fluid medium from the air gap between the stator and the rotor.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: December 3, 2019
    Inventor: Giovanni Airoldi
  • Patent number: 10498273
    Abstract: Described is an independent speed variable frequency generator system that may include a rotor and a stator. The system may further include a pilot generator stage including a magnetic field source positioned on the rotor and a set of pilot multiphase windings positioned on the stator. The system may also include a high frequency transformer stage including a first set of high frequency transformer multiphase windings positioned on the stator and a second set of high frequency transformer multiphase windings positioned on the rotor. The system may also include a main machine stage including a set of main field multiphase windings positioned on the rotor and a set of main armature multiphase windings positioned on the stator, where the second set of high frequency transformer multiphase windings are coupled directly to the set of main field multiphase windings. The system may include a generator control unit.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: December 3, 2019
    Inventors: Lijun Gao, Eugene Solodovnik, Shengyi Liu
  • Patent number: 10498275
    Abstract: A system includes an exciter configured to operate with a synchronous generator. The exciter may be mechanically coupled and rotatable with the synchronous generator, or the exciter may be independently rotatable. The exciter is configured to output a field current for exciting the synchronous generator to produce a voltage and a current at an output of the synchronous generator. The synchronous generator may be synchronized with loads during a time when the synchronous generator is at substantially zero speed and the loads, such as motors, are at zero speed. A controller included in the system is configured to control output of the field current by the exciter with an exciter voltage. The controller may control the exciter voltage to selective include an AC component and DC component in accordance with a rotational speed of the exciter.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: December 3, 2019
    Assignee: Rolls-Royce North American Technologies Inc.
    Inventors: Mark Jon Blackwelder, Paul M. Rancuret
  • Patent number: 10491038
    Abstract: A method for controlling an electrical power subsystem includes determining an auxiliary voltage error value based on a measured voltage of the low voltage distribution panel. The method further includes receiving an active current command. The method further includes calculating a switching pattern for a line-side converter of the power converter based on the auxiliary voltage error value and the active current command. A current level produced by the line-side converter controls a voltage to the low voltage distribution panel.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: November 26, 2019
    Inventors: Govardhan Ganireddy, Saurabh Shukla, Anthony Michael Klodowski
  • Patent number: 10476363
    Abstract: A hybrid induction motor includes a fixed stator, an independently rotating outer rotor, and an inner rotor fixed to a motor shaft. The outer rotor is designed to have a low moment of inertia and includes angularly spaced apart first bars and permanent magnets on an inner surface of the outer rotor. The inner rotor includes angularly spaced apart second bars and interior flux barriers aligned with the second bars. The outer rotor is initially accelerated by cooperation of a rotating stator magnetic field with the first bars. As the outer rotor accelerates towards synchronous RPM, a rotating magnetic field of the permanent magnets cooperate with the second bars of the inner rotor to accelerate the inner rotor. At near synchronous speed the rotating stator magnetic field reaches through the outer rotor and into the inner rotor coupling the two rotors for efficient permanent magnet operation.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: November 12, 2019
    Inventor: Louis J. Finkle