Patents Examined by Nicholas Ponomarenko
  • Patent number: 8624414
    Abstract: A method for controlling a steam power plant is provided. The method includes the steps of providing a first signal showing a reduction of the current power level of the generator, generating a second signal showing a short circuit interruption as a function of the first signal, resetting the second signal after a predetermined time period and blocking the second signal for a predetermined period of time, stopping and subsequently starting the turbine as a function of the second signal, generating a third signal showing a load rejection as a function of the first signal, and permanently stopping the turbine as a function of the third signal. A device for controlling a steam power plant is also provided.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: January 7, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Martin Bennauer, Heribert Werthes
  • Patent number: 8618776
    Abstract: In a power generator, three-phase armature windings and a switching unit are provided for each phase armature winding. The switching unit includes a pair of a high-side switching element with a first diode and a second low-side switching element with a second diode. The switching unit rectifies, through at least one of the high-side switching element, the first diode, the second low-side switching element, and the second diode, a voltage induced in each phase armature winding. A zero-cross detector detects a point of time when a phase current based on the voltage induced in each phase armature winding is reversed in direction as a zero-cross point of the phase current. A determiner determines an off timing of the high-side switching element or the low-side switching element for each phase armature winding relative to the zero-cross point detected by the zero-cross detector.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: December 31, 2013
    Assignee: Denso Corporation
    Inventor: Harumi Horihata
  • Patent number: 8618777
    Abstract: A rotary electrical machine regulation device of the type which can control the electrical machine using a predetermined set value of a direct voltage (B+) of the on-board electrical network of the vehicle in which the machine is installed. An excitation current (EXC) is supplied to the alternator (machine), and has a duty cycle (RC) which is determined by a digital processing block (9), on the basis of an error voltage between the predetermined set value and the direct voltage of the electrical network. Accordingly, a system (11) is provided herein for making the digital block electrically self-sufficient. The system includes a voltage maintenance device with a self-sufficient capacitor (110), and a self-sufficient control element (111).
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: December 31, 2013
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Stéphane Fourmy, Raymond Rechdan
  • Patent number: 8614521
    Abstract: The invention relates to a device (1) for converting the energy of the swell and of waves into useable energy, particularly electrical energy, comprising a float element (2), an oscillating element (3) mounted such that it can move with respect to the float element, the oscillating element (3) being able to be set in relative motion with respect to the float element (2) under the action of the waves on the float element and means (4) for converting the movement of the oscillating element (3) into useable energy, particularly electrical energy, the device (1) also comprising braking means (5) capable selectively of immobilizing or releasing the oscillating element (3) with respect to the float element, clutch means (7) able selectively to couple or to uncouple the conversion means (4) and the oscillating element (3), and control means (8) for controlling the braking means (5) and the clutch means (7) as the swell evolves.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: December 24, 2013
    Assignees: Ecole Centrale de Nantes, Centre National de la Recherche Scientifique (CNRS)
    Inventors: Arélien Babarit, Michel Guglielmi, Alain Clement
  • Patent number: 8614522
    Abstract: An energy converting device, particularly for converting mechanical energy to hydraulic energy and from it into electrical energy, uses as an energy transport medium, a control fluid guided in two different control circuits. The control circuits have an operative connection to each other by a coupling device (32). One control circuit (28) serves for feeding in energy, particularly in the form of mechanical energy. The other control circuit serves for discharging energy in the form of converted energy, particularly electrical energy.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: December 24, 2013
    Assignee: Hydac System GmbH
    Inventors: Wolfgang Hahmann, Norbert Böhmer, Daniel Thull, Frank Herold
  • Patent number: 8614519
    Abstract: An electric power storage power plant that utilizes an existing electric power source to capture and store electricity, and then instantly retransmit it on demand, is disclosed. An electric motor transfers rotational energy to at least one energy storage spring that rotationally connects to an electric generator via a variety of rotational energy connecting elements. Utilizing energy storage springs in this manner enables intermittent generation from renewable energy sources, such as wind and solar power, to provide base load electric power, as well as providing frequency regulation, by providing storage to the national electric power grids. Electric grid power may be utilized when the price is low, and then released and transferred to an electric generator when the price of electricity is higher. Rotational energy storage may be utilized to provide backup power for applications of all sizes. It is efficient, scalable, and deployable almost anywhere.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: December 24, 2013
    Inventor: William Sheridan Fielder
  • Patent number: 8610297
    Abstract: The invention relates to a starter (10) for an internal combustion engine, comprising a starter motor (12) which can be coupled to the internal combustion engine by means of a pinion (22), and a device for engaging the pinion (22) in a gear rim (26) of the internal combustion engine and connecting the starter motor (12) to a DC voltage supply system (30, 31). In order to disconnect the sequence of operations, the device has separate means, in particular separate relays (57, 64; 60), for engaging the pinion (22) on one hand and turning on the starter motor on the other when the internal combustion engine is started, thus preventing reactions of the engagement dynamics on the contact system when the motor current is switched.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: December 17, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Biessenberger, Hartmut Wanner, Uwe Daurer, Oliver Neumann
  • Patent number: 8610298
    Abstract: The invention controls the network frequency via an active power reserve obtained by interacting in a coordinated manner with the speed regulation that acts on the power generated or on the pitch angle, to guarantee primary or secondary regulation across the whole range of wind speed.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: December 17, 2013
    Assignee: Ingeteam Power Technology, S.A.
    Inventors: Jorge Acedo Sánchez, Ainhoa Cárcar Mayor, Jesús Mayor Lusarreta, Javier Pérez Barbachano, Susana Simón Segura, David Solé López, Mikel Zabaleta Maeztu, Luis Marroyo Palomo, Jesús López Taberna
  • Patent number: 8604633
    Abstract: The invention relates to a system for evaluating the efficiency of a wind turbine (3), with a control system comprising means (11, 15) which are used to measure meteorological parameters M1, M2 and are respectively arranged in the wind turbine (3) and in a meteorological tower (5), and means (13) for measuring the orientation ? of the wind turbine and the power Pr generated by same. The system according to the invention comprises a computerised unit (21) which is connected to said measuring means (11, 13, 15) and provided with a first calculating module (23) designed to obtain a characteristic power Pc as a function of said parameters from the data obtained during a first operating step, and a second calculating module (25) designed to obtain the mean deviation Dm between the power Pr actually generated and the characteristic power Pc according to the function obtained by the first calculating means (23) in the set of at least one series of data.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: December 10, 2013
    Assignee: Gamesa Innovation & Technology, S.L.
    Inventors: Andrés Llombart Estopiñan, Roberto Gutierrez Ardanaz, Jose Jesus Guerrero Campo, Francisco Javier Beltran Martinez, Jesús Sallan Arasanz, Carlos Pueyo Rufas, Ana Patricia Talayero Navales, Julio Javier Melero Estela, Miguel Garcia Gracia
  • Patent number: 8604630
    Abstract: A power distribution system is disclosed. The power distribution system may have a generator, a first load interruption device associated with the generator, and a load powered by the generator. The power distribution system may also have a second load interruption device associated with the load, and a generator controller. The generator controller may be configured to control the generator, determine existence of a fault condition associated with electric service between the generator and the load, and selectively activate the second load interruption device based on the determination. The generator controller may be further configured to determine if activation of the second load interruption device isolated the fault condition, and selectively activate the first load interruption device when activation of the second load interruption device fails to isolate the fault condition.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: December 10, 2013
    Assignee: Caterpillar Inc.
    Inventor: Keith Ronald Folken
  • Patent number: 8598730
    Abstract: In embodiments of the present invention improved capabilities are described for a wind energy conversion system including a plurality of wind energy conversion modules integrated into a superstructure for the conversion of wind energy to electrical energy, each one of the plurality of wind energy conversion modules including a nozzle comprising: an intake having an intake length; a throat coupled in fluid communication with a wind power generating turbine, wherein the throat is downstream of the intake; a diffuser comprising a housing and having a length, the diffuser downstream from the throat, wherein a diameter of the diffuser is greater than a diameter of the throat; and a vortex-forming aerodynamic feature on at least one of the intake, the throat, the turbine, and the diffuser, wherein the aerodynamic feature acts to increase throughput through the nozzle.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: December 3, 2013
    Assignee: V Squared Wind, Inc.
    Inventor: Robert M. Freda
  • Patent number: 8598732
    Abstract: A wind turbine is disclosed. The wind turbine includes a direct drive generator, which includes an inner stator arrangement and an outer rotor arrangement, a stationary outer shaft and a rotatable inner shaft having a center axis. At least two main bearings support the rotatable inner shaft inside the stationary outer shaft. The stator arrangement is arranged on the outside of the stationary outer shaft. The rotor arrangement is substantially arranged around the stator arrangement on the front side at least indirectly attached to the rotatable inner shaft and/or to the hub of the wind turbine.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: December 3, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventor: Henrik Stiesdal
  • Patent number: 8598728
    Abstract: The present disclosure relates to an engine-generator having an engine, an electrical generator and a control panel configured to control the engine-generator. The engine-generator includes a first electrical starter having a first battery, a first solenoid configured to receive a starting signal from the control panel and a first starter motor configured to crank the engine when the first solenoid receives the starting signal from the control panel. The engine generator also includes a second electrical starter including a second battery, a second solenoid configured to receive a starting signal from the control panel and a second starter motor configured to crank the engine when the second solenoid receives the starting signal from the control panel.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: December 3, 2013
    Inventor: Frank Navetta
  • Patent number: 8593114
    Abstract: The present invention relates to a control device for a doubly-fed induction generator in which a feedback linearization method is enabled and further provides a control device for a doubly-fed induction generator in which a feedback linearization method is embedded, characterized in that the control device divides and measures positive sequency components and negative sequency components from stator voltage and current, rotor voltage and current, and signals of stator magnetic flux and rotor magnetic flux of the doubly-fed induction generator.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: November 26, 2013
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Jung Woo Park, Dae Wook Kang, Ji Woo Moon, Jin Soo Kwon, Deuk Woo Pae, Chang Hun Oh
  • Patent number: 8581429
    Abstract: A turbine-generator system includes a power source powered by renewable energy. The power source drives a compressor, which outputs compressed air to pressurized tanks. A turbine is connected to the tanks via one or more nozzles. The turbine includes turbine blade assemblies and a turbine flywheel, each rotatably mounted to a shaft. The nozzles deliver compressed air to the turbine blades. The turbine includes a magnet motor for selectably applying torque to the turbine flywheel. The turbine is coupled to a generator via a magnetic clutch. An external control computer controls the rotational speed of the magnet motor and the amount and timing of the compressed air injected onto the turbine blades. A load sensor is coupled to an output of the generator and is in communication with the external control computer.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: November 12, 2013
    Inventor: Joseph Sajan Jacob
  • Patent number: 8581432
    Abstract: An ocean wave energy device uses large gas filled and surface vented or partially evacuated flexible containers each having rigid movable ends and rigid fixed depth ends connected by flexible bellows, suitably reinforced against external hydrostatic pressure, submerged to a depth below anticipated wave troughs. One or more said containers compress and expand as waves and troughs, respectively, pass overhead driving hydraulic or pneumatic, pumping means producing pressurized fluid flow for a common sea bed motor-generator or for other uses or on-board direct drive generators. Mechanical, hydraulic or pneumatic means re-expand said containers when a wave trough is overhead. Power output is augmented by mechanically connecting said rigid moving surfaces to surface floats, which may also provide said submerged container venting such that as waves lift and troughs lower said floats, said containers are further compressed and re-expanded, respectively.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: November 12, 2013
    Assignee: Rohrer Technologies, Inc.
    Inventor: John W. Rohrer
  • Patent number: 8581425
    Abstract: A power generation system includes a prime mover, a generator mechanically connected to the prime mover, the generator including a field winding portion and an armature winding portion, a direct current bus node, a first variable frequency drive having an input electrically connected to the bus node and an output electrically connected to the armature winding portion, and an inverter having an input electrically connected to the bus node and an output electrically connected to the field winding portion.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: November 12, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Gregory I. Rozman, Steven J. Moss
  • Patent number: 8581434
    Abstract: According to one aspect of the invention, a device for converting kinetic energy of water waves to electrical power includes a turbine structure having multiple blades evenly attached to a first shaft, a first pulley wheel attached to the first shaft, a second pulley wheel attached to a second shaft disposed in parallel with the first shaft, an electricity generator is attached to the second shaft, and a platform is configured to support the turbine structure, the platform having an upper deck and a lower deck coupled to each other via a hinge. The upper deck is tilted from the lower deck via the hinge such that the first shaft is positioned with an inclining angle with respect to the water surface. The inclining angle is configured such that a distance and time for each fin to travel under the water surface between the entry point and exiting point are maximized while being near to the water surface.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: November 12, 2013
    Inventor: King Lung Chan
  • Patent number: 8575770
    Abstract: These inventions related to systems and methods for producing, shipping, distributing, and storing hydrogen. In one embodiment, a hydrogen production and storage system includes a plurality of wind turbines for generating electrical power; a power distribution control system for distributing, and converting the electrical power from the wind turbines, a water desalination and/or purification unit which receives and purifies seawater, and an electrolyzer unit that receive electrical power from the power distribution system and purified water from the desalination units and thereby converts the water into hydrogen and oxygen. After its production, hydrogen is stored, transported, and distributed in accordance with various embodiments.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: November 5, 2013
    Inventor: Timothy J. Devine
  • Patent number: 8570004
    Abstract: The vehicle generator includes a rotor wound with a field winding, a stator wound with a stator winding, rectifier modules respectively connected to corresponding output terminals of the stator winding, and a power generation control device to control a power generation voltage of the vehicle generator formed from outputs of the rectifier modules by controlling an excitation current flowing through the field winding. Each of the rectifier modules includes a pair of a first MOS transistor and a second MOS transistor series-connected between positive and negative terminals of a battery. The rectifier modules are connected with one another through a communication line. The rectifier modules exchange data regarding control of the first and second MOS transistors of the rectifier modules by a pulse train signal transmitted on the communication line.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: October 29, 2013
    Assignee: Denso Corporation
    Inventors: Tadatoshi Asada, Harumi Horihata