Patents Assigned to Alstom Technology Ltd.
  • Patent number: 10288279
    Abstract: A power plant with a fossil fuel fired boiler, an air feed system, flue gas system and condensate system. A unitary flue gas heat exchanger spans a bypass line in the flue gas system and the condensate system so as to improve the thermal efficiency of the power plant while minimising complexity.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: May 14, 2019
    Assignee: Alstom Technology Ltd
    Inventors: Frederic Geiger, Haider Mirza, Damien Baumann
  • Patent number: 10236785
    Abstract: This application relates to methods and apparatus for control apparatus of a voltage source converter for direct current transmission of electrical power over a transmission line. The control apparatus comprises regulation control for generating a regulation signal for the converter to regulate an electrical parameter of the voltage source converter, such as voltage or power, so as to regulate power transmission over the transmission line. The regulation signal is based on the difference between a measured value of said parameter and a reference value of said parameter, as may be supplied from a reference control block and may be derived from a demand signal indicating the voltage or power demand. The apparatus also includes damping control configured to generate a damping signal for modulating said regulation signal to reduce the effect of resonance within the bandwidth of control of the converter.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: March 19, 2019
    Assignee: ALSTOM TECHNOLOGY LTD.
    Inventor: Colin Oates
  • Patent number: 10191090
    Abstract: Systems and methods according to these exemplary embodiments provide for methods and systems related to optical current sensors used to monitor standby power transformers, specifically fiber optical current and voltage sensors and, more particularly, to applications involving filters for use in such sensors, such as frequency tracking comb filters. According to one embodiment, a method for monitoring a connection condition of a stand by power transformer includes the steps of measuring a current flowing through a high voltage side of the standby power transformer using at least one optical current sensor disposed proximate to a current flow path of the high voltage side, using a comb filter to filter the measured current, determining whether the filtered, measured current is less than a predetermined threshold value; and generating an alarm indication that the high voltage side of the standby power transformer is unconnected.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: January 29, 2019
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: James Blake, Alan Baker, Joseph H. Schaeffer, Michael Putt
  • Patent number: 10186389
    Abstract: Device for making and/or breaking a current including a pair of permanent contacts (3, 4), at least one of the contacts (3, 4) being movable. At least one permanent contact (3, 4) including a main portion (3.1, 4.1) having a free end and an end protection portion (3.2, 4.2) secured to the free end of the main portion (3.1, 4.1), designed to be in mechanical and electrical contact with the other permanent contact (4, 3) only during an operation for opening or closing the pair. The end protection portion (3.2, 4.2) is made of a single transition metal having a melting temperature that is strictly higher than that of the main portion (3.1, 4.1) to which it is secured, or of an oxide or carbide of such a metal, or even of zinc oxide. For application in particular to high- or medium-voltage circuit breakers.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: January 22, 2019
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Oana Aitken, Chakib Fnineche
  • Patent number: 10177706
    Abstract: A device for regulating the supply to a photovoltaic converter, the device comprising: a laser source (2); a photovoltaic converter (6) that feeds a DC-DC converter (8); circuit (100) for regulating the input impedance of said DC-DC converter (8) as a function of the operating voltage (Us) of the photovoltaic converter (6) and of its no-load voltage (Us0); and circuit (42) for measuring an output voltage of the DC-DC converter (8) and for producing a regulation signal (SR) for regulating the laser source.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: January 8, 2019
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventor: Jean-Pierre Dupraz
  • Patent number: 10110142
    Abstract: Circuits comprising at least one energy storage device, a resistor and switch arranged in series with the resistor are described. The energy storage device is arranged in parallel with the series connection of the switch and the resistor, and the switch is arranged to selectively switch the resistor into a parallel connection to the energy storage device. In some examples, the switch comprises a series connection of semiconductor switching elements. In some examples, the circuit may comprise a sub-module for use in a multilevel modular converter.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: October 23, 2018
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventor: John Lewis Outram
  • Patent number: 10074988
    Abstract: This application relates to control methods and apparatus for a voltage source converter comprising a plurality of energy storage devices which can be selectively connected into an arm of the voltage source converter. The apparatus is configured to generate a modelled value of the voltage of an energy storage device of the voltage source converter based on one or more model parameters and the operation of the voltage source converter, receive the modelled value and also a measured value of the voltage of at least one energy storage device, determine an error between the modelled value and the measured value, and generate a model control signal for adapting the model based on said error so that the modelled value substantially corresponds to the measured value. Control circuitry is responsive to said model module and/or said model adaptation module to control operation of the voltage source converter.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: September 11, 2018
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventor: Colin Oates
  • Patent number: 10056209
    Abstract: A high- or medium-voltage circuit breaker, in which a movable contact (1) is moved in sliding in order to separate stationary contacts (11, 12) from its sliding surface (2). In accordance with the invention, the stationary contacts (11, 12) have switching portions (9) that separate from the movable contact more or less simultaneously as a result of a setback (19) in the movable contact (1), thereby causing two simultaneous switching arcs to appear (14, 15), which arcs are extinguished much more quickly than a single arc, before the current is transferred to the conventional arcing contacts (5). This disposition enables the stationary contacts (11, 12) and their environment to be less exposed to damage.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: August 21, 2018
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Didier Rodrigues, Denis Frigiere, Jean Marc Willieme, Frank Jacquier, Vincent Royot
  • Patent number: 10003257
    Abstract: A DC to DC converter for converting voltage between two voltage levels is described. The converter comprises a plurality of capacitors and switch units and is controllable between a first and second commutation state. In the first commutation state, the converter is configured for connection to higher voltage terminals and the capacitors are connected in series. In the second commutation state, the converter is configured for connection to lower voltage terminals, and the capacitors are connected to form at least two branches connected in parallel, the branches comprising a series connection of at least two capacitors. In some embodiments, one or more intermediate commutation states may also be provided.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: June 19, 2018
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Carl Barker, Jose Maneiro
  • Patent number: 9997312
    Abstract: The invention relates to a circuit breaker (10) for an electricity transport installation, the circuit breaker comprising a tank (12), a vacuum bottle (20) that has a stationary contact (24), a movable contact (26), and sealing means (40), a casing (30) that is arranged inside the tank (12), that electrically connects the movable contact (26) to an electrical conductor (18), and that co-operates with an outside wall of the vacuum bottle (20) to define a volume (42) that is taken to a pressure close to atmospheric pressure, and feeder means for feeding the inside volume (42) of the casing (30), which feeder means pass through the inside volume (14) of the tank (12), the circuit breaker being characterized in that the feeder means for feeding the inside volume (42) of the casing (30) consist in a tubular element (38, 54, 56) made of insulating material.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: June 12, 2018
    Assignee: ALSTOM TECHNOLOGY LTD.
    Inventors: Joël Ozil, René Rosset, Matthieu Barre, Victor Hermosillo
  • Patent number: 9995285
    Abstract: A solar thermal power system includes a solar receiver, and a thermal energy storage arrangement having thermal energy storage fluid to be circulated through the solar receiver to store thermal energy. The system includes a multistage steam turbine operable on variable pressure steam generated by a steam generator arrangement, by utilizing the thermal energy storage fluid. The arrangement includes an economizer section, an evaporator section, and a superheater section communicably configured to utilize the heat of the hot thermal energy storage fluid to generate and supply the variable pressure steam to the turbine. The system includes a recirculation line configured around the economizer section to recirculate the heated water to an inlet of the economizer section, increasing pressure range of the variable pressure steam in the arrangement.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: June 12, 2018
    Assignee: ALSTOM Technology Ltd.
    Inventors: Andreas Ehrsam, Enrico Conte
  • Patent number: 9941080
    Abstract: The invention relates to a conductor (2) for electrical equipment, the conductor comprising at least one hollow section member (2) of electrically conductive material that is elongate along a longitudinal axis (Y), the conductor having an outside surface in which at least a portion forms corrugations (23, 24) in a plane perpendicular to the longitudinal axis. The conductor may advantageously form a movable contact (blade) (2) of a high voltage disconnector.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: April 10, 2018
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Daniel Demissy, Pascal Babin, Martin Leger, Clément Rollier, Riyad Kechroud
  • Patent number: 9941690
    Abstract: A disconnector for high voltage, including columnar supporting elements which are electrically isolating and are adapted to support electromechanical elements of opening and closing a circuit or an electrical line. At least one columnar supporting element, which is tubular, supports an optical current transformer, the optical fiber of which, surrounded by protection elements, extends inside the tubular columnar supporting element.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: April 10, 2018
    Assignee: ALSTOM TECHNOLOGY LTD.
    Inventors: Francesco Rosin, Vincenzo Girlando
  • Patent number: 9906002
    Abstract: The invention provides a RC module (20) for a RC voltage divider for an electrical substation insulated by a dielectric fluid. The RC module (20) comprises first and second plane conductive supports (210a,b) separated from each other in order to co-operate with the dielectric fluid to form a capacitor, when the module equips an electrical substation. The module further comprises at least one resistive element (220a,b) electrically connecting together the first and the second conductive supports (210a,b), the resistive element comprising a printed circuit (222) defining a resistive electric circuit including a plurality of resistive 2-terminal components mounted in series. The invention also provides a resistive element and a voltage divider.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: February 27, 2018
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventor: Patrice Juge
  • Patent number: 9899125
    Abstract: The present invention relates to medium- or high-voltage equipment having low environmental impact, including a leaktight enclosure in which there are located electrical components covered with a solid dielectric layer of varying thickness and a gaseous medium for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in said enclosure, and that comprises heptafluoroisobutyronitrile in a mixture with a dilution gas.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: February 20, 2018
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Yannick Kieffel, Alain Girodet, Jacques Porte
  • Patent number: 9890897
    Abstract: The invention provides a support structure (10) comprising at least one cylindrical pillar (16) of vertical main axis, having a bottom end (16i) that is connected to the ground (14) and a top end (16s) connected to a component to be supported; the support structure being characterized in that the pillar (16) includes at least one helical slot (20) coaxial about the main axis of the pillar (16).
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: February 13, 2018
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventor: Daniel Demissy
  • Publication number: 20180020560
    Abstract: The invention relates to an assembly of modules for an electrical circuit comprising: a module support for at least two modules and at least two modules, each module comprising two complementary connectable sub-modules. The module support comprises for each sub-module at least an alignment member adapted to individually align the sub-module during its installation on the module support in such way to connect it to complementary sub-module already installed on the module support to form one of the modules. The invention also relates on a module support, a module and a Flexible Alternative Current Transmission Systems.
    Type: Application
    Filed: February 9, 2015
    Publication date: January 18, 2018
    Applicant: ALSTOM Technology Ltd
    Inventors: Roman RAUBO, Marek RAUBO
  • Patent number: 9837801
    Abstract: The present invention provides medium- or high-voltage equipment including a leaktight enclosure in which there are located electrical components and a gas mixture for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in said enclosure, the gas mixture comprising heptafluoroisobutyronitrile, carbon dioxide, and oxygen in small quantities. Electrical components covered in a solid dielectric layer of varying thickness are located inside said leaktight enclosure of the equipment of the invention.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: December 5, 2017
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Yannick Kieffel, Alain Girodet, Christophe Creusot, Jacques Porte
  • Publication number: 20170341339
    Abstract: A configuration for joining a ceramic layer has a thermal insulating material to a metallic layer. The configuration includes an interface layer made of metallic material located between the ceramic layer and the metallic layer, which includes a plurality of interlocking elements on one of its sides, facing the ceramic layer, the ceramic layer comprising a plurality of cavities aimed at connecting with the corresponding interlocking elements of the interface layer. The configuration also includes a brazing layer by means of which the interface layer is joint to the metallic layer. The invention also refers to a method for obtaining such a configuration.
    Type: Application
    Filed: August 21, 2017
    Publication date: November 30, 2017
    Applicant: ALSTOM TECHNOLOGY LTD.
    Inventors: Matthias HOEBEL, Hans-Peter BOSSMANN, Gregoire Etienne WITZ
  • Patent number: 9780539
    Abstract: The invention relates to a removable stabilizer for a spacer casing (24a-24f) of an electrical installation of the GIS type (20), the spacer casing (24a-24f) comprising a first opening (33) as well as a conductor (30b) provided with a bore (34), the removable stabilizer (29) comprising a plug (29a) configured to be introduced via the first opening (33) into the spacer casing (24a-24f), the plug being designed to penetrate into the bore (34) of the conductor (30b) so as to block said conductor (30b) against moving in translation after said spacer casing (24a-24f) has been put to atmospheric pressure.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: October 3, 2017
    Assignee: ALSTOM TECHNOLOGY LTD.
    Inventors: Heinz Gerber, Robert Lüscher