Patents Assigned to SAFRAN ELECTRICAL & POWER
  • Patent number: 10913544
    Abstract: A method of electrically powering an electrical load in an aircraft, the method including electrically powering the electrical load with a main source that generates electricity; measuring an instantaneous parameter characterizing the main source; determining a level of use of the main source from the measured instantaneous parameter; adjusting the voltage of the main source as a function of the level of use; measuring an output voltage from the main source; comparing the measured voltage or the level of use with a predetermined threshold value; and whenever the measured voltage is less than the predetermined threshold value, electrically powering the electrical load from an auxiliary source that stores electricity so as to supply additional electric power to the electrical load.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: February 9, 2021
    Assignees: SAFRAN, SAFRAN ELECTRICAL & POWER
    Inventors: Jean-Philippe Salanne, Stephane Petibon, Florent Rougier, Antoine Duquerrois
  • Publication number: 20210033647
    Abstract: A sensor is configured to sense the rate of change of a current in order to protect the bridge arms in a power module with power layers and measurement layers. The sensor includes at least three conductors (C1, C2, Cp) and coils. One end of each conductor is connected to a common node, while the other end of each conductor is used respectively as an electrical terminal. The at least three conductors are contained in the same plane, referred to as the primary plane, while each conductor has a plane of symmetry perpendicular to the primary plane, each plane of symmetry passing through the common node and the corresponding terminal. A first conductor and a second conductor are identical and positioned symmetrically relative to a third conductor, and at least one pair of coils is positioned symmetrically relative to a plane of symmetry.
    Type: Application
    Filed: January 31, 2019
    Publication date: February 4, 2021
    Applicants: NL CONSEIL, SAFRAN ELECTRICAL & POWER
    Inventor: Norbert Lartigue
  • Publication number: 20210006191
    Abstract: The invention relates to a method for controlling a three-phase inverter (3) using a 120° control arrangement associated with a PWM-type control, the inverter (3) being driven by a controller and configured to power a permanent-magnet synchronous motor (5) of a device on board an aircraft. The motor (5) comprises a stator and a rotor that can be rotated relative to the stator when the motor (5) is powered. The inverter (3) comprises three branches (31, 32, 33), each branch comprising two switches (310, 311, 320, 321 and 330, 331) associated with a motor winding sing a 120° control arrangement of a three-phase inverter. The method is characterised in that when one switch on one branch is controlled such as to switch front the on-state to the off-state, the other switch on said branch is controlled such as to be in the on-state for a sufficient amount of time to allow the magnetic discharge of the motor winding associated with said branch.
    Type: Application
    Filed: March 15, 2019
    Publication date: January 7, 2021
    Applicant: Safran Electrical & Power
    Inventors: Wenceslas BOURSE, Pascal Jacques Frédéric Guy TOUTAIN, David BALTARO
  • Patent number: 10870934
    Abstract: Method for cleaning a braiding machine, particularly a machine for braiding electrical cables, said braiding machine comprising a plateau (12) for supporting an annular row of spindle drive members (14), characterized in that it comprises a step of equipping the machine with at least one cleaning tool (84), this cleaning tool comprising on the one hand means (90) configured to be driven by the members and, on the other hand, at least one guide element configured to be housed in slideways (32) for the movement of the tool, said guide element being configured to drive or to be equipped with a means (80) of cleaning said slideways, and a step of rotating said members so as to drive said cleaning means in said slideways.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: December 22, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventor: Anaêl Boff
  • Patent number: 10851274
    Abstract: A coolant mixture including water and at least one of the compounds chosen from 1-methoxy-2-propanol and 1-ethoxy-2-propanol in the proportions of the corresponding azeotrope or in near-azeotropic proportions. Such a mixture can be used as a heat-transfer fluid in a heat-exchange device, which can be incorporated into an aircraft or spacecraft. A method for obtaining a mixture by fractional distillation is also disclosed.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: December 1, 2020
    Assignees: Safran Electrical & Power, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE, ECOLE NATIONALE SUPERIEURE DE CHIMIE DE LILLE, UNIVERSITE DES SCIENCES ET TECHNOLOGIES DE LILLE
    Inventors: Nicolas Delalandre, Benjamin Roland Stanislas Joossen, Jean-Marie Aubry, Vincent Gerbaud, Ivonne Rodriguez-Donis
  • Patent number: 10852342
    Abstract: A method for detecting and locating a fault affecting an electrical cable includes the steps of (a) placing a first sensor and a second sensor along the cable, the second sensor being an acoustic sensor; (b) detecting the occurrence of the fault with the first sensor at a first time, and with the second sensor at a second time; (c) taking into account a propagation speed of an acoustic wave generated by the fault; (d) estimating a position of the fault depending on the first time and on the second time, on the basis of the propagation speed resulting from step (c); (e) determining a reference propagation speed depending on the position resulting from step (d) of the fault, and comparing said reference propagation speed with the propagation speed taken into account in step (c); and, (f) depending on the comparison, validating the position resulting from step (d) or reiterating steps (c) to (f) while adjusting, in step (c), the propagation speed taken into account.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: December 1, 2020
    Assignees: Commissariat a l'energie atomique et aux energies alternatives, Safran Electrical & Power
    Inventors: Diego Alberto, Vincent Heiries, Raphael Toufflet, Christophe Trebosc, Emmanuel Bussy
  • Patent number: 10836940
    Abstract: The present invention relates to a cooling mixture comprising a fluorinated compound and a non-fluorinated compound, wherein the fluorinated compound is a hydrofluoroether and the non-fluorinated compound includes a carbonyl function, which has a flash point no lower than 23° C. and which is characterised by having low relative volatility. The present invention likewise relates to the use of such a mixture as a coolant in a heat-exchange device.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: November 17, 2020
    Assignees: Safran Electrical & Power, Centre National de la Recherche Scientifique (CNRS), INSTITUT NATIONAL POLYTECHNIQUE de TOULOUSE, UNIVERSITE DES SCIENCES ET TECHNOLOGIES DE LILLE, ECOLE NATIONALE SUPERIEURE DE CHIMIE DE LILLE
    Inventors: Nicolas Delalandre, Benjamin Roland Stanislas Joossen, Jean-Marie Aubry, Vincent Gerbaud, Ivonne Rodriguez-Donis
  • Patent number: 10830210
    Abstract: An emergency wind turbine system for an aircraft including an outer structure in which an opening is made includes an emergency wind turbine including: a mast; a turbine including a body mounted on the mast that rotates about an axis of rotation, and a single blade or two blades extending radially from the body between a blade root and a blade head; a locking device to lock rotation of the turbine body about the axis of rotation, when the emergency wind turbine moves between retracted and deployed positions, such that the blade root axis forms an acute locking angle with an orthogonal projection of the longitudinal axis of the mast over a plane substantially perpendicular to the axis of rotation of the turbine and in which the blade root axis extends, to reduce the volume swept by the turbine when it moves between the retracted and deployed positions.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: November 10, 2020
    Assignee: Safran Electrical & Power
    Inventors: Eric Joseph Etienne Polin, Julien Guiraud
  • Patent number: 10825626
    Abstract: According to one or more aspects, a health sense system for a pulse width modulation (PWM) device associated with a magnetic coil is provided, and includes a health sense circuit, a health logic circuit, and a counter circuit. The health sense circuit measures one or more current measurements at a low voltage side of the pulse width modulation device. The health logic circuit determines a health bit indicative of a health score for the magnetic coil of the pulse width modulation device based on one or more of the current measurements. The counter circuit generates a feedback command for the pulse width modulation device based on the health bit.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: November 3, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventors: James Broadwell, Christopher Kenneth Wyatt, Dean Morgan
  • Patent number: 10823227
    Abstract: A rotating machine includes a housing and a first bearing received in the housing. The rotating machine also includes a shaft supported by the first bearing. The shaft defines a central axis that extends in a longitudinal direction. The rotating machine also includes at least one duct radially interior to the outer diameter of the shaft. The duct includes an inlet port and a radial outlet port that are in fluid communication with one another. The inlet port is configured to receive air and the radial outlet port is configured to discharge the air. The rotating machine also includes an air mover longitudinally disposed between the first bearing and the inlet port of the duct. The air mover creates an area of air pressure at the radial outlet port that is less than an air pressure at the inlet port.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: November 3, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventors: Thomas E. Katcher, William Gademer, John Gregory Snelick
  • Patent number: 10826366
    Abstract: A doubly fed brushless induction starter generator includes a stator and a rotor, which are separated by an air gap. The stator includes stator winding slots, each of which includes a first layer of power windings, a second layer of power windings, and a third layer of control windings, which include 2-pole single-phase windings. The control windings are arranged in the stator winding slots between the air gap and the first and second layers of power windings. Direct current is delivered to control windings in the generator as an excitation current to thereby produce a magnetic flux, through which the stator is moved to produce and alternating current in the power windings as an output current. The output current can be delivered to an electrical load, such as an electrical component on an aircraft.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: November 3, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventor: Mark Wesley Bailey
  • Patent number: 10808770
    Abstract: The invention relates to a system for the rotational decoupling of shafts, in particular drive shafts. The invention also relates to a generator protection system on a connection between a generator and a gas turbine engine. FIG. 1C illustrates the shaft-decoupling system in the decoupled position.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: October 20, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventors: Fernand Rodrigues, Yves Courtois De Lourmel
  • Patent number: 10782322
    Abstract: A busbar current sensor assembly includes a busbar member that includes a first cavity and a second cavity. The second cavity is disposed opposite the first cavity. The busbar current sensor assembly also includes a first current sensor disposed in the first cavity such that the first cavity at least partially surrounds the first current sensor and a second current sensor disposed in the second cavity such that the second cavity at least partially surrounds the second current sensor.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: September 22, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventors: Kevin Francis Hanley, Thomas Snyder
  • Patent number: 10784802
    Abstract: A generator starter of a turbomachine, including an asynchronous electric machine configured so as to operate in motor mode during a starting phase of the turbomachine while being supplied by an electrical source, and so as to operate in generator mode after the starting phase of the turbomachine in order to supply an electrical load. An inverter is arranged between the electrical source and the asynchronous machine with at least two alternating current terminals coupled to the asynchronous machine, and a control unit for the inverter configured to supply the asynchronous machine with a starting current in motor mode and a magnetisation current in generator mode. The asynchronous machine includes at least one first stator winding connected to the alternating current terminals to be supplied with the starting current in motor mode and with the magnetisation current in generator mode, and at least one second stator winding connected to the electrical load in generator mode.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: September 22, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventor: Eric De Wergifosse
  • Patent number: 10724545
    Abstract: The invention relates to an electric centrifugal compressor, in particular for a turbine engine or aircraft, including an electric motor, the stator of which is supported by a casing and the rotor of which includes a shaft mounted inside the casing, driving a centrifugal compressor impeller, the casing having a double skin and including two substantially cylindrical, coaxial skins extending around the engine and defining between them an annular section suitable for the circulation of a first cooling air flow, one inlet of which is located at a first longitudinal end of the shaft and an outlet of which is connected to a second longitudinal end of the shaft, which supports the centrifugal compressor impeller, wherein it includes means (J) for collecting a second air flow at the outlet of the centrifugal compressor impeller, means for channelling the second air flow along the shaft up to the first end, and means for discharging the second air flow out of the casing in order to prevent same from mixing with the f
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: July 28, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventors: Nicolas Stefanovic, Eric Wissemer, Jacques Deleris, Thierry Fontalbat
  • Publication number: 20200228030
    Abstract: A method for controlling an inverter configured to power electrically a motor including a stator and a rotor capable of being rotated relative to the stator when the motor is electrically powered, the inverter including a plurality of switches suitable for being controlled to open/close in order to regulate the power supply of the motor, each switch having a predetermined transition time from a closed state to an open state, and a predetermined transition time from the open state to the closed state, wherein the method includes the step of not generating the command to open and close the switches when this violates the predetermined transition times from a closed state to an open state, and the predetermined transition times from the open state to the closed state.
    Type: Application
    Filed: August 2, 2018
    Publication date: July 16, 2020
    Applicant: Safran Electrical & Power
    Inventors: Wenceslas BOURSE, Pascal Jacques Frederic Guy TOUTAIN
  • Patent number: 10710731
    Abstract: In an aeroengine comprising a gas turbine engine driving a propeller via a reduction gearbox, the propeller comprising a plurality of blades, each provided with one or more electrical deicer elements and being set into rotation by a propeller-carrying shaft passing through the gearbox, the propeller-carrying shaft having a fastener flange for fastening to the propeller, provision is made, in order to deliver the electrical power needed for powering said electrical deicer elements, for the aeroengine to include a rotary three-phase transformer set into rotation by the propeller-carrying shaft and comprising firstly a rotor mounted inside the propeller-carrying shaft and angularly secured thereto, and secondly a stator secured to a stationary portion of the aeroengine, the rotary three-phase transformer being arranged behind the propeller fastener flange.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: July 14, 2020
    Assignees: SAFRAN AIRCRAFT ENGINES, SAFRAN TRANSMISSION SYSTEMS, SAFRAN ELECTRICAL & POWER
    Inventors: Mathieu Jean Jacques Santin, Guillaume Julien Beck, Aldric Renaud Gabriel Marie Moreau De Lizoreux, Boris Pierre Marcel Morelli, Jean-Michel Bernard Paul Chastagnier, Thomas Turchi
  • Patent number: 10714285
    Abstract: An electrical switching device and related methods, for use in aerospace applications include a first static contact assembly, a second static contact assembly, a movable contact assembly for making an electrical connection between the first and second static contact assemblies. The first contact assembly, the second contact assembly and the movable contact assembly each include a silver contact that is percussion welded to the aluminum substrate. Before percussion welding, the silver contact includes a projection for focusing an arc during percussion welding.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: July 14, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventors: David Michael Geier, Olivier Maka
  • Patent number: 10690713
    Abstract: A method of detecting an electric arc in an electrical system from a signal originating from at least one sensor detecting acoustic waves in the system, including: a) calculating by means of a processing device, over a sliding window of signal samples, at least one statistical parameter selected from the skewness and the kurtosis of the signal; b) detecting a possible occurrence of an event by taking into account said at least one statistical parameter; and c) performing a frequency analysis of the signal enabling to identify an electric arc when an event is detected at step b).
    Type: Grant
    Filed: December 25, 2016
    Date of Patent: June 23, 2020
    Assignees: Commissariat à l'Energie Atomique et aux Energies Alternatives, Safran Electrical & Power
    Inventors: Diego Alberto, Vincent Heiries, Pierre Perichon, Jérôme Genoulaz
  • Patent number: 10685779
    Abstract: A wound element made up of a plurality of superposed layers of turns wound on a core, including a sheet of a material that is thermally conductive at least in its plane, which sheet is interposed between two of the superposed layers of turns and has an end projecting from these layers and including at least one temperature probe for delivering temperature information about the wound element.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: June 16, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventors: Nicolas Delalandre, Jacques Salat