Patents Assigned to Valeo Equipements Electriques Moteur
  • Publication number: 20190363665
    Abstract: A system for control of a polyphase rotary electrical machine includes a stator provided with a plurality of phases, a synchronous rectifier bridge with a plurality of branches, each associated with a phase, each branch comprising a high transistor and a low transistor, a circuit for control of the high transistor, which can control a state of the said high transistor according to a difference between the positive potential and a reference voltage relative to the phase, a circuit for control of the low transistor, which can control a state of the said low transistor according to a difference between the phase voltage and a reference voltage relative to the negative potential, and, for each phase, a first protection device which is configured to permit a command for the low transistor to go to the switched-on state only if the phase voltage is lower than a threshold voltage.
    Type: Application
    Filed: May 22, 2019
    Publication date: November 28, 2019
    Applicant: Valeo Equipements Electriques Moteur
    Inventors: Pierre Chassard, Laurent De Lamarre, Pierre-François Ragaine, Farouk Boudjemai, Mohamed Gaci
  • Publication number: 20190363656
    Abstract: The invention relates to a regulation system for a control circuit of a rotary electrical machine with a rotor provided with a winding (208), the control circuit being provided with a transistor (205). The regulation system (1) is designed to comprise a signal converter (201) in order to convert an amplitude width modulation signal (PWM) into a reference signal (SREF) with cosinusoidal form parts, and a comparator (202) in order to establish the difference between the reference signal (SREF) and a transistor current (IT), in order to deduce an error signal (ERR) from which a control signal (COM) applied to a gate of the transistor is determined.
    Type: Application
    Filed: January 12, 2018
    Publication date: November 28, 2019
    Applicant: Valeo Equipements Electriques Moteur
    Inventors: Pierre Tisserand, Pierre Chassard, Thibault Girard
  • Patent number: 10491079
    Abstract: The invention relates mainly to a rotary electrical machine for a motor vehicle, comprising: a heat dissipater (65); two power modules (50) integrated in the heat dissipater (65), each comprising rectifier elements (53) which form three rectifier bridge arms (52), connection terminals (58) associated with the rectifier bridge arms (52), and a control unit which can control the rectifier bridge arms; and a connector (61) which establishes electrical connections, in particular between the terminals (58) for connection of the power modules (50) and the phase outputs of the rotary electrical machine.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: November 26, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Svetislav Jugovic, Fabrice Tauvron, Farouk Boudjemai, Pierre-François Ragaine, Laurent De Lamarre, Hugues Tempez
  • Publication number: 20190341823
    Abstract: The invention proposes a stator for a rotating electric machine, in particular for a motor vehicle, the stator (15) including: —a body (27) including notches (37) that are opened radially into an internal wall (40) of said body, —at least one winding (43) forming a phase of the stator, the winding formed from turns (54) includes a first half-phase (49) and a second half-phase (50) that are superposed radially in the notch (37), each turn including a series of axial strands (44) that are received in a series of associated notches and connecting strands (45, 46) that connect the successive axial strands (44) by extending alternatively to protrude with respect to the body (27). A length of wire of each turn of one of the half-phases is larger than the length of wire of each turn of the other half-phase. Furthermore, one of the half-phases has a number of turns higher than that of the other half-phase.
    Type: Application
    Filed: January 17, 2018
    Publication date: November 7, 2019
    Applicant: Valeo Equipements Electriques Moteur
    Inventors: Vincent Ramet, Eric Delcroix, Sébastien Leclercq, Alain Defebvin
  • Patent number: 10447122
    Abstract: Rotating electric machine provided with an axis X. The machine comprises a front part and a rear part. The machine comprises a rotor of axis X comprising two axial end surfaces, each provided with fan blades. The axial surfaces located on the side of the front part and on the side of the rear part. A stator comprises a stator body having slots. The stator comprises a winding installed in the slots and forming a front winding head and a rear winding head. The rotor and the stator are placed in a casing. The front winding head completely masks the blades of the axial surface located on the front side of the machine, along a direction perpendicular to axis X.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: October 15, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Stéphane Desenclos, Eric Delcroix, Mostafa Kadiri, Ludovic Doffe, Benjamin Pouchelle, Patrice Azoulay
  • Publication number: 20190296604
    Abstract: Starter (1), in particular for a motor vehicle, comprising:—a casing (3);—a rear bearing (5) secured to a rear end of the N casing (3);—a seal between the rear bearing (5) and the casing (3); the starter (1) further comprising:—a lateral opening along the outer periphery (32) of the casing (3);—a grommet (37), mounted in the lateral opening, for leading electric wires, which supply power to the starter (1), through the casing (3).
    Type: Application
    Filed: May 11, 2017
    Publication date: September 26, 2019
    Applicant: Valeo Equipements Electriques Moteur
    Inventors: Fabrice Marsac, Thierry Paltrie
  • Publication number: 20190267851
    Abstract: The invention mainly relates to a claw-pole rotor (2) for a rotating electric machine, characterized in that said rotor comprises a plurality of magnets (20) that are located between the poles and are made of neodymium-iron-boron having a dysprosium content of less than 2% by weight. By keeping the dysprosium content in the magnets of the rotating electric machine to a minimum, the invention thus does away with the problems associated with the limited dysprosium supplies and its cost.
    Type: Application
    Filed: May 19, 2017
    Publication date: August 29, 2019
    Applicant: Valeo Equipements Electriques Moteur
    Inventors: Jean-Marc Dubus, Benoit Walme, Johnny Duarte, Mamy Rakotovao
  • Patent number: 10389188
    Abstract: The invention essentially relates to an outer stator (15) for a rotary electric machine, comprising a body (16) equipped with a yoke and teeth (25) arranged on the internal periphery of the yoke (26), with slots (28) being defined between pairs of teeth (25), in which the teeth do not have roots and the stator also comprises corners (31) at the free ends of the teeth (25) that are curved according to a radius (R), known as the radius of entry (R).
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: August 20, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Ludovic Darras, Vincent Ramet, Mostafa Kadiri, Denis Even, Jean Duquesne, Larry Sapotille
  • Publication number: 20190238031
    Abstract: The invention mainly relates to a rotating electrical machine (10), in particular for a motor vehicle, comprising: —a heat sink (58) having at least one receptacle, —an electric module positioned in the receptacle and comprising at least one connection terminal, —a connector (55) comprising at least one track (54) electrically connected to the connection terminal and a receptacle (84) for receiving a connecting means, in particular a head (83) of a screw (74), ensuring the mechanical and electrical connection between the track (54) of the connector (55) and the heat sink (58), and —an anti-loopback air flow element (93) inserted between a bearing (18) of the rotating electrical machine (10) and the connector (55), characterised in that the anti-loopback air flow element (93) comprises at least one sealing plug (101) for the receptacle (84) for the connecting means.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 1, 2019
    Applicant: Valeo Equipements Electriques Moteur
    Inventors: Fabrice Tauvron, Svetislav Jugovic, Farouk Boudjemai
  • Patent number: 10355597
    Abstract: A power supply having a transformer, a magnetizing current regulation circuit, and a device for controlling the regulation circuit intended to switch the regulation circuit alternately from the magnetizing state to the demagnetizing state is disclosed. The control device is intended to prolong the magnetization phase for a magnetization time (TF). The power supply also includes an output capacitor connected to a secondary of the transformer so as to form a resonant circuit with the leakage inductor, the voltage between the terminals of the output capacitor corresponding to the output voltage (VS) of the power supply. The magnetization time (TF) and the value of the output capacitor are such that, on the resonance portion of the magnetization phase, the output voltage (VS) describes a sine wave portion and, starting from an initial value (VS0) below the median value of the sine wave, passes through said median value.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: July 16, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Dominique Oswald, Boris Bouchez
  • Patent number: 10355633
    Abstract: The inventive method is of the type of those comprising a control stage for driving mode operation of the machine (12) in which currents of the phases in phase windings (u, v, w) of a stator (10) of the machine, which is connected to an on-board power system (2, 15) supplied by a battery (2) providing a predetermined nominal voltage (Ubat), is “full wave” controlled. In accordance with the invention, the control stage is preceded by a pre-magnetizing stage of the stator in open circuit, in which an electromotive peak force between phases substantially equal to the nominal voltage is created by a rotor excitation current (Ir) of a rotor (8) of the machine.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: July 16, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventor: Luc Kobylanski
  • Patent number: 10326327
    Abstract: A claw pole rotor comprises a shaft, first and second polar wheels fastened to the shaft, a winding provided with a winding insulator and surrounded by the first and second polar wheels, a commutator provided with at least one commutator ring, a fan fastened to the first polar wheel and disposed between the winding and the at least one commutator ring, at least one end-of-winding wire being linked to one of the at least one commutator rings, passing through a radial cavity provided between the fan and the first polar wheel. The winding insulator comprises a clip retaining the one end-of-winding wire. The retaining clip is fastened to the winding insulator and comprising crimping means intended to be disposed in the radial cavity to crimp the part of the end-of-winding wire extending into the radial cavity.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: June 18, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Herve Ribot, Daniel Hirsou, Pascal Leborgne
  • Patent number: 10320248
    Abstract: A rotor with permanent magnets for a rotary electric machine including a plurality of alternating north poles and south poles and made up of a plurality of permanent magnets arranged in first recesses extending axially and distributed regularly between a circumferential portion and a central portion of the magnetic mass of the rotor such as to define a plurality of circumferential polar sections, the first recesses being separated by central tabs with a thickness E, the permanent magnets having a polygonal radial section that comprises a substantially rectangular portion next to the circumferential portion adjacent to a substantially trapezoidal portion next to the central portion. The rotor having a ratio R0 (h/E) of a first height h of the trapezoidal portion to the thickness E of a central tab is predetermined such as to maximize the efficiency of the electric machine.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: June 11, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Lilya Bouarroudj, Virginie Leroy, Nam-Gook Kim
  • Publication number: 20190149017
    Abstract: The invention relates mainly to a rotary electrical machine including: a bearing (12); a stator (11) including a stator body (13); and a tubular ring (27), said stator body (13) being mounted braced in the ring (27); a cooling chamber (28) for circulating coolant liquid defined by an outer periphery of said tubular ring (27) and an inner periphery of said bearing (12); said bearing (12) including an intake and an outlet of coolant liquid, said machine including a separating wall (42) for separating said cooling chamber (28) extending between said intake and said outlet of coolant liquid, said separating wall (42) being added relative to said tubular ring (27) and including at the ends thereof attachment members for holding said wall (42) on said tubular ring (27).
    Type: Application
    Filed: May 12, 2017
    Publication date: May 16, 2019
    Applicant: Valeo Equipements Electriques Moteur
    Inventors: Virginie Leroy, Michaël Hanquez, Hugues Gervais
  • Patent number: 10284035
    Abstract: A rotary electrical machine comprising a front magnet wheel, a rear magnet wheel, and a shaft comprising four sections with respective diameters (D1, D2, D3, D4), distributed axially, wherein: the first section comprises knurling which is configured such as to ensure radial retention between the shaft and the front magnet wheel; the second section is configured to permit the indexing and centring of the front and rear magnet wheels; the third section comprises knurling which is configured to ensure radial retention between the shaft and the rear magnet wheel; and the fourth section comprises a collar which is configured to ensure the axial retention between the shaft and at least one magnet wheel, and in that the diameters (D1, D2, D3, D4) of the shaft comply with the following equation: D1<D2<D3<D4.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: May 7, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Pierre-Yves Bilteryst, Henri Delianne, David Margueritte, Patrice Balthaze, Eric Jozefowiez, Franck Mouret, Sylvain Perreaut, Hubert Debruyne
  • Patent number: 10277156
    Abstract: The invention relates to an architecture which is applied to a six-phase rotary electric machine of the type comprising first and second three-phase systems offset angularly at a predetermined offset angle. First and second phase windings of the three-phase systems respectively carry first (U1, V1, W1) and second (U2, V2, W2) phase currents controlled by electronic power modules (15, 16, 17). The electronic modules comprise first and second power terminals (12, 13) each capable of being electrically connected to first and second instances of the first and second phase windings. According to the invention, the electronic power modules are interconnected such as to balance the losses.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: April 30, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventor: Luc Kobylanski
  • Patent number: 10270308
    Abstract: Brush holder support plate (1) for an electric engine comprises a central through-hole (2) for the engine manifold and guide elements (10) for receiving brush holders (20) in sliding connection on the plate. The plate allows the brush holder to be mounted on the plate, engaging same in the direction running from the edge (1e) of the plate towards the central through-hole (2). The plate comprises a non-return stop (11) for each brush holder (20) after the latter has been mounted in sliding connection on the plate, the stop being elastically retractable. The brush holders (20) have a base shaped so as to be received in sliding connection in the guide elements (10) of the plate (1). They have a recess in the base of same suitable for being engaged by the corresponding non-return stop (11) of the plate (1).
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: April 23, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Jacques Verot, Maximilien Gentil, Jun-Sh Liu
  • Patent number: 10263551
    Abstract: The method of control according to the invention slaves a DC voltage generated by the alternator to a predetermined setpoint value by controlling an excitation current flowing in an excitation circuit comprising an excitation winding of a rotor of the alternator. The excitation current is controlled by means of a semiconductor switch, in turn controlled by a control signal having a predetermined period. The method comprises a detection of a failure of the excitation circuit. At least one short-circuit of the excitation winding is detected. According to another characteristic of the method, the control signal is generated on the basis of a combination of a setpoint signal formed by pulses of the predetermined period exhibiting a duty ratio representative of the setpoint value and of a detection signal indicative of the short-circuit.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: April 16, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Pierre Tisserand, Pierre Chassard, Thibault Arrou, Giuseppe Pasetti, Francesco Tinfena, Alexandre Schmitt
  • Patent number: 10256692
    Abstract: An interconnection element (24) for connecting the stator coils of a polyphase rotary electric machine (2), including a plurality of conductive layers stacked axially, including the same number of solid base layers (26, 28, 30), and additional layers (32, 34, 36), each formed by a plurality of ring portions, each one of the ring portions not covering the entire perimeter of the stator, each one of the conductive layers having internal connection tabs (40) for connecting the coils and external connection tabs (48, 50) for connecting to connected electrical devices (4, 20), the number of base layers and additional layers being equal to the number of phases of the machine to which the interconnection element is added.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: April 9, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Khadija El Baraka, Svetislav Jugovic, Paul Armiroli
  • Publication number: 20190101090
    Abstract: The invention relates mainly to a motor vehicle combustion engine starter motor comprising:—a pinion body comprising splines on its external periphery,—a pinion (31) having an axis (Y), the said pinion (31) being mounted with the ability to move on the pinion body comprising an internal periphery comprising splines (44) engaged with the splines of the said pinion body, the said pinion (31) comprising, on its external periphery,—teeth (42) each having two tooth flanks (47) each comprising:—a working flank (48), and—a tooth root (49) extending from the said working flank (48) of the corresponding tooth (42), characterized in that the said tooth flank (47) comprises at least one tooth root (49) delimited by a curved portion (PC) having a variable radius of curvature.
    Type: Application
    Filed: March 7, 2017
    Publication date: April 4, 2019
    Applicant: Valeo Equipements Electriques Moteur
    Inventors: José Mateus, Guy Faucon