Patents by Inventor Ludovic Darras

Ludovic Darras has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10523095
    Abstract: The invention essentially relates to a method for the production of a winding of a stator (15) comprising a body equipped with slots (28), comprising: a supply step consisting in supplying a winding unit with a bundle of conductors (37); and a pre-forming step consisting in moving the winding unit in relation to the bundle of conductors (37), such as to obtain a bundle of conductors (37) having, for each phase winding (E1-E6), at least two loop structures (39) and at least three segment structures (38), two of the segment structures (38) being positioned such that they can be disposed in the same slot (28) of the stator (15) and the two loop structures (39) connecting said two segment structures (38) stacked on the third segment structure (38).
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: December 31, 2019
    Assignee: Valeo Equipments Electriques Moteur
    Inventors: Ludovic Darras, Vincent Ramet, Jean Duquesne, Denis Even, Larry Sapotille
  • Patent number: 10505409
    Abstract: The invention relates mainly to an outer stator (15) for a rotary electric machine, comprising a body (16) provided with a yoke and teeth (25), with slots (28) being defined between pairs of teeth, as well as a winding comprising conductors having segment structures (38) inserted inside the slots (28). In the stator, the ratio between the width of a slot (L1) covered with a slot insulator (145) and the width of a segment structure (38) covered with enamel (L2) is between 0.9 and 2.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: December 10, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Ludovic Darras, Vincent Ramet, Mostafa Kadiri, Denis Even, Jean Duquesne, Larry Sapotille
  • 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
  • Patent number: 9742231
    Abstract: A rotary electrical machine comprising a rotor and a stator (1). The stator comprises a tooth (21) delimited by notches (22), and a winding composed of n×M wires (3), wherein n corresponds to a number of phases and is equal to at least 2, and M corresponds to a number of continuous electric wires for each phase (3) and is equal to at least one. The winding is composed of successive turns, each of the successive turns comprising n×M wires wound simultaneously in n of the notches (22) to be inserted in n series of notches. Each of the series of the notches is dedicated to a single phase, and for each of the successive turns, each of the assembly of the M wires (3) constitutes a phase and is inserted in the same series of the notches (22).
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: August 22, 2017
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Xavier Dunesme, Jérôme Fournier, Jean-Pierre Chochoy, Ludovic Darras, Alain Defebvin, Stéphane De Clercq, Olivier Luittre, David Desmet, Nicolas Langlard
  • Publication number: 20170047796
    Abstract: The invention relates mainly to an outer stator (15) for a rotary electric machine, comprising a body (16) provided with a yoke and teeth (25), with slots (28) being defined between pairs of teeth, as well as a winding comprising conductors having segment structures (38) inserted inside the slots (28). In the stator, the ratio between the width of a slot (L1) covered with a slot insulator (145) and the width of a segment structure (38) covered with enamel (L2) is between 0.9 and 2.
    Type: Application
    Filed: April 9, 2015
    Publication date: February 16, 2017
    Inventors: Ludovic Darras, Vincent Ramet, Mostafa Kadiri, Denis Even, Jean Duquesne, Larry Sapotille
  • Publication number: 20170047797
    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: Application
    Filed: April 9, 2015
    Publication date: February 16, 2017
    Inventors: Ludovic DARRAS, Vincent RAMET, Mostafa KADIRI, Denis EVEN, Jean DUQUESNE, Larry SAPOTILLE
  • Publication number: 20170047830
    Abstract: The invention essentially relates to a method for the production of a winding of a stator (15) comprising a body equipped with slots (28), comprising: a supply step consisting in supplying a winding unit with a bundle of conductors (37); and a pre-forming step consisting in moving the winding unit in relation to the bundle of conductors (37), such as to obtain a bundle of conductors (37) having, for each phase winding (E1-E6), at least two loop structures (39) and at least three segment structures (38), two of the segment structures (38) being positioned such that they can be disposed in the same slot (28) of the stator (15) and the two loop structures (39) connecting said two segment structures (38) stacked on the third segment structure (38).
    Type: Application
    Filed: April 9, 2015
    Publication date: February 16, 2017
    Applicant: VALEO EQUIPMENTS ELECTRIQUES MOTEUR
    Inventors: Ludovic DARRAS, Vincent RAMET, Jean DUQUESNE, Denis EVEN, Larry SAPOTILLE
  • Publication number: 20170040851
    Abstract: The invention primarily relates to a stator of a rotary electric machine, comprising a body (16) provided with a yoke (26) and teeth arranged along an inner periphery of the yoke (26), wherein the teeth, in pairs, define notches. The stator, which is free of tooth roots, further comprises outer indexing means (32) provided along an outer periphery of the yoke (26). The outer indexing means (32) comprise recesses (33) that can engage with rods (34) forming part of an external tool.
    Type: Application
    Filed: April 9, 2015
    Publication date: February 9, 2017
    Inventors: Jean DUQUESNE, Ludovic DARRAS, Vincent RAMET, Larry SAPOTILLE, Mostafa KADIRI, Denis EVEN
  • Publication number: 20170040858
    Abstract: The invention essentially relates to a method for the production of a winding of a rotary electric machine stator, comprising the following steps: forming a winding web (52) comprising a plurality of conductors (37); placing the winding web (52) in a comb (83); winding the winding web (52) around a spindle (105) such as to obtain a winding; and transferring the winding from the spindle (105) to the stator, wherein the winding web (52) is wound around the stator (105) over at least two turns.
    Type: Application
    Filed: April 9, 2015
    Publication date: February 9, 2017
    Applicant: VALEO EQUIPMENTS ELECTRIQUES MOTEUR
    Inventors: Ludovic DARRAS, Vincent RAMET, Jean DUQUESNE, Denis EVEN, Larry SAPOTILLE
  • Publication number: 20150194853
    Abstract: A rotary electrical machine comprising a rotor and a stator (1). The stator comprises a tooth (21) delimited by notches (22), and a winding composed of n×M wires (3), wherein n corresponds to a number of phases and is equal to at least 2, and M corresponds to a number of continuous electric wires for each phase (3) and is equal to at least one. The winding is composed of successive turns, each of the successive turns comprising n×M wires wound simultaneously in n of the notches (22) to be inserted in n series of notches. Each of the series of the notches is dedicated to a single phase, and for each of the successive turns, each of the assembly of the M wires (3) constitutes a phase and is inserted in the same series of the notches (22).
    Type: Application
    Filed: March 20, 2015
    Publication date: July 9, 2015
    Inventors: Xavier DUNESME, Jérôme FOURNIER, Jean-Pierre CHOCHOY, Ludovic DARRAS, Alain DEFEBVIN, Stéphane DE CLERCQ, Olivier LUITTRE, David DESMET, Nicolas LANGLARD
  • Patent number: 9016610
    Abstract: A method and device for winding a rotor or a stator (2), of a rotary electrical machine, having a series of teeth (21) which are delimited by notches (22). In each notch there are inserted M continuous electric wires (3) constituting a turn; M being equal to 1 or more, characterised in that n×M wires (3) are wound simultaneously in a number n of notches (22), n corresponding to the number of phases and being ?2. The assembly of the M wires (3) constituting a phase, being inserted in a single notch (22). The device for winding has at least two carriages (4, 5), with a series of teeth, delimited by n notches (40, 50). And, likewise corresponding to the winding, each set of M continuous electric wires (3) constituting a turn, is characterised in that M×n wires (3) are inserted simultaneously in the extension of the n notches (22) of the rotary electrical machine in the n notches (40, 50) in the respective carriages (4, 5).
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: April 28, 2015
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Xavier Dunesme, Jérôme Fournier, Jean-Pierre Chochoy, Ludovic Darras, Alain Defebvin, Stéphane DeClercq, Olivier Luittre, David Desmet, Nicolas Langlard
  • Publication number: 20120292423
    Abstract: A method and device for winding a rotor or a stator (2), of a rotary electrical machine, having a series of teeth (21) which are delimited by notches (22). In each notch there are inserted M continuous electric wires (3) constituting a turn; M being equal to 1 or more, characterised in that n×M wires (3) are wound simultaneously in a number n of notches (22), n corresponding to the number of phases and being ?2. The assembly of the M wires (3) constituting a phase, being inserted in a single notch (22). The device for winding has at least two carriages (4, 5), with a series of teeth, delimited by n notches (40, 50). And, likewise corresponding to the winding, each set of M continuous electric wires (3) constituting a turn, is characterised in that M×n wires (3) are inserted simultaneously in the extension of the n notches (22) of the rotary electrical machine in the n notches (40, 50) in the respective carriages (4, 5).
    Type: Application
    Filed: June 28, 2010
    Publication date: November 22, 2012
    Inventors: Xavier Dunesme, Jérôme Fournier, Jean-Pierre Chochoy, Ludovic Darras, Alain Defebvin, Stéphane De Clercq, Olivier Luittre, David Desmet, Nicolas Langlard