Patents by Inventor Ludovic DOFFE

Ludovic DOFFE 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).

  • Publication number: 20250385563
    Abstract: An end-shield for a rotating electric machine of a vehicle including a first end-shield half and a second end-shield half mechanically connected to each other by fixing means and defining an internal volume configured to house a rotor/stator assembly. The first end-shield half being intended to support at least one tensioner configured to tension a belt of the vehicle. The end-shield includes a load-spreading member extending between the first end-shield half and the second end-shield half. The load-spreading member is configured to partially transmit a force exerted by the tensioner on the first end-shield half to the second end-shield half. The load-spreading member is distinct from the fixing means.
    Type: Application
    Filed: June 17, 2025
    Publication date: December 18, 2025
    Applicant: Valeo eAutomotive Germany GmbH
    Inventors: Paul FROGER, Céline CUCHEVAL, Ludovic DOFFE, Mathilde POMMIER, Vincent MOURET, Ruthraapathi KRISHNARAJAN, Daniel BOUCLET
  • Publication number: 20250242681
    Abstract: A rotary electric machine for a vehicle includes a housing, a rotor/stator assembly housed in the housing and at least one fastening flange integrally formed with the housing and configured to mechanically connect the rotary electric machine to a combustion engine of the vehicle. A fastening flange includes a body provided with a receiving opening for a fastening mechanism centred about a fastening axis, and at least one tab connecting the body to the housing. The fastening flange includes at least one incipient break formed on the tab and configured so that the tab breaks in the event that the vehicle undergoes a violent impact.
    Type: Application
    Filed: January 29, 2025
    Publication date: July 31, 2025
    Applicant: Valeo eAutomotive Germany GmbH
    Inventors: Mathilde POMMIER, Ludovic DOFFE, Céline CUCHEVAL, Vincent MOURET, Paul FROGER, Ruthraapathi KRISHNARAJAN, Daniel BOUCLET
  • Patent number: 11394276
    Abstract: The invention mainly relates to a rotating electrical machine (10) comprising: a rotor (12) provided with a rotor winding (13); a stator (11) provided with a winding (14) having a plurality of phases; a converter (16) comprising rectifying components (17) to which the phases of the stator (11) are connected; a voltage regulator (24) for adapting an excitation current (lexc) applied to the rotor winding (13) according to a difference between an output voltage (Liait) and a reference voltage; at least one current sensor (27) arranged at the output of the rotating electrical machine (10) or on at least one phase of the rotating electrical machine (10); and a diagnostic module (30) that can detect a malfunction of the rotating electrical machine (10) on the basis of a current measurement provided by the current sensor (27).
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: July 19, 2022
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Mostafa Kadiri, Pierre Faverolle, Matthieu Mallevaey, Ludovic Doffe, Gauthier Ryckeboer
  • Publication number: 20210273526
    Abstract: The invention mainly relates to a rotating electrical machine (10) comprising: a rotor (12) provided with a rotor winding (13); a stator (11) provided with a winding (14) having a plurality of phases; a converter (16) comprising rectifying components (17) to which the phases of the stator (11) are connected; a voltage regulator (24) for adapting an excitation current (lexc) applied to the rotor winding (13) according to a difference between an output voltage (Liait) and a reference voltage; at least one current sensor (27) arranged at the output of the rotating electrical machine (10) or on at least one phase of the rotating electrical machine (10); and a diagnostic module (30) that can detect a malfunction of the rotating electrical machine (10) on the basis of a current measurement provided by the current sensor (27).
    Type: Application
    Filed: June 26, 2019
    Publication date: September 2, 2021
    Applicant: Valeo Equipements Electriques Moteur
    Inventors: Mostafa Kadiri, Pierre Faverolle, Matthieu Mallevaey, Ludovic Doffe, Gauthier Ryckeboer
  • 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
  • Patent number: 9887655
    Abstract: An excitation current-limited power generator includes a digital interface configured to be coupled to an engine control unit (ECU), a regulator coupled configured to be coupled to an excitation current input of an alternator, the excitation current controlling current generated by the alternator, a frequency sensor configured to measuring rotation speed of the alternator, and memory storing a communicated limit received by the digital interface and a first permanent limit, the regulator configured to limit the excitation current to the lesser of the first permanent limit and the communicated limit.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: February 6, 2018
    Assignees: INFINEON TECHNOLOGIES AG, VALEO EQUIPEMENTS ELECTRIQUES MOTEUR
    Inventors: Frank Auer, Christoph Seidl, Robert Hartmann, Ludovic Doffe, Cédric Agneray
  • Publication number: 20170346357
    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: Application
    Filed: May 19, 2017
    Publication date: November 30, 2017
    Inventors: Stéphane DESENCLOS, Eric DELCROIX, Mostafa KADIRI, Ludovic DOFFE, Benjamin POUCHELLE, Patrice AZOULAY
  • Publication number: 20170346431
    Abstract: An excitation current-limited power generator includes a digital interface configured to be coupled to an engine control unit (ECU), a regulator coupled configured to be coupled to an excitation current input of an alternator, the excitation current controlling current generated by the alternator, a frequency sensor configured to measuring rotation speed of the alternator, and memory storing a communicated limit received by the digital interface and a first permanent limit, the regulator configured to limit the excitation current to the lesser of the first permanent limit and the communicated limit.
    Type: Application
    Filed: May 31, 2016
    Publication date: November 30, 2017
    Inventors: Frank Auer, Christoph Seidl, Robert Hartmann, Ludovic Doffe, Cédric Agneray