Patents by Inventor Maxime ROUDAUT

Maxime ROUDAUT 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: 12051937
    Abstract: A method of controlling a wireless power transfer system comprising a primary stage and a secondary stage is provided. The primary stage comprises a DC/DC converter configured to generate a DC output, a DC/AC inverter configured to receive the DC output and to generate an AC output according to a variable switching frequency, and a primary coil configured to transfer power to the secondary stage in response to the DC/AC inverter generating the AC output. The switching frequency of the DC/AC inverter is adjusted to cause a phase angle between an input current and an input voltage of the primary coil to be less than or equal to a predetermined threshold. The DC output of the DC/DC converter is controlled to cause a desired amount of power to be transferred from the primary coil at the adjusted switching frequency.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: July 30, 2024
    Assignee: EnerSys Delaware Inc.
    Inventors: Damien Brelivet, Maxime Roudaut, Patrick Dehem, Paul Antoine Gori, David Letombe
  • Patent number: 12040121
    Abstract: An electrical transformer and method of manufacturing an electrical transformer. The electrical transformer comprises a set of primary windings comprising first and second primary windings connected in parallel and first and second sets of secondary windings. Each of the first and second sets comprises a plurality of secondary windings that are connected in parallel. The secondary windings of the first set are electrically isolated from the secondary windings of the second set. The set of primary windings and the first and second sets of secondary windings are arranged in a stacked structure in which the secondary windings of the first set are interleaved with the secondary windings of the second set, and at least one secondary winding of the first set and/or at least one secondary winding of the second set is arranged between the first and second primary windings.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: July 16, 2024
    Assignee: EnerSys Delaware Inc.
    Inventors: Damien Brelivet, Maxime Roudaut, Patrick Dehem, Paul Antoine Gori, David Letombe
  • Publication number: 20210151244
    Abstract: An electrical transformer and method of manufacturing an electrical transformer. The electrical transformer comprises a set of primary windings comprising first and second primary windings connected in parallel and first and second sets of secondary windings. Each of the first and second sets comprises a plurality of secondary windings that are connected in parallel. The secondary windings of the first set are electrically isolated from the secondary windings of the second set. The set of primary windings and the first and second sets of secondary windings are arranged in a stacked structure in which the secondary windings of the first set are interleaved with the secondary windings of the second set, and at least one secondary winding of the first set and/or at least one secondary winding of the second set is arranged between the first and second primary windings.
    Type: Application
    Filed: November 17, 2020
    Publication date: May 20, 2021
    Inventors: Damien BRELIVET, Maxime ROUDAUT, Patrick DEHEM, Paul Antoine GORI, David LETOMBE
  • Publication number: 20210091591
    Abstract: A method of controlling a wireless power transfer system comprising a primary stage and a secondary stage is provided. The primary stage comprises a DC/DC converter configured to generate a DC output, a DC/AC inverter configured to receive the DC output and to generate an AC output according to a variable switching frequency, and a primary coil configured to transfer power to the secondary stage in response to the DC/AC inverter generating the AC output. The switching frequency of the DC/AC inverter is adjusted to cause a phase angle between an input current and an input voltage of the primary coil to be less than or equal to a predetermined threshold. The DC output of the DC/DC converter is controlled to cause a desired amount of power to be transferred from the primary coil at the adjusted switching frequency.
    Type: Application
    Filed: September 21, 2020
    Publication date: March 25, 2021
    Inventors: Damien BRELIVET, Maxime ROUDAUT, Patrick DEHEM, Paul Antoine GORI, David LETOMBE