Patents by Inventor David LECHAT

David LECHAT 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).

  • Method and system for detecting a defect on the DC power supply bus of a power converter
    Patent number: 9176199
    Abstract: The invention relates to a method for detecting a defect on the DC power supply bus of a power converter connected to an electrical distribution network (RD). The method comprises steps of: determination of a mean value ( V) of the voltage (Vbus) of the DC power supply bus of the converter, determination of the ripple ({tilde over (V)}ppH1) of the voltage (Vbus) of the DC power supply bus, monitoring of the variation of the said mean value ( V) with respect to the said ripple ({tilde over (V)}ppH1), determination of a defect on the DC power supply bus as a function of the rate of the said variation, the said defect consisting of an anomaly on the inductor (L1) of the DC power supply bus, a power overload of the power converter, or advanced wear of the bus capacitor (Cbus).
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: November 3, 2015
    Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SAS
    Inventors: David Lechat, Yves Laurent Allaert
  • METHOD AND SYSTEM FOR DETECTING A DEFECT ON THE DC POWER SUPPLY BUS OF A POWER CONVERTER
    Publication number: 20130293258
    Abstract: The invention relates to a method for detecting a defect on the DC power supply bus of a power converter connected to an electrical distribution network (RD). The method comprises steps of: determination of a mean value ( V) of the voltage (Vbus) of the DC power supply bus of the converter, determination of the ripple ({tilde over (V)}ppH1) of the voltage (Vbus) of the DC power supply bus, monitoring of the variation of the said mean value ( V) with respect to the said ripple ({tilde over (V)}ppH1), determination of a defect on the DC power supply bus as a function of the rate of the said variation, the said defect consisting of an anomaly on the inductor (L1) of the DC power supply bus, a power overload of the power converter, or advanced wear of the bus capacitor (Cbus).
    Type: Application
    Filed: April 5, 2013
    Publication date: November 7, 2013
    Applicant: Schneider Toshiba Inverter Europe SAS
    Inventors: David LECHAT, Yves Laurent Allaert