Patents by Inventor Thanh-Tuan Truong

Thanh-Tuan Truong 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 for detecting a breakdown in a switching current source and corresponding power source
    Patent number: 9035658
    Abstract: A method of detecting a fault of a switching electricity source having a control stage responsive to a setpoint signal to deliver a control signal that is modulated with a predetermined duty ratio (?) to a power stage that is to deliver electricity to a load. The method includes the steps of: determining at least one nominal value (?min, ?max) for the duty ratio for normal operation, and at least one fault threshold (?SC, ?OC) as a function of the nominal value; determining at least one instantaneous value (?) of the duty ratio of the signal issued by the control stage; and comparing the instantaneous value with the fault threshold. A detection circuit implementing the method is also provided.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: May 19, 2015
    Assignee: SAGEM DEFENSE SECURITE
    Inventors: Thanh-Tuan Truong, Nicolas Geneste, Gwenaël Esteve
  • Method of detecting a fault in a permanent-magnet alternator and power supply device comprising a detector module
    Patent number: 8692572
    Abstract: A method of detecting a failure of an alternator supplying three-phase electricity to a load, the method comprising the steps of determining a duty ratio for each of the phases at the output of the alternator, determining phase differences between the phases at the output of the alternator; and determining the presence of a failure as a function of the phase differences and as a function of a comparison of the duty ratios. A power supply device is also provided for implementing the method.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: April 8, 2014
    Assignee: Sagem Defense Securite
    Inventors: Virginie Erdos, Thanh-Tuan Truong, Mehdi Dallagi
  • METHOD OF DETECTING A FAULT IN A PERMANENT-MAGNET ALTERNATOR AND POWER SUPPLY DEVICE COMPRISING A DETECTOR MODULE
    Publication number: 20130187678
    Abstract: A method of detecting a failure of an alternator supplying three-phase electricity to a load, the method comprising the steps of determining a duty ratio for each of the phases at the output of the alternator, determining phase differences between the phases at the output of the alternator; and determining the presence of a failure as a function of the phase differences and as a function of a comparison of the duty ratios. A power supply device is also provided for implementing the method.
    Type: Application
    Filed: July 18, 2011
    Publication date: July 25, 2013
    Applicant: SAGEM DEFENSE SECURITE
    Inventors: Virginie Erdos, Thanh-Tuan Truong, Mehdi Dallagi
  • METHOD FOR DETECTING A BREAKDOWN IN A SWITCHING CURRENT SOURCE AND CORRESPONDING POWER SOURCE
    Publication number: 20120256636
    Abstract: A method of detecting a fault of a switching electricity source having a control stage responsive to a setpoint signal to deliver a control signal that is modulated with a predetermined duty ratio (?) to a power stage that is to deliver electricity to a load. The method includes the steps of: determining at least one nominal value (?min, ?max) for the duty ratio for normal operation, and at least one fault threshold (?SC, ?OC) as a function of the nominal value; determining at least one instantaneous value (?) of the duty ratio of the signal issued by the control stage; and comparing the instantaneous value with the fault threshold. A detection circuit implementing the method is also provided.
    Type: Application
    Filed: December 16, 2010
    Publication date: October 11, 2012
    Inventors: Thanh-Tuan Truong, Nicolas Geneste, Gwenaël Esteve