Patents by Inventor Stefan Mollov

Stefan Mollov 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: 9774185
    Abstract: A continuous power supply system suitable for input connection to N continuous power supply networks that are distinct and connected to a single ground potential, where N is an integer greater than or equal to 2. Said continuous power supply system comprises means for switching/selecting one of the power supply networks, means for regulating an output voltage established by the power supply system, and a control unit for the means for switching/selecting and for the means for regulating. The means for regulating the output voltage includes N distinct buck-boost converters with shared inductance. A given buck-boost converter is dedicated to each power supply network for regulating the voltage output of the power supply system on the basis of an input voltage established by the corresponding power supply network.
    Type: Grant
    Filed: November 22, 2012
    Date of Patent: September 26, 2017
    Assignee: THALES
    Inventors: Philippe Marc Antoine Bogdanik, David Costes, Stefan Mollov
  • Patent number: 9739735
    Abstract: A method for on-line monitoring an electrolytic capacitor condition comprising: measuring a voltage ripple across the electrolytic capacitor and the current ripple flowing through the electrolytic capacitor; measuring the temperature of the electrolytic capacitor; emulating the monitored electrolytic capacitor using a capacitor model comprising a capacitor and a solid state adjustable resistor, applying one of the measured ripple to the capacitor model, adjusting the solid state adjustable resistor to minimize the error between an estimated ripple provided by the capacitor model and the other measured ripple not applied to the capacitor model, and estimating an equivalent series resistance of the monitored electrolytic capacitor using value of the solid state adjustable resistor.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: August 22, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Stefan Mollov, Laurent Foube
  • Publication number: 20160377565
    Abstract: A method for on-line monitoring an electrolytic capacitor condition comprising: measuring a voltage ripple across the electrolytic capacitor and the current ripple flowing through the electrolytic capacitor; measuring the temperature of the electrolytic capacitor; emulating the monitored electrolytic capacitor using a capacitor model comprising a capacitor and a solid state adjustable resistor, applying one of the measured ripple to the capacitor model, adjusting the solid state adjustable resistor to minimize the error between an estimated ripple provided by the capacitor model and the other measured ripple not applied to the capacitor model, and estimating an equivalent series resistance of the monitored electrolytic capacitor using value of the solid state adjustable resistor.
    Type: Application
    Filed: June 10, 2016
    Publication date: December 29, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventors: Stefan MOLLOV, Laurent FOUBE
  • Patent number: 9515012
    Abstract: The present invention concerns a package of power dies composed of a first part and a second part, the first part including a plaque having cavities on which dies are placed, the plaque is placed on a first, a second, and a third metallic plates placed on an electric insulation substrate placed on a fourth metallic plate, the second part including a fifth and a sixth metallic plates placed on another electric insulation substrate placed on a seventh metallic plate, the dies are divided into a first group of dies and a second group of dies and wherein the first and second plate are a positive and negative DC voltage connections, the third plate is a gate connection of the second group of dies, the fourth plate is an AC voltage connection and the fifth plate is a gate connection of the first group of dies.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: December 6, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Jeffrey Ewanchuk, Stefan Mollov, Guillaume Lefevre
  • Patent number: 9469411
    Abstract: The invention relates to a power supply system that is adapted be connected in input to N distinct power supply grids (R1, . . . , RN) delivering a direct or alternating input voltage (V1, VN) and to deliver a direct distribution voltage (VBUS), N being an integer greater than or equal to 2, of the type comprising a distribution bus operating under the distribution voltage (VBUS), N unidirectional converters (C1, . . . , CN) that can respectively be connected in input to a given power grid (R1, . . . , RN), and control means capable of controlling the unidirectional converters (C1, . . . CN). The power supply system also includes an energy storage device connected to the distribution bus and having a quantity of energy (E), and the control means are adapted to control the unidirectional converters (C1, . . . CN) simultaneously to regulate the electrical power (P1, . . . PN) delivered by each of said unidirectional converters (C1, . . . , CN) as a function of the quantity of energy (E).
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: October 18, 2016
    Assignee: THALES
    Inventors: Christophe Taurand, Stefan Mollov
  • Publication number: 20150235930
    Abstract: The present invention concerns a package of power dies composed of a first part and a second part, the first part including a plaque having cavities on which dies are placed, the plaque is placed on a first, a second, and a third metallic plates placed on an electric insulation substrate placed on a fourth metallic plate, the second part including a fifth and a sixth metallic plates placed on another electric insulation substrate placed on a seventh metallic plate, the dies are divided into a first group of dies and a second group of dies and wherein the first and second plate are a positive and negative DC voltage connections, the third plate is a gate connection of the second group of dies, the fourth plate is an AC voltage connection and the fifth plate is a gate connection of the first group of dies.
    Type: Application
    Filed: February 12, 2015
    Publication date: August 20, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Jeffrey EWANCHUK, Stefan MOLLOV, Guillaume LEFEVRE
  • Publication number: 20140319908
    Abstract: A continuous power supply system suitable for input connection to N continuous power supply networks that are distinct and connected to a single ground potential, where N is an integer greater than or equal to 2. Said continuous power supply system comprises means for switching/selecting one of the power supply networks, means for regulating an output voltage established by the power supply system, and a control unit for the means for switching/selecting and for the means for regulating. The means for regulating the output voltage includes N distinct buck-boost converters with shared inductance. A given buck-boost converter is dedicated to each power supply network for regulating the voltage output of the power supply system on the basis of an input voltage established by the corresponding power supply network.
    Type: Application
    Filed: November 22, 2012
    Publication date: October 30, 2014
    Applicant: THALES
    Inventors: Philippe Marc Antoine Bogdanik, David Costes, Stefan Mollov