Patents by Inventor Nikola Celanovic

Nikola Celanovic 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).

  • Signal transmission system for driving a power semiconductor switch, and a converter having such a signal transmission system
    Publication number: 20080160923
    Abstract: A signal transmission system is used to drive at least one power semiconductor switch (S1, S2, . . . , Sn) from a controller (11). The controller (11) can transmit at least one control signal to at least one modulator (M1, M2, . . . , Mn) using at least one first transmission path (3). Each power semiconductor switch (S1, S2, . . . , Sn) is connected to a respective control electrode driver stage (G1, G2, . . . , Gn) and the at least one modulator (M1, M2, . . . , Mn) can transmit at least one drive signal to each of the control electrode driver stages (G1, G2, . . . , Gn) using a respective second transmission path (4). At least one control signal and/or a drive signal can be transmitted using electromagnetic radiation and the associated transmission path (3, 4) is wireless.
    Type: Application
    Filed: April 10, 2007
    Publication date: July 3, 2008
    Applicant: ABB Research Ltd
    Inventors: Nikola Celanovic, Luc Meysenc, Michael Mazur, Paul Rudolf
  • Motor drive converter and method with neutral point drift compensation
    Patent number: 6534949
    Abstract: A high power motor drive converter comprises: a three level neutral point clamped (NPC) output power conversion stage including switches for supplying power to an AC drive motor; a split series connected DC capacitor bank coupled in parallel with the NPC output power conversion stage; and a controller for selecting switch positions for controlling the NPC output power conversion stage and compensating for a neutral point voltage imbalance of the DC capacitor bank by adjusting amplitudes of carrier voltages according to an amount of voltage imbalance in the split series connected DC capacitor bank.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: March 18, 2003
    Assignee: General Electric Company
    Inventors: Paul Michael Szczesny, Nikola Celanovic, James Patrick Lyons, Vlatko Vlatkovic
  • Motor drive converter and method with neutral point drift compensation
    Publication number: 20020172058
    Abstract: A high power motor drive converter comprises: a three level neutral point clamped (NPC) output power conversion stage including switches for supplying power to an AC drive motor; a split series connected DC capacitor bank coupled in parallel with the NPC output power conversion stage; and a controller for selecting switch positions for controlling the NPC output power conversion stage and compensating for a neutral point voltage imbalance of the DC capacitor bank by adjusting amplitudes of carrier voltages according to an amount of voltage imbalance in the split series connected DC capacitor bank.
    Type: Application
    Filed: March 29, 2001
    Publication date: November 21, 2002
    Inventors: Paul Michael Szczesny, Nikola Celanovic, James Patrick Lyons, Vlatko Vlatkovic