Patents by Inventor Liviu BAJAN

Liviu BAJAN 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).

  • Resonant circuit inverter with controllable operating point
    Patent number: 8976544
    Abstract: A resonant circuit inverter with a rectifier, a DC link circuit and an inverter including controllable switches. The resonant circuit inverter has a first control means, with which the operating point (Ap) of the resonant circuit inverter determined by a phase angle between an output current (Iist) and a voltage (Uist) at the output of the resonant circuit inverter is controlled. The first control means determines frequency of the output current (Iist). The resonant circuit inverter has a phase detector for determining an actual phase angle as a function of a zero crossing of the output current (Iist). The resonant circuit inverter has means for detecting a zero crossing of the output current (Iist). For determining the actual phase angle, the difference (Ti?Tt) is determined from measured time (Ti) and a known dead time (Tt).
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: March 10, 2015
    Assignee: AEG Power Solutions B.V.
    Inventors: Liviu Bajan, Samir Elgharib
  • Arrangement of a power semiconductor circuit
    Patent number: 8917508
    Abstract: The invention relates to a power electronic assembly (1, 2, 3) with a heat sink (2), a power semiconductor module (1) and a circuit arrangement (3) for controlling the power semiconductor module, wherein the heat sink (2) has at least two parallel channels through which a coolant can flow.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: December 23, 2014
    Assignee: AEG Power Solutions B.V.
    Inventors: Liviu Bajan, Samir El Gharib, Gerrit Schulte
  • Arrangement of a power semiconductor circuit
    Publication number: 20130077244
    Abstract: The invention relates to a power electronic assembly (1, 2, 3) with a heat sink (2), a power semiconductor module (1) and a circuit arrangement (3) for controlling the power semiconductor module, wherein the heat sink (2) has at least two parallel channels through which a coolant can flow.
    Type: Application
    Filed: April 4, 2012
    Publication date: March 28, 2013
    Applicant: AEG POWER SOLUTIONS B.V.
    Inventors: Liviu Bajan, Samir EL Gharib, Gerrit Schulte
  • Resonant Circuit Inverter With Controllable Operating Point
    Publication number: 20120275200
    Abstract: A resonant circuit inverter with a rectifier, a DC link circuit and an inverter including controllable switches. The resonant circuit inverter has a first control means, with which the operating point (Ap) of the resonant circuit inverter determined by a phase angle between an output current (Iist) and a voltage (Uist) at the output of the resonant circuit inverter is controlled. The first control means determines frequency of the output current (Iist). The resonant circuit inverter has a phase detector for determining an actual phase angle as a function of a zero crossing of the output current (Iist). The resonant circuit inverter has means for detecting a zero crossing of the output current (Iist). For determining the actual phase angle, the difference (Ti?Tt) is determined from measured time (Ti) and a known dead time (Tt).
    Type: Application
    Filed: November 18, 2011
    Publication date: November 1, 2012
    Inventors: Liviu BAJAN, Samir ELGHARIB