Patents by Inventor Masakatu Daijou

Masakatu Daijou 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).

  • Controller for power converter
    Patent number: 7126832
    Abstract: The invention relates to a control unit of an electric power conversion apparatus that can decrease the high-order harmonic content generated by resonance of the inductance component of the primary wiring connecting an AC power supply 20 and the electric power conversion apparatus and a capacitor connected as a filter even if distortion occurs in an input current waveform.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: October 24, 2006
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Noriaki Sasaki, Akinori Nishihiro, Masakatu Daijou
  • Controller for power converter
    Publication number: 20060164874
    Abstract: The invention relates to a control unit of an electric power conversion apparatus that can decrease the high-order harmonic content generated by resonance of the inductance component of the primary wiring connecting an AC-power supply 20 and the electric power conversion apparatus and a capacitor connected as a filter even if distortion occurs in an input current waveform.
    Type: Application
    Filed: January 24, 2002
    Publication date: July 27, 2006
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Noriaki Sasaki, Akinori Nishihiro, Masakatu Daijou
  • Power converter including positive bus ground
    Patent number: 6160726
    Abstract: A power converter which can provide a power supply grounded on a positive electrode bus of a DC power supply without adding an additional power supply such as a switching regulator and reduce a circuit size and cost is described. When a switching device T1 of an upper arm is ON, the potential at point U is nearly equal to the potential at point P, and the current ic1 flows from the positive electrode of a first drive power supply 21 into a capacitor C1 via a diode D7 to charge the capacitor C1. A power supply Vc formed by the capacitor C1 can be used as a power supply grounded on a positive electrode bus P of the DC power supply.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: December 12, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Norihito Mori, Masakatu Daijou, Akinori Nishihiro, Takashi Yamada, Shigemi Kuriyama