Patents by Inventor Koichi Hidese

Koichi Hidese 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).

  • Control apparatus for semiconductor power converter
    Patent number: 7480161
    Abstract: A control apparatus for controlling a three- or single-phase semiconductor power converter employing fixed-pulse switching patterns superposes a DC component on an AC output voltage, to suppress asymmetrical magnetization of a transformer connected to the power converter. The three-phase semiconductor power converter 1 provides an AC output. The voltage of the AC output is changed by the transformer 12.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: January 20, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akihisa Kataoka, Tomotsugu Ishizuka, Koichi Hidese, Shigeru Tanaka
  • CONTROL APPARATUS FOR SEMICONDUCTOR POWER CONVERTER
    Publication number: 20080037300
    Abstract: A control apparatus for controlling a three- or single-phase semiconductor power converter employing fixed-pulse switching patterns superposes a DC component on an AC output voltage, to suppress asymmetrical magnetization of a transformer connected to the power converter. The three-phase semiconductor power converter 1 provides an AC output. The voltage of the AC output is changed by the transformer 12.
    Type: Application
    Filed: July 24, 2007
    Publication date: February 14, 2008
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Akihisa Kataoka, Tomotsugu Ishizuka, Koichi Hidese, Shigeru Tanaka