Patents by Inventor Yuichiro Takamune

Yuichiro Takamune 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).

  • Power conversion device
    Patent number: 8547041
    Abstract: A power conversion device comprises a power conversion unit of a three phase full bridge type including upper arm switching devices and lower arm switching devices, and a controller that outputs drive signals to these switching devices. This power conversion device forms alternately a first interval in which the upper arm switching devices and the lower arm switching devices are switched to ON for different phases, and a second interval in which, for all phases, either the upper arm switching devices or the lower arm switching devices are switched to ON, according to electrical angle.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: October 1, 2013
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Kimihisa Furukawa, Hideki Miyazaki, Shigeyuki Yoshihara, Yuichiro Takamune
  • Power Conversion Device
    Publication number: 20110025240
    Abstract: A power conversion device comprises a power conversion unit of a three phase full bridge type including upper arm switching devices and lower arm switching devices, and a controller that outputs drive signals to these switching devices. This power conversion device forms alternately a first interval in which the upper arm switching devices and the lower arm switching devices are switched to ON for different phases, and a second interval in which, for all phases, either the upper arm switching devices or the lower arm switching devices are switched to ON, according to electrical angle.
    Type: Application
    Filed: July 29, 2010
    Publication date: February 3, 2011
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Kimihisa FURUKAWA, Hideki Miyazaki, Shigeyuki Yoshihara, Yuichiro Takamune