Patents by Inventor Kouji Fukusumi

Kouji Fukusumi 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).

  • Motor controller
    Patent number: 7459879
    Abstract: A control apparatus for an electric motor, in which a current controller giving multiphase voltage commands to a drive circuit for an inverter includes a normal-mode current controller for use in a normal mode, an abnormal-mode current controller for use in an abnormal mode, and an abnormality decision device. In a case of an abnormality occurring to one phase of an electric motor or the inverter, the controller is altered, and the abnormal-mode multiphase voltage commands which are generated by the abnormal-mode current controller are set as the multiphase voltage commands for the inverter drive circuit.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: December 2, 2008
    Assignee: Mitsubishi Electric Corporation
    Inventors: Isao Kezobo, Masahiro Kimata, Kazumichi Tsutsumi, Chiaki Fujimoto, Kouji Fukusumi, Noriyuki Inoue
  • Motor controller
    Publication number: 20070176577
    Abstract: A control apparatus for an electric motor, in which a current controller giving multiphase voltage commands to a drive circuit for an inverter includes a normal-mode current controller for use in a normal mode, an abnormal-mode current controller for use in an abnormal mode, and an abnormality decision device. In a case of an abnormality occurring to one phase of an electric motor or the inverter, the controller is altered, and the abnormal-mode multiphase voltage commands which are generated by the abnormal-mode current controller are set as the multiphase voltage commands for the inverter drive circuit.
    Type: Application
    Filed: March 16, 2005
    Publication date: August 2, 2007
    Inventors: Isao Kezobo, Masahiro Kimata, Kazumichi Tsutsumi, Chiaki Fujimoto, Kouji Fukusumi, Noriyuki Inoue
  • Motor abnormality detecting apparatus
    Patent number: 6831477
    Abstract: An identification is made of an abnormal condition in a motor due to an influence of a disturbance voltage, without addition of hardware, by estimating the disturbance voltage based on a target voltage and actual current flowing in the motor.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: December 14, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kouji Fukusumi, Masahiko Kurishige, Noriyuki Inoue, Seiji Sakanishi, Kenichi Kawakami, Takayuki Kifuku
  • Motor abnormality detecting apparatus
    Publication number: 20030179004
    Abstract: A judgment is made of an abnormal condition of a motor due to an influence of a disturbance voltage without addition of hardware by estimating the disturbance voltage on the basis of a target voltage and an actual current of the motor.
    Type: Application
    Filed: March 5, 2003
    Publication date: September 25, 2003
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kouji Fukusumi, Masahiko Kurishige, Noriyuki Inoue, Seiji Sakanishi, Kenichi Kawakami, Takayuki Kifuku