Patents by Inventor Hironari Kaneda

Hironari Kaneda 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 system, controller, and control method for wound induction machine
    Patent number: 10291159
    Abstract: According to one embodiment, a control system includes a chopper, a short-circuit unit, a voltage detector circuit, and a controller. The chopper reduces a direct current voltage between a converter connected to a stator in a wound induction machine and an inverter connected to a rotor in the wound induction machine. The short-circuit unit shorts a wire used for connection between the rotor and the inverter and the voltage detector circuit is to detect the direct current voltage. The controller causes driving the chopper and, at the same time, outputting from the inverter an alternating current over which a direct current component is superimposed when a voltage value exceeds a first predetermined value, and causes driving the short-circuit unit and, at the same time, halting the inverter when the voltage value exceeds a second predetermined value.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: May 14, 2019
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporation
    Inventors: Ryuta Hasegawa, Takahisa Kageyama, Kiyoshi Kusunoki, Teruyuki Ishizuki, Yuichi Shiozaki, Takashi Fujita, Hironari Kaneda
  • CONTROL SYSTEM, CONTROLLER, AND CONTROL METHOD FOR WOUND INDUCTION MACHINE
    Publication number: 20180278183
    Abstract: According to one embodiment, a control system includes a chopper, a short-circuit unit, a voltage detector circuit, and a controller. The chopper reduces a direct current voltage between a converter connected to a stator in a wound induction machine and an inverter connected to a rotor in the wound induction machine. The short-circuit unit shorts a wire used for connection between the rotor and the inverter and the voltage detector circuit is to detect the direct current voltage. The controller causes driving the chopper and, at the same time, outputting from the inverter an alternating current over which a direct current component is superimposed when a voltage value exceeds a first predetermined value, and causes driving the short-circuit unit and, at the same time, halting the inverter when the voltage value exceeds a second predetermined value.
    Type: Application
    Filed: February 8, 2018
    Publication date: September 27, 2018
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporation
    Inventors: Ryuta Hasegawa, Takahisa Kageyama, Kiyoshi Kusunoki, Teruyuki Ishizuki, Yuichi Shiozaki, Takashi Fujita, Hironari Kaneda