Patents by Inventor Yudai Konaka

Yudai Konaka 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).

  • Protection device
    Patent number: 11424697
    Abstract: A protection device provided between a synchronous motor having a plurality of windings and a motor driving device for driving the synchronous motor includes: a switching unit for making and breaking the connection between the motor driving device and the synchronous motor; a dynamic brake circuit including resistors and switches, to short-circuit the plurality of windings between the switching unit and the synchronous motor via the resistors; and a control device for controlling the switching unit and the dynamic brake circuit. The control device controls the switches in the dynamic brake circuit to short-circuit the plurality of windings, and then controls the switching unit to cut off the connection between the motor driving device and the synchronous motor.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: August 23, 2022
    Assignee: FANUC CORPORATION
    Inventors: Yudai Konaka, Kenji Kawai
  • PROTECTION DEVICE
    Publication number: 20200328699
    Abstract: A protection device provided between a synchronous motor having a plurality of windings and a motor driving device for driving the synchronous motor includes: a switching unit for making and breaking the connection between the motor driving device and the synchronous motor; a dynamic brake circuit including resistors and switches, to short-circuit the plurality of windings between the switching unit and the synchronous motor via the resistors; and a control device for controlling the switching unit and the dynamic brake circuit. The control device controls the switches in the dynamic brake circuit to short-circuit the plurality of windings, and then controls the switching unit to cut off the connection between the motor driving device and the synchronous motor.
    Type: Application
    Filed: April 6, 2020
    Publication date: October 15, 2020
    Inventors: Yudai Konaka, Kenji Kawai