Patents by Inventor Sugahara TETSUO

Sugahara TETSUO 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).

  • Electric vehicle controller
    Patent number: 11518247
    Abstract: A drive control system controls travel of an electric vehicle, the drive control system including a plurality of induction motors, one inverter that drives the plurality of induction motors, and a controller that controls the inverter. The controller includes a coupling disconnection detecting unit that calculates an estimated torque value on the basis of a total current and a voltage command value at the start of the induction motors, and detects disconnection of a coupling provided between the induction motors and a drive mechanism of the electric vehicle on the basis of the estimated torque value calculated and a torque command value.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: December 6, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Sugahara Tetsuo, Sho Kato
  • ELECTRIC VEHICLE CONTROLLER
    Publication number: 20200317058
    Abstract: A drive control system controls travel of an electric vehicle, the drive control system including a plurality of induction motors, one inverter that drives the plurality of induction motors, and a controller that controls the inverter. The controller includes a coupling disconnection detecting unit that calculates an estimated torque value on the basis of a total current and a voltage command value at the start of the induction motors, and detects disconnection of a coupling provided between the induction motors and a drive mechanism of the electric vehicle on the basis of the estimated torque value calculated and a torque command value.
    Type: Application
    Filed: December 28, 2017
    Publication date: October 8, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Sugahara TETSUO, Sho KATO