Patents by Inventor Yuki MINAKUCHI

Yuki MINAKUCHI 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).

  • Temperature estimation device, motor control device, and temperature estimation method
    Patent number: 11522486
    Abstract: A temperature estimation device estimates a drive duty ratio by taking account of the influence of ambient temperature on the energization to a coil part, on the basis of a drive duty ratio and the ambient temperature, and estimates the power consumption of a motor when the coil part is energized with the estimated drive duty ratio, the power consumption of the motor, this power consumption being accompanied by the heat dissipation of the coil part, the power difference between both the power consumption values, the temperature time constant of the coil part, and a temperature variation during a period of the temperature time constant of the coil part, and estimates the temperature variation of the coil part from the ambient temperature on the basis of these estimated values and a last temperature variation of the coil part.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: December 6, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshitaka Ikitake, Ryoichi Ishihara, Yuki Minakuchi, Tomohiro Okumura, Daishi Iwasa
  • TEMPERATURE ESTIMATION DEVICE, MOTOR CONTROL DEVICE, AND TEMPERATURE ESTIMATION METHOD
    Publication number: 20210336576
    Abstract: A temperature estimation device estimates a drive duty ratio by taking account of the influence of ambient temperature on the energization to a coil part, on the basis of a drive duty ratio and the ambient temperature, and estimates the power consumption of a motor when the coil part is energized with the estimated drive duty ratio, the power consumption of the motor, this power consumption being accompanied by the heat dissipation of the coil part, the power difference between both the power consumption values, the temperature time constant of the coil part, and a temperature variation during a period of the temperature time constant of the coil part, and estimates the temperature variation of the coil part from the ambient temperature on the basis of these estimated values and a last temperature variation of the coil part.
    Type: Application
    Filed: November 13, 2018
    Publication date: October 28, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshitaka IKITAKE, Ryoichi ISHIHARA, Yuki MINAKUCHI, Tomohiro OKUMURA, Daishi IWASA