Patents by Inventor Tenjiro HIWATARI

Tenjiro HIWATARI 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).

  • Publication number: 20240250626
    Abstract: A magnetic gear embedded rotating electric machine control device, which controls voltage applied to a stator winding of a rotating electric machine having a magnetic gear therein so that an output from the rotating electric machine follows an output command, includes: a damping command generator which generates a damping command using an angle between a stator and a high-speed rotor of the rotating electric machine detected by an angle detector; a first adder which adds the damping command to the output command, to generate a corrected output command; and an output controller which controls an output generated by the rotating electric machine, in accordance with the corrected output command.
    Type: Application
    Filed: August 3, 2021
    Publication date: July 25, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Akira SATAKE, Tenjiro HIWATARI, Atsushi YAMAMOTO
  • Publication number: 20230402942
    Abstract: A power conversion device comprises: power conversion circuitry for converting DC power into AC power and supplying it into a load according to a switching state quantity defined by combinations among switching parameters of switching devices; a voltage output calculation device for calculating a voltage output value on the power conversion circuitry, based on the switching state quantity; an integration value calculation device for acquiring a voltage reference integration value and a voltage output integration value by integrating a voltage reference value and the calculated voltage output value; a switching update-determination unit for outputting an update signal of the switching state quantity, based on the voltage reference integration value, its allowance value, and the voltage output integration value; and a switching determination table for determining a switching state quantity of the switching devices, based on the voltage reference integration value, the voltage output integration value and the up
    Type: Application
    Filed: November 18, 2021
    Publication date: December 14, 2023
    Applicants: Mitsubishi Electric Corporation, National University Corporation Nagaoka University of Technology
    Inventors: Tenjiro HIWATARI, Sota SANO, Akira SATAKE, Kiyoshi OHISHI, Yuki YOKOKURA, Yuto KOBAYASHI
  • Patent number: 11177757
    Abstract: The present invention includes a control amount calculation unit which calculates two or more control amounts each indicating a driving condition of a rotary electric machine on the basis of output current from and a switching state in a power converter; a limitation range-provided command value generation unit which generates limitation range-provided command values relative to command values for the control amounts; and a switching state determination unit which determines a switching state such that each control amount falls within the limitation range of the corresponding limitation range-provided command value. For at least one of the limitation range-provided command values, the limitation range thereof is temporally changed on the basis of the driving condition of the rotary electric machine.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: November 16, 2021
    Assignees: MITSUBISHI ELECTRIC CORPORATION, NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGY
    Inventors: Sota Sano, Akira Satake, Kiyoshi Ohishi, Yuki Yokokura, Tenjiro Hiwatari
  • Publication number: 20210203261
    Abstract: The present invention includes a control amount calculation unit which calculates two or more control amounts each indicating a driving condition of a rotary electric machine on the basis of output current from and a switching state in a power converter; a limitation range-provided command value generation unit which generates limitation range-provided command values relative to command values for the control amounts; and a switching state determination unit which determines a switching state such that each control amount falls within the limitation range of the corresponding limitation range-provided command value. For at least one of the limitation range-provided command values, the limitation range thereof is temporally changed on the basis of the driving condition of the rotary electric machine.
    Type: Application
    Filed: December 7, 2017
    Publication date: July 1, 2021
    Applicants: Mitsubishi Electric Corporation, National University Corporation Nagaoka University of Technology
    Inventors: Sota SANO, Akira SATAKE, Kiyoshi OHISHI, Yuki YOKOKURA, Tenjiro HIWATARI