Patents by Inventor Kouta SHIMOMURA

Kouta SHIMOMURA 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 method, controller, and control system for controlling a power converter including a resonant circuit
    Patent number: 11722052
    Abstract: A control method, a controller, and a control system including a converter and the controller are provided to improve load responsiveness of control by the converter. The converter has a primary circuit that includes a voltage generation circuit for generating a square wave and a resonant circuit for converting a waveform of the generated square wave, and a secondary circuit that is electromagnetically coupled to the primary circuit and that generates an induced electromotive force. The controller controls the voltage generation circuit by a control target power factor. To implement power factor-based control, the controller controls the voltage generation circuit, based on a derived power factor derived from an active power and an apparent power relevant to the resonant circuit in the primary circuit or a derived power factor derived from a phase of the primary circuit.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: August 8, 2023
    Assignee: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Eiji Hiraki, Kazuhiro Umetani, Kouta Shimomura
  • CONTROL METHOD, CONTROLLER, AND CONTROL SYSTEM
    Publication number: 20230093890
    Abstract: A control method, a controller, and a control system including a converter and the controller are provided to improve load responsiveness of control by the converter. The converter has a primary circuit that includes a voltage generation circuit for generating a square wave and a resonant circuit for converting a waveform of the generated square wave, and a secondary circuit that is electromagnetically coupled to the primary circuit and that generates an induced electromotive force. The controller controls the voltage generation circuit by a control target power factor. To implement power factor-based control, the controller controls the voltage generation circuit, based on a derived power factor derived from an active power and an apparent power relevant to the resonant circuit in the primary circuit or a derived power factor derived from a phase of the primary circuit.
    Type: Application
    Filed: January 20, 2022
    Publication date: March 30, 2023
    Applicant: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Eiji HIRAKI, Kazuhiro UMETANI, Kouta SHIMOMURA