Patents by Inventor Yoichi Egashira

Yoichi Egashira 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).

  • Power conversion apparatus
    Patent number: 8970154
    Abstract: A resonance suppression control block includes a high-pass filter for extracting an AC component of DC link voltage, and a gain section for outputting a correction signal obtained by multiplying the AC component by a gain. A control unit controls an inverter based on a signal obtained by adding the correction signal to the voltage instruction. Thus, a power conversion apparatus with a simple configuration can be obtained that can suppress resonance of a DC link section and omit extra work for performing adjustment again in accordance with a power supply frequency.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: March 3, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shuta Ishikawa, Shinichi Furutani, Masanori Kato, Yoichi Egashira, Yuki Kawauchi
  • POWER CONVERSION APPARATUS
    Publication number: 20130214717
    Abstract: A resonance suppression control block includes a high-pass filter for extracting an AC component of DC link voltage, and a gain section for outputting a correction signal obtained by multiplying the AC component by a gain. A control unit controls an inverter based on a signal obtained by adding the correction signal to the voltage instruction. Thus, a power conversion apparatus with a simple configuration can be obtained that can suppress resonance of a DC link section and omit extra work for performing adjustment again in accordance with a power supply frequency.
    Type: Application
    Filed: November 1, 2011
    Publication date: August 22, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shuta Ishikawa, Shinichi Furutani, Masanori Kato, Yoichi Egashira, Yuki Kawauchi