Patents by Inventor Sakio Nishimiya

Sakio Nishimiya 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).

  • Circuit system for railroad vehicle
    Patent number: 11097620
    Abstract: A circuit system for a railroad vehicle according to an embodiment includes a power conversion unit, a first converter, a second converter, a power storage unit, and a control unit. The power conversion unit converts power supplied from an overhead wire into power for driving a motor for running mounted on a railroad vehicle. The first converter converts power supplied from the overhead wire into DC power. The second converter converts power output from the first converter into power for driving a load mounted on the railroad vehicle. The power storage unit is electrically connected to an input side of the second converter. The control unit inputs regenerative power output from the power conversion unit to the first converter and inputs power output from the first converter to the power storage unit in a case where it is determined that the railroad vehicle is being regenerated.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: August 24, 2021
    Assignees: Kabushiki Kaisha Toshiba, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Kohei Yamamoto, Sakio Nishimiya, Sonoko Miyajiri, Sho Sato, Hideyuki Shimizu, Kazuaki Yuuki, Tomoyuki Makino
  • CIRCUIT SYSTEM FOR RAILROAD VEHICLE
    Publication number: 20190299789
    Abstract: A circuit system for a railroad vehicle according to an embodiment includes a power conversion unit, a first converter, a second converter, a power storage unit, and a control unit. The power conversion unit converts power supplied from an overhead wire into power for driving a motor for running mounted on a railroad vehicle. The first converter converts power supplied from the overhead wire into DC power. The second converter converts power output from the first converter into power for driving a load mounted on the railroad vehicle. The power storage unit is electrically connected to an input side of the second converter. The control unit inputs regenerative power output from the power conversion unit to the first converter and inputs power output from the first converter to the power storage unit in a case where it is determined that the railroad vehicle is being regenerated.
    Type: Application
    Filed: June 21, 2019
    Publication date: October 3, 2019
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Kohei Yamamoto, Sakio Nishimiya, Sonoko Miyajiri, Sho Sato, Hideyuki Shimizu, Kazuaki Yuuki, Tomoyuki Makino