Patents by Inventor Yuichi AKUTAGAWA

Yuichi AKUTAGAWA 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).

  • Bidirectional DC/DC converter
    Patent number: 9570991
    Abstract: During a dead time, a resonance current generated by a load current that flows in a resonance inductor and a resonance current generated by an excitation current of a transformer flow in a resonance circuit constituted by the resonance inductor and capacitors that exist in parallel to respective switching elements. A controller performs a turning off operation on the switching elements at a timing that the resonance current generated by the load current and the resonance current generated by the excitation current are cancelled each other during the dead time.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: February 14, 2017
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuichi Akutagawa, Hideki Tamura
  • BIDIRECTIONAL DC/DC CONVERTER
    Publication number: 20160072390
    Abstract: During a dead time, a resonance current generated by a load current that flows in a resonance inductor and a resonance current generated by an excitation current of a transformer flow in a resonance circuit constituted by the resonance inductor and capacitors that exist in parallel to respective switching elements. A controller performs a turning off operation on the switching elements at a timing that the resonance current generated by the load current and the resonance current generated by the excitation current are cancelled each other during the dead time.
    Type: Application
    Filed: April 17, 2014
    Publication date: March 10, 2016
    Inventors: Yuichi AKUTAGAWA, Hideki TAMURA