Patents by Inventor Ryuta SAKA

Ryuta SAKA 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).

  • Photovoltaic system
    Patent number: 10536001
    Abstract: A photovoltaic system includes photovoltaic cells, inverters, a reduced electricity output state determiner which determines whether each of the photovoltaic cells is in a reduced electricity output state, a first command value generator which generates a first command value for decreasing a first power factor of a first inverter determined as in the reduced electricity output state, a second command value generator which generates a second command value for increasing a second power factor of at least one of second inverters so as to compensate for output power of the first inverter, and a controller which controls the inverters.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: January 14, 2020
    Assignee: Toshiba Mitsubishi-Electric Industrial Systems Corporation
    Inventors: Yuji Matsuoka, Tatsuaki Ambo, Naoki Fujiwara, Paul Bixel, Ryuta Saka
  • PHOTOVOLTAIC SYSTEM
    Publication number: 20180138713
    Abstract: A photovoltaic system includes photovoltaic cells, inverters, a reduced electricity output state determiner which determines whether each of the photovoltaic cells is in a reduced electricity output state, a first command value generator which generates a first command value for decreasing a first power factor of a first inverter determined as in the reduced electricity output state, a second command value generator which generates a second command value for increasing a second power factor of at least one of second inverters so as to compensate for output power of the first inverter, and a controller which controls the inverters.
    Type: Application
    Filed: November 11, 2016
    Publication date: May 17, 2018
    Applicant: Toshiba Mitsubishi-Electric Industrial Systems Corporation
    Inventors: Yuji MATSUOKA, Tatsuaki AMBO, Naoki FUJIWARA, Paul BIXEL, Ryuta SAKA