Patents by Inventor Hideru SAKATA

Hideru SAKATA 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).

  • Condition monitoring device and condition monitoring method for wind turbine power generating apparatus
    Patent number: 11708816
    Abstract: A condition monitoring device for a wind turbine power generating apparatus provided with an auxiliary motor power supply system including a power-supply-side line connected to a power supply and a plurality of auxiliary-motor-side lines diverging from the power-supply-side line and connected to a plurality of auxiliary motors, respectively, comprises: a current measurement device for measuring a current flowing through the power-supply-side line; and a control device for controlling the plurality of auxiliary motors. The control device is configured to, when a generator of the wind turbine power generating apparatus is in a standby state where power generation is stopped at a low wind speed, execute a single sequential operation mode in which each of the plurality of auxiliary motors is singly and sequentially operated. The current measurement device is configured to measure a current flowing through the power-supply-side line during execution of the single sequential operation mode by the control device.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: July 25, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Mitsuya Baba, Yasushi Morishita, Minoru Sugiura, Kazuhiro Tsuyuki, Hideru Sakata
  • CONDITION MONITORING DEVICE AND CONDITION MONITORING METHOD FOR WIND TURBINE POWER GENERATING APPARATUS
    Publication number: 20210332797
    Abstract: A condition monitoring device for a wind turbine power generating apparatus provided with an auxiliary motor power supply system including a power-supply-side line connected to a power supply and a plurality of auxiliary-motor-side lines diverging from the power-supply-side line and connected to a plurality of auxiliary motors, respectively, comprises: a current measurement device for measuring a current flowing through the power-supply-side line; and a control device for controlling the plurality of auxiliary motors. The control device is configured to, when a generator of the wind turbine power generating apparatus is in a standby state where power generation is stopped at a low wind speed, execute a single sequential operation mode in which each of the plurality of auxiliary motors is singly and sequentially operated. The current measurement device is configured to measure a current flowing through the power-supply-side line during execution of the single sequential operation mode by the control device.
    Type: Application
    Filed: April 27, 2021
    Publication date: October 28, 2021
    Inventors: Mitsuya BABA, Yasushi MORISHITA, Minoru SUGIURA, Kazuhiro TSUYUKI, Hideru SAKATA