Patents by Inventor Teppei Fujitsuka

Teppei Fujitsuka 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).

  • Wind turbine generator system
    Patent number: 8043055
    Abstract: A wind turbine generator system is provided with a nacelle supporting a wind turbine rotor, a nacelle rotation mechanism, an anemometer, and a control apparatus controlling the nacelle rotation mechanism. Said control apparatus calculates the wind direction deviation from the wind direction measured by the anemometer and the direction of the wind turbine rotor. Said control apparatus performs a yaw rotation of the nacelle by the nacelle rotation mechanism when any of conditions (1) and (2) is satisfied; the condition (1) is a condition under which a state where the absolute value of said wind direction deviation is equal to or more than a first threshold value continues for a first duration predetermined, and the condition (2) is a condition under which a state where the absolute value of said wind direction deviation is equal to or more than a second threshold value larger than said first threshold value continues for a second duration shorter than said first duration.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: October 25, 2011
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Atsushi Matsuo, Koji Fukami, Toshihide Noguchi, Kazuki Hayashida, Teppei Fujitsuka, Yuji Yatomi
  • WIND TURBINE GENERATOR AND ITS CONTROL METHOD
    Publication number: 20100080702
    Abstract: A wind turbine generator system is provided with a nacelle supporting a wind turbine rotor, a nacelle rotation mechanism, an anemometer, and a control apparatus controlling the nacelle rotation mechanism. Said control apparatus calculates the wind direction deviation from the wind direction measured by the anemometer and the direction of the wind turbine rotor. Said control apparatus performs a yaw rotation of the nacelle by the nacelle rotation mechanism when any of conditions (1) and (2) is satisfied; the condition (1) is a condition under which a state where the absolute value of said wind direction deviation is equal to or more than a first threshold value continues for a first duration predetermined, and the condition (2) is a condition under which a state where the absolute value of said wind direction deviation is equal to or more than a second threshold value larger than said first threshold value continues for a second duration shorter than said first duration.
    Type: Application
    Filed: March 24, 2008
    Publication date: April 1, 2010
    Inventors: Atsushi Matsuo, Koji Fukami, Toshihide Noguchi, Kazuki Hayashida, Teppei Fujitsuka, Yuji Yatomi