Patents by Inventor Takuji Yanagibashi

Takuji Yanagibashi 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).

  • Patent number: 9458736
    Abstract: According to the present invention, a wind turbine generator system is provided which can not only remove the influence of salt damage in case the system is established off-shore, but even if the facility becomes larger, which can also cool equipment and the generator provided in the tower and can reduce the possibility of decreasing power generation efficiency.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: October 4, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Takuji Yanagibashi, Takashi Matsunobu, Tsutomu Hasegawa, Kiyoshi Sakamoto, Kenichi Azegami
  • Patent number: 9231441
    Abstract: A wind turbine able to generate power irrespective of a presence of and a state of a power grid is disclosed. Specifically, a wind power generation system is provided with a wind turbine, the wind turbine including a blade that rotates in response to the wind, a generator that rotates with rotation of the blade to generate power, and an auxiliary machine that controls a pitch angle of the blade. The auxiliary machine is driven by the generated power of a downwind type wind turbine to which a permanent magnet type generator is mounted and which generates power in a state in which a blade of the downwind type wind turbine rotating in response to the wind faces downwind.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: January 5, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Kenichi Azegami, Kiyoshi Sakamoto, Takuji Yanagibashi, Takashi Matsunobu
  • Patent number: 9203334
    Abstract: This invention is intended to provide a wind power generator system or method for controlling a wind power generator system, designed to implement switching-initiated smooth energy changeover without leading to a complex system configuration. The method of controlling a wind power generator system according to an aspect of the invention, wherein the generator system includes a wind turbine that uses wind to generate electric power and a control device that controls the wind turbine, is a control method designed so that when the wind turbine is generating power, the turbine drives the control device by use of the turbine-generated power, irrespective of an electric power system state.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: December 1, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Kiyoshi Sakamoto, Takuji Yanagibashi, Tsutomu Hasegawa, Masaya Ichinose, Takashi Matsunobu, Kenichi Azegami, Noriyuki Uchiyama
  • Publication number: 20140103656
    Abstract: A wind turbine able to generate power irrespective of a presence of and a state of a power grid is disclosed. Specifically, a wind power generation system is provided with a wind turbine, the wind turbine including a blade that rotates in response to the wind, a generator that rotates with rotation of the blade to generate power, and an auxiliary machine that controls a pitch angle of the blade. The auxiliary machine is driven by the generated power of a downwind type wind turbine to which a permanent magnet type generator is mounted and which generates power in a state in which a blade of the downwind type wind turbine rotating in response to the wind faces downwind.
    Type: Application
    Filed: April 25, 2011
    Publication date: April 17, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Kenichi Azegami, Kiyoshi Sakamoto, Takuji Yanagibashi, Takashi Matsunobu
  • Publication number: 20130309093
    Abstract: According to the present invention, a wind turbine generator system is provided which can not only remove the influence of salt damage in case the system is established off-shore, but even if the facility becomes larger, which can also cool equipment and the generator provided in the tower and can reduce the possibility of decreasing power generation efficiency.
    Type: Application
    Filed: February 4, 2011
    Publication date: November 21, 2013
    Applicant: Hitachi, Ltd.
    Inventors: Takuji Yanagibashi, Takashi Matsunobu, Tsutomu Hasegawa, Kiyoshi Sakamoto, Kenichi Azegami
  • Publication number: 20130113212
    Abstract: This invention is intended to provide a wind power generator system or method for controlling a wind power generator system, designed to implement switching-initiated smooth energy changeover without leading to a complex system configuration. The method of controlling a wind power generator system according to an aspect of the invention, wherein the generator system includes a wind turbine that uses wind to generate electric power and a control device that controls the wind turbine, is a control method designed so that when the wind turbine is generating power, the turbine drives the control device by use of the turbine-generated power, irrespective of an electric power system state.
    Type: Application
    Filed: June 30, 2010
    Publication date: May 9, 2013
    Applicant: Hitachi, Ltd.
    Inventors: Kiyoshi Sakamoto, Takuji Yanagibashi, Tsutomu Hasegawa, Masaya Ichinose, Takashi Matsunobu, Kenichi Azegami, Noriyuki Uchiyama