Patents by Inventor Sigetada Gotou

Sigetada Gotou 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).

  • Power controlling apparatus with power converting circuit
    Patent number: 7075271
    Abstract: The invention provides an apparatus for bi-directional power conversion between a DC circuit and an AC circuit, which inexpensively and simply suppresses generation losses of elements and reduces heat generation, wherein a voltage obtained by dividing the U-phase voltage Vu is compared with a voltage obtained by dividing the voltage vpn of a DC circuit by a comparator CP1, and the MOSFET UFETh is turned on at the output timing thereof, and a voltage obtained by dividing the V-phase voltage Vv is compared with a voltage obtained by dividing the voltage Vpn of a DC circuit by a comparator CP2, and the MOSFET UFETh is turned off at the output timing thereof.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: July 11, 2006
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takahiro Urakabe, Tatsuya Okuda, Takamasa Asai, Sigetada Gotou
  • Power controlling apparatus
    Publication number: 20050105308
    Abstract: The invention provides an apparatus for bi-directional power conversion between a DC circuit and an AC circuit, which inexpensively and simply suppresses generation losses of elements and reduces heat generation, wherein a voltage obtained by dividing the U-phase voltage Vu is compared with a voltage obtained by dividing the voltage vpn of a DC circuit by a comparator CP1, and the MOSFET UFETh is turned on at the output timing thereof, and a voltage obtained by dividing the V-phase voltage Vv is compared with a voltage obtained by dividing the voltage Vpn of a DC circuit by a comparator CP2, and the MOSFET UFETh is turned off at the output timing thereof.
    Type: Application
    Filed: September 27, 2004
    Publication date: May 19, 2005
    Inventors: Takahiro Urakabe, Tatsuya Okuda, Takamasa Asai, Sigetada Gotou