Patents by Inventor Michiharu Tsukada

Michiharu Tsukada 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 conversion apparatus
    Patent number: 6052297
    Abstract: A power conversion apparatus includes a current component control section which outputs q axis and d axis negative-sequence components and q axis and d axis positive-sequence components based on a detected current value or a voltage value, a current component control which compares a current component with the current instruction value from an instruction value generator and outputs to an adder/subtractor the result, a converter converting a control signal output from the adder/subtractor into three-phase components, and an adder adding these three-phase components to respective phases and outputting the result to a power conversion section.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: April 18, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masahiko Akamatsu, Michiharu Tsukada, Daisuke Itoh, Shinzo Tamai