Patents Assigned to Shikoku Electric Power Company, Incorporated
  • Power converter control apparatus for controlling commutation of switching devices under transient conditions
    Patent number: 5717583
    Abstract: A power converter controlling apparatus outputs voltage signals different in phase from phases of commutation voltages of each switching device by 90 degrees to transform the voltage signals and the commutation voltages in conformity with polar coordinate transformation, and outputs amplitudes of the commutation voltages and the phase differences of the commutation voltages to a reference phase based on the results of the transformation to operate phase-control angles of each switching device on the amplitudes and the phase differences.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: February 10, 1998
    Assignees: The Kansai Electric Power Co., Inc., Shikoku Electric Power Company, Incorporated, Electric Power Development Co., Ltd., Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masamori Nobayashi, Koji Yamaji, Kazuo Kato, Naohiro Toki, Shinzo Tamai, Toshiyuki Fujii, Hatsuhiko Naitoh