The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 1998
Filed:
Aug. 03, 1995
Masamori Nobayashi, Osaka, JP;
Koji Yamaji, Kagawa, JP;
Kazuo Kato, Tokyo, JP;
Naohiro Toki, Hyogo, JP;
Shinzo Tamai, Hyogo, JP;
Toshiyuki Fujii, Hyogo, JP;
Hatsuhiko Naitoh, Hyogo, JP;
The Kansai Electric Power Co., Inc., Osaka, JP;
Shikoku Electric Power Company, Incorporated, Kagawa-ken, JP;
Electric Power Development Co., Ltd., Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
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.