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:
Oct. 06, 2008
Filed:
Oct. 31, 2006
Akihiko Iwata, Tokyo, JP;
Akihiro Suzuki, Tokyo, JP;
Hiroyuki Sasao, Tokyo, JP;
Kenichi Koyama, Tokyo, JP;
Toshiyuki Kikunaga, Tokyo, JP;
Mitsugu Takahashi, Tokyo, JP;
Akihiko Iwata, Tokyo, JP;
Akihiro Suzuki, Tokyo, JP;
Hiroyuki Sasao, Tokyo, JP;
Kenichi Koyama, Tokyo, JP;
Toshiyuki Kikunaga, Tokyo, JP;
Mitsugu Takahashi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
Voltage compensating circuits are connected serially to a power system, including capacitors each having different charging voltages (in relationship of approximately 2(K=0, 1, 2, . . . ) times the smallest charging voltage value). The voltage compensating circuits convert DC voltages in the capacitors into AC voltages and output the AC voltages, respectively. The voltages of the capacitors are detected as detected values Vto VThe detected values Vto Vare used as bit signals for a reference value to check a voltage dip amount of the power system with the reference value and to convert the voltage dip amount into a binary signal. A combination is selected from the voltage compensating circuits in accordance with the binary signal so that the sum of output voltages of the selected voltage compensating circuits compensates the voltage dip of the power system.