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. 18, 2005
Filed:
Mar. 29, 2002
Akihiko Iwata, Tokyo, JP;
Akihiro Suzuki, Tokyo, JP;
Hiroyuki Sasao, Tokyo, JP;
Kenichi Koyama, Tokyo, JP;
Toshiyuki Kikunaga, Tokyo, JP;
Mitsugu Takahasi, Tokyo, JP;
Akihiko Iwata, Tokyo, JP;
Akihiro Suzuki, Tokyo, JP;
Hiroyuki Sasao, Tokyo, JP;
Kenichi Koyama, Tokyo, JP;
Toshiyuki Kikunaga, Tokyo, JP;
Mitsugu Takahasi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
Voltage compensation circuits connect DC voltages accumulated in capacitors having respectively different charging voltageswhich are 2(where K=0, 1, 2, . . . ) times the minimum voltage into AC voltages. The voltage compensation circuits are connected in series to an electric power system in series. When the voltage dip occurs in an electric power system, a combination of voltage compensation circuits is selected from the voltage compensation circuits. The sum of the output voltage compensates the voltage dip. During normal operation, a high speed mechanical short circuit switch by-passes the voltage compensation circuits to reduce power loss.