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:
Sep. 30, 1997
Filed:
Aug. 03, 1995
Tsutomu Fukui, Yamatokouriyama, JP;
Tokihide Niu, Toyono-gun, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-fu, JP;
Abstract
A static reactive power compensating equipment includes a circuit for preventing harmonic currents generated by adjusting lag compensation current from phase control from flowing out of the equipment. A first reactor and a controller are connected to a switching circuit. A second reactor is connected between an output terminal and a connection node. The first reactor is also connected to the connection node such that the first and second reactors are series connected. A resonant circuit including a third reactor connected in series with a capacitor is connected to the connection node such that the resonant circuit is series connected with the second reactor and parallel connected to the first reactor. The resonant circuit is constructed to resonate at a predetermined frequency which substantially absorbs harmonic currents flowing from the static reactive power compensating equipment.