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:
Jun. 05, 2012
Filed:
Sep. 28, 2009
Ok-bae Hyun, Daejeon, KR;
Seong-woo Yim, Daejeon, KR;
Hye-rim Kim, Daejeon, KR;
Korea Electric Power Corporation, Gangnamgu, KR;
Abstract
A line commutation type fault current limiter which can reduce manufacturing and maintenance costs, carry out line commutation by operating a cutoff switch by fault current energy, respond rapidly to a fault, be immediately restored to an original state, and perform either an active or a passive operation. The line commutation type fault current limiter includes a coupled inductor having a primary side connected to a main circuit and a secondary side matched with the primary side, a Zener diode switch electrically connected to the secondary side of the coupled inductor, a line commutation switch connected to the Zener diode switch as well as the primary side of the coupled inductor to form a bypass path in parallel with the primary side of the coupled inductor and to cut off the main circuit, when the Zener diode switch is turned on, and a current limiting unit electrically connected in parallel with the line commutation switch to limit a current flowing into the main circuit.