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:
Jan. 08, 2019
Filed:
Dec. 30, 2014
Hyosung Heavy Industries Corporation, Seoul, KR;
Byung-Chol Kim, Incheon, KR;
Se-Hee Han, Seoul, KR;
HYOSUNG HEAVY INDUSTRIES CORPORATION, Seoul, KR;
Abstract
The present invention relates to a high-voltage direct current (DC) circuit breaker for cutting off a fault current from flowing through a line during a malfunction in a high-voltage DC line. A DC circuit breaker according to the present invention comprises: a mechanical switch disposed on a DC line; an L/C circuit connected in parallel with the mechanical switch (), and comprising a capacitor and a reactor connected in series to each other to generate LC resonance; a first semiconductor switch, connected in parallel to the L/C circuit, for switching the unidirectional flow of the current; and a second semiconductor switch, connected in parallel to the first semiconductor switch, for switching the uni- and reverse-directional flow of current.