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. 02, 2020
Filed:
Dec. 05, 2017
Hyosung Heavy Industries Corporation, Seoul, KR;
Hee Jin Kim, Seoul, KR;
Kyeon Hur, Seoul, KR;
Hee Jin Kim, Seoul, KR;
Kyeon Hur, Seoul, KR;
Dong Su Lee, Anyang-si, KR;
Jae Sik Kang, Seoul, KR;
Ju Yong Jung, Paju-si, KR;
Sang Min Kim, Seoul, KR;
Jong Seo Na, Seoul, KR;
HYOSUNG HEAVY INDUSTRIES CORPORATION, Seoul, KR;
Other;
Abstract
The present invention relates to an MMC converter system which can quickly cut off fault current by installing a plurality of disconnecting switch units on a line connected between two MMC converter devices. The MMC converter system comprises: a first MMC converter device including a plurality of serially connected sub modules; a second MMC converter device including a plurality of serially connected sub modules; a first disconnecting switch unit installed on a line between the first and second MMC converter devices; and a second disconnecting switch unit connected in series to the first disconnecting switch unit on the line, wherein each of the first and second disconnecting switch units comprises a mechanical switch installed on the line so as to open and close the line and a diode connected in parallel to the mechanical switch, and the two diodes are installed in opposite directions to each other.