MMC CONVERTER AND SUB-MODULES THEREOF

WIPO Patent Application WO/2018/221907

A1

The present invention relates to an MMC converter which is associated with a high voltage direct current (HVDC) transmission system and sub-modules which constitute the MMC converter. A sub-module according to the present invention comprises: a first power semiconductor switch and a second power semiconductor switch which each include a semiconductor switch and a diode connected in anti-parallel to the semiconductor switch and which are connected in series with each other in the same direction; a capacitor which is connected in parallel to both the first power semiconductor switch and the second power semiconductor switch which are connected in series with each other; a first terminal which is connected to a first node between the first and second power semiconductor switches; a second terminal which is connected to a second node between the second power semiconductor switch and the capacitor; a third power semiconductor switch which includes a semiconductor switch and a diode connected in anti-parallel with the semiconductor switch, one side of the third power semiconductor switch being connected to the second node; and a third terminal which is connected to the other end of the third power semiconductor switch and is connected to a terminal of the AC system.

HONG JUNG WON (KR)
JUNG HONG JU (KR)
OH SUNG MIN (KR)
YOO HYUN HO (KR)
LEE JOO YEON (KR)

PCT/KR2018/006024

December 06, 2018

May 28, 2018

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HYOSUNG HEAVY IND CORP (KR)

H02M7/483; H02J3/36

WO2015124176A1

2015-08-27

US20160268915A1	2016-09-15
CN105897019A	2016-08-24
US20160094117A1	2016-03-31
JP2014018028A	2014-01-30

NAMCHON PATENT AND LAW FIRM (KR)

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