US 12,283,897 B2
Modular multi-level converter
Chul Kyun Lee, Anyang-si (KR)
Assigned to LS ELECTRIC CO., LTD., Anyang-si (KR)
Appl. No. 18/020,563
Filed by LS ELECTRIC CO., LTD., Anyang-si (KR)
PCT Filed Dec. 7, 2021, PCT No. PCT/KR2021/018401
§ 371(c)(1), (2) Date Feb. 9, 2023,
PCT Pub. No. WO2022/131650, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 10-2020-0175217 (KR), filed on Dec. 15, 2020.
Prior Publication US 2023/0318483 A1, Oct. 5, 2023
Int. Cl. H02M 7/48 (2007.01); H02M 3/158 (2006.01); H02M 7/483 (2007.01); H02M 7/49 (2007.01)
CPC H02M 7/4835 (2021.05) [H02M 3/1584 (2013.01); H02M 7/49 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A modular multi-level converter comprising:
a cluster;
wherein the cluster comprises:
a plurality of sub-modules connected in series; and
a plurality of individual reactors connected to the sub-modules in series, and
wherein each of the plurality of individual reactors is disposed between two sub-modules of the plurality of sub-modules,
wherein a first end of a first individual reactor among the plurality of individual reactors is connected in series with one end of a first sub-module among the plurality of sub-modules and connected to one end of a first protection switch of the first sub-module which is implemented as a first By-Pass switch of the first sub-module, and a second end of the first individual reactor is connected in series with one end of a second sub-module among the plurality of sub-modules and connected to a first end of a second protection switch of the second sub-module which is implemented as a second By-Pass switch of the second sub-module, and
wherein a second end of the protection switch of the second sub-module is connected in series with the one end of a second individual reactor among the plurality of individual reactors.