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Pat. 10998813 United States, Int. Cl.22 H02M 1/32, H02H 7/125, H02M 1/36, H02M 7/483, H02M 7/49, H02M 7/493, H02M 7/5387, H02M 7/48. Modular multi-level converter and DC failure blocking method therefor : Appl. N 16/067543 : Filed 23.06.2016 : Pub. 04.05.2021 : / Hee Jin Kim, Dong Su Lee, Kyeon Hur, Jae Sik Kang, Sang Min Kim, Jong Seo Na ; Assignee Hyosung Heavy Industries Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10998813/en?oq=US10998813.html (дата обращения: ДД.ММ.ГГГГ).