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Pat. 10461630 United States, Int. Cl.22 H02M 1/32, H02J 3/36, H02M 3/142, H02M 7/49. Redundancy control method of MMC for HVDC : Appl. N 16/067466 : Filed 22.06.2016 : Pub. 29.10.2019 : / Jung Won Hong, Yong Hee Park, June Sung Kim ; Assignee Hyosung Heavy Industries Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10461630/en?oq=US10461630.html (дата обращения: ДД.ММ.ГГГГ).