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Pat. 10074988 United States, Int. Cl.22 H01H 47/00, H02J 3/36, H02M 1/32, H02M 5/458, H02M 7/483, G01R 31/02, G01R 31/40, H02M 1/00. Observer based monitoring and control of submodules in modular multilevel converter : Appl. N 15/101134 : Filed 05.12.2014 : Pub. 11.09.2018 : / Colin Oates ; Assignee General Electric Technology Gmbh ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10074988/en?oq=US10074988.html (дата обращения: ДД.ММ.ГГГГ).