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Pat. 11121641 United States, Int. Cl.22 H02M 7/483, H02M 1/00. High-power machine drive system based on modular multilevel converter : Appl. N 17/265474 : Filed 02.01.2020 : Pub. 14.09.2021 : / Fujin Deng, Pengyuan Jiang, Yihua Hu ; Assignee Southeast University ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11121641/en?oq=US11121641.html (дата обращения: ДД.ММ.ГГГГ).