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Pat. 11133752 United States, Int. Cl.22 H02M 7/48, H02J 3/36, H02M 1/00, H02M 7/483. Modular multilevel converter with multi-port DC power flow control and control method thereof : Appl. N 17/197071 : Filed 10.03.2021 : Pub. 28.09.2021 : / Jianwen Zhang, Weixin Fang, Jianqiao Zhou, Gang Shi, Han Wang, Xu Cai ; Assignee Shanghai Jiaotong University ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11133752/en?oq=US11133752.html (дата обращения: ДД.ММ.ГГГГ).