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Pat. 10938320 United States, Int. Cl.22 H02M 7/49, H02M 1/00, H02M 7/48, H02M 7/483. Method for minimizing DC capacitance for cascade multilevel converter : Appl. N 16/901170 : Filed 15.06.2020 : Pub. 02.03.2021 : / Xiaoqiang Guo, Lichong Wang, Hao Ding, Chaozhe Wang, Zhigang Lu, Baocheng Wang ; Assignee Shenk Electric Inc, Yanshan University ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10938320/en?oq=US10938320.html (дата обращения: ДД.ММ.ГГГГ).