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Pat. 10033211 United States, Int. Cl.22 H01M 10/44, H01M 10/46, H02J 7/00, H02M 7/483, H02M 1/08. Multilevel converter and method utilizing blocking periods for balancing the voltages of capacitors of the submodules of the multilevel converter : Appl. N 14/911530 : Filed 15.08.2013 : Pub. 24.07.2018 : / Hans-Gunter Eckel ; Assignee Siemens Ag ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10033211/en?oq=US10033211.html (дата обращения: ДД.ММ.ГГГГ).