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Pat. 11139751 United States, Int. Cl.22 H02M 7/483, H02M 1/00, H02M 1/12. Multiphase multilevel power converter having a drive and a passive frequency filter, and method for driving the multiphase multilevel power converter : Appl. N 17/272403 : Filed 27.08.2018 : Pub. 05.10.2021 : / Martin Pieschel ; Assignee Siemens Energy Global Gmbh and Co Kg ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11139751/en?oq=US11139751.html (дата обращения: ДД.ММ.ГГГГ).