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Pat. 11081972 United States, Int. Cl.22 H02M 7/483, H02M 1/44. Potential equalization system for a modular multilevel converter : Appl. N 17/254471 : Filed 19.06.2018 : Pub. 03.08.2021 : / Mathias Anheuer, Daniel Boehme, Johannes Dallmeier, Christopher Eismann, Johann Holweg, Martin Kapelke, Michael Rudek, Torsten Stoltze, Marcus Wahle, Felix Daeumler, Johannes Griessl, Adrian Huber, Christian Schrammel, Johannes Weber ; Assignee Siemens Energy Global Gmbh and Co Kg ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11081972/en?oq=US11081972.html (дата обращения: ДД.ММ.ГГГГ).