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Pat. 10355617 United States, Int. Cl.22 H02M 1/00, H02M 1/08, H02M 7/483, H02M 7/487, H02M 7/5395, H02P 27/08. Medium voltage transformerless multilevel converter and method for controlling a medium voltage transformerless multilevel converter : Appl. N 15/758495 : Filed 13.11.2015 : Pub. 16.07.2019 : / Liviu Mihalache ; Assignee Siemens Ag ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10355617/en?oq=US10355617.html (дата обращения: ДД.ММ.ГГГГ).