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Pat. 11101742 United States, Int. Cl.22 H02M 7/5387, H02J 3/38, H02J 7/00, H02M 1/08, H02M 3/158, H02M 7/483, H02M 1/00. Buck-chopper and bi-directional chopper for multilevel cascaded H-bridge inverters : Appl. N 16/733422 : Filed 03.01.2020 : Pub. 24.08.2021 : / Sridhar Vavilpalli, Umashankar Subramaniam, Dhafer Jaber Almakhles ; Assignee Prince Sultan University ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11101742/en?oq=US11101742.html (дата обращения: ДД.ММ.ГГГГ).