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Pat. 11489456 United States, Int. Cl.22 H02M 7/487, H02M 3/07, H02M 7/483, H02M 7/49. Hybrid multilevel inverters with reduced voltage stress : Appl. N 17/157155 : Filed 25.01.2021 : Pub. 01.11.2022 : / Dianbo Fu, Zhaohui Wang, Lei Shi ; Assignee Huawei Digital Power Technologies Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11489456/en?oq=US11489456.html (дата обращения: ДД.ММ.ГГГГ).