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Pat. 11515777 United States, Int. Cl.22 H02M 1/00, H02M 3/158. Cascaded conversion system and voltage equalizing control method thereof : Appl. N 17/465434 : Filed 02.09.2021 : Pub. 29.11.2022 : / Xin Wang, Dehai Lou, Lifeng Qiao, Teng Liu, Weibo Qin ; Assignee Delta Electronics Shanghai Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11515777/en?oq=US11515777.html (дата обращения: ДД.ММ.ГГГГ).