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Pat. 11418131 United States, Int. Cl.22 H02M 7/483, H02M 7/493, H02M 3/07. Voltage balance control method for flying-capacitor multilevel converter : Appl. N 17/118961 : Filed 11.12.2020 : Pub. 16.08.2022 : / Guoqiao Shen, Guojin Xu, Ning He, Jinfa Zhang ; Assignee Delta Electronics Shanghai Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11418131/en?oq=US11418131.html (дата обращения: ДД.ММ.ГГГГ).