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Pat. 10199822 United States, Int. Cl.22 H02J 1/14, G05B 15/02, H02M 7/483, H02M 1/00. Voltage balance control device and voltage balance control method for flying-capacitor multilevel converter : Appl. N 15/465100 : Filed 21.03.2017 : Pub. 05.02.2019 : / Guoqiao Shen, Guojin Xu, Jinfa Zhang ; Assignee Delta Electronics Shanghai Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10199822/en?oq=US10199822.html (дата обращения: ДД.ММ.ГГГГ).