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Pat. 10291109 United States, Int. Cl.22 H02M 1/12, H02M 1/08, H02M 7/21, H02M 7/219, H02M 7/5387, H02M 7/797, H02M 1/00. Critical-mode-based soft-switching techniques for three-phase bi-directional AC/DC converters : Appl. N 15/868486 : Filed 11.01.2018 : Pub. 14.05.2019 : / Zhengrong Huang, Zhengyang Liu, Fred C. Lee, Qiang Li, Furong Xiao ; Assignee Virginia Tech Intellectual Properties Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10291109/en?oq=US10291109.html (дата обращения: ДД.ММ.ГГГГ).