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Pat. 10917023 United States, Int. Cl.22 H02M 7/757, H02J 7/00, H02J 9/06, H02M 1/00, H02M 7/162, H02M 7/219. Power conversion system and method for pre charging DC-Bus capacitors therein : Appl. N 16/423147 : Filed 27.05.2019 : Pub. 09.02.2021 : / Xin Chen, Weiqiang Zhang, Shiqiang Hao, Hongyao Liu ; Assignee Delta Electronics Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10917023/en?oq=US10917023.html (дата обращения: ДД.ММ.ГГГГ).