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Pat. 11303220 United States, Int. Cl.22 H02M 7/483, H02M 1/44, H02M 7/5387, H02M 1/00, H02M 3/158, H02M 7/539. Flying capacitor (FC)-type 3-level power conversion device : Appl. N 17/437198 : Filed 30.01.2020 : Pub. 12.04.2022 : / Kazunobu Oi, Kenji Kobori ; Assignee Meidensha Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11303220/en?oq=US11303220.html (дата обращения: ДД.ММ.ГГГГ).