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Pat. 11424693 United States, Int. Cl.22 H02M 7/483, H02M 7/487, H02P 27/08, H02P 27/14, H02M 5/458, H02M 7/5395. Three-level power conversion device, three-level power conversion device control method, and storage medium : Appl. N 17/050306 : Filed 27.04.2018 : Pub. 23.08.2022 : / Makoto Hayashi ; Assignee Toshiba Mitsubishi Electric Industrial Systems Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11424693/en?oq=US11424693.html (дата обращения: ДД.ММ.ГГГГ).