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Pat. 10790761 United States, Int. Cl.22 H02M 1/36, H02M 5/458, H02M 7/155, H02M 7/5387, H02H 7/26, H02M 7/483. Power conversion device and DC power transmission system : Appl. N 16/479252 : Filed 27.02.2017 : Pub. 29.09.2020 : / Takuya Kajiyama, Takeshi Kikuchi, Kaho Mukunoki, Osamu Mori, Toshiyuki Fujii ; Assignee Mitsubishi Electric Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10790761/en?oq=US10790761.html (дата обращения: ДД.ММ.ГГГГ).