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Pat. 10734804 United States, Int. Cl.22 H02H 7/26, H02H 3/08, H02H 7/12, H02J 1/00, H02M 1/08, H02M 1/32, H02M 7/217, H02M 7/483. Power conversion device and DC power transmission system : Appl. N 15/736147 : Filed 23.06.2015 : Pub. 04.08.2020 : / Takuo Aramaki ; Assignee Mitsubishi Electric Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10734804/en?oq=US10734804.html (дата обращения: ДД.ММ.ГГГГ).