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Pat. 10193434 United States, Int. Cl.22 H02M 1/12, G05F 1/67, H02M 7/49, H02M 7/537, H02J 3/38, H02M 1/00, H02M 3/158. Power conversion device and three-phase AC power supply device : Appl. N 15/319715 : Filed 10.03.2015 : Pub. 29.01.2019 : / Toshiaki Okumura, Naoki Ayai ; Assignee Sumitomo Electric Industries Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10193434/en?oq=US10193434.html (дата обращения: ДД.ММ.ГГГГ).