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Pat. 10903759 United States, Int. Cl.22 G01R 19/165, H02H 7/122, H02M 1/32, H02M 7/5387, H02M 1/00, H02M 5/458. Power conversion device and power conversion device system : Appl. N 16/323683 : Filed 26.12.2016 : Pub. 26.01.2021 : / Yusuke Arao, Kazushige Hotta ; Assignee Hitachi Industrial Equipment Systems Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10903759/en?oq=US10903759.html (дата обращения: ДД.ММ.ГГГГ).