Библиографическая ссылка на патент
Pat. 9991819 United States, Int. Cl.22 H02J 3/38, H02M 1/42, H02M 7/537. Power conversion system and method for detecting isolated operation of the same : Appl. N 14/519791 : Filed 21.10.2014 : Pub. 05.06.2018 : / Tomoyuki Hatakeyama, Akira Kikuchi, Fumikazu Takahashi, Kimiaki Taniguchi, Hirofumi Oyamada ; Assignee Hitachi Information and Telecommunication Engineering Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9991819/en?oq=US9991819.html (дата обращения: ДД.ММ.ГГГГ).