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Pat. 10411478 United States, Int. Cl.22 H02J 3/38, H02J 7/00, H02J 9/06, H02M 1/32, H02M 1/36, H02M 3/04, H02M 7/537, H02M 7/5387, H02J 3/40. Grid connection power conversion device and disconnection/welding detection method therefor : Appl. N 15/401510 : Filed 09.01.2017 : Pub. 10.09.2019 : / Chienru Lung, Hideki Hidaka ; Assignee Tabuchi Electric Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10411478/en?oq=US10411478.html (дата обращения: ДД.ММ.ГГГГ).