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Pat. 10411474 United States, Int. Cl.22 H02J 7/00, H02J 3/38, H02M 3/158, H02M 5/458, H02M 7/217, H02M 7/537, H02P 7/00, H02P 27/08. Electric power system and control method thereof : Appl. N 15/410207 : Filed 19.01.2017 : Pub. 10.09.2019 : / Changyong Wang, Fei Lu ; Assignee Delta Electronics Shanghai Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10411474/en?oq=US10411474.html (дата обращения: ДД.ММ.ГГГГ).