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Pat. 9903343 United States, Int. Cl.22 H02P 9/00, F03D 7/02, F03D 9/00, F03D 9/25, H02J 3/38, H02J 3/48, H02M 7/493, H02M 1/32. Active current production within over-current margins of parallel converters : Appl. N 14/593835 : Filed 09.01.2015 : Pub. 27.02.2018 : / Thomas Hjort ; Assignee Vestas Wind Systems As ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9903343/en?oq=US9903343.html (дата обращения: ДД.ММ.ГГГГ).