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Pat. 9897074 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. Wind turbine system including parallel converters for active current production within over-current margins : Appl. N 14/593804 : Filed 09.01.2015 : Pub. 20.02.2018 : / Thomas Hjort ; Assignee Vestas Wind Systems As ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9897074/en?oq=US9897074.html (дата обращения: ДД.ММ.ГГГГ).