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Pat. 9923483 United States, Int. Cl.22 H02M 7/48, H02J 3/38, H02M 1/12, H02M 5/458, H02M 7/487. Method for operating an inverter and inverter comprising a switch between a center point of a DC link and a connection for a neutral conductor of an AC grid : Appl. N 15/163329 : Filed 24.05.2016 : Pub. 20.03.2018 : / Sven Bremicker ; Assignee Sma Solar Technology Ag ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9923483/en?oq=US9923483.html (дата обращения: ДД.ММ.ГГГГ).