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Pat. 10454301 United States, Int. Cl.22 H02J 7/00, H02J 3/38, H02J 9/00, H02J 9/06, H02M 5/458. System and method for detecting and correcting DC bus imbalances between parallel coupled UPS systems sharing a common battery : Appl. N 14/605382 : Filed 26.01.2015 : Pub. 22.10.2019 : / Matteo Lo Torto, Graziano Galuppi ; Assignee Vertiv Srl ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10454301/en?oq=US10454301.html (дата обращения: ДД.ММ.ГГГГ).