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Pat. 10847991 United States, Int. Cl.22 H02J 7/00, H02J 7/02, H02J 7/34, H02M 1/42, H02M 3/158, H02M 7/12, H02M 7/48, H02M 1/00. Multiple bidirectional converters for charging and discharging of energy storage units : Appl. N 16/411635 : Filed 14.05.2019 : Pub. 24.11.2020 : / Wentao He, Kui Zhou, Haoren Shan ; Assignee Huawei Technologies Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10847991/en?oq=US10847991.html (дата обращения: ДД.ММ.ГГГГ).