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Pat. 11165330 United States, Int. Cl.22 H02M 1/12, H02J 3/36, H02M 7/757. Elimination of commutation failure of LCC HVDC system : Appl. N 16/629389 : Filed 05.07.2018 : Pub. 02.11.2021 : / Xiao-Ping Zhang, Ying Xue ; Assignee University of Birmingham ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11165330/en?oq=US11165330.html (дата обращения: ДД.ММ.ГГГГ).