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Pat. 11289913 United States, Int. Cl.22 H02J 3/36, H02M 7/757. Dynamic stability analysis and control method for voltage sourced converter based high voltage direct current transmission system : Appl. N 16/790747 : Filed 14.02.2020 : Pub. 29.03.2022 : / Baohong Li, Tianqi Liu, Yan Tao, Shunliang Wang ; Assignee Sichuan University ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11289913/en?oq=US11289913.html (дата обращения: ДД.ММ.ГГГГ).