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Pat. 10084387 United States, Int. Cl.22 H02J 3/36, H02M 5/458. LCC and MMC series-connected HVDC system with DC fault ride-through capability : Appl. N 15/522954 : Filed 11.04.2016 : Pub. 25.09.2018 : / Zheng Xu, Shijia Wang, Huangqing Xiao ; Assignee Zhejiang University Zju ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10084387/en?oq=US10084387.html (дата обращения: ДД.ММ.ГГГГ).