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Pat. 9917522 United States, Int. Cl.22 H02M 3/335, H02J 1/10, H02M 1/08, H02M 3/24, H02M 5/42, H02M 7/44, H02M 7/68. Power control apparatus for sub-module of MMC converter : Appl. N 15/538129 : Filed 28.12.2015 : Pub. 13.03.2018 : / June-Sung Kim, Hong-Ju Jung, Jung-Soo Park, Doo-Young Lee, Jong-Yun Choi ; Assignee Hyosung Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9917522/en?oq=US9917522.html (дата обращения: ДД.ММ.ГГГГ).