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Pat. 10326275 United States, Int. Cl.22 H02J 3/36, H02M 1/32, H02M 7/12, H02M 7/48, H02M 1/00. Method for controlling zero sequence voltage of voltage source converter : Appl. N 16/086317 : Filed 19.04.2017 : Pub. 18.06.2019 : / Ke Wang, Gang Li, Yu Lu, Yunlong Dong, Jiang Lu, Zhaoqing Hu, Tiangui Jiang ; Assignee Nr Electric Co Ltd, Nr Engineering Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10326275/en?oq=US10326275.html (дата обращения: ДД.ММ.ГГГГ).