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Pat. 10749439 United States, Int. Cl.22 H02M 3/335, H02M 1/08, H02M 1/32, H02M 1/00. Systems and methods for two-level protection of power conversion systems : Appl. N 16/359918 : Filed 20.03.2019 : Pub. 18.08.2020 : / Xiaomin Huang, Huawei Lv, Chao Yao, Qiang Luo, Lieyi Fang ; Assignee On Bright Electronics Shanghai Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10749439/en?oq=US10749439.html (дата обращения: ДД.ММ.ГГГГ).