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Pat. 11146181 United States, Int. Cl.22 H02M 7/483, H02M 7/49, H02S 40/32. Control method and apparatus for common-mode modulated wave of single-phase five-level inverter : Appl. N 16/911600 : Filed 25.06.2020 : Pub. 12.10.2021 : / Fangcheng Liu, Kai Xin, Yunfeng Liu ; Assignee Huawei Technologies Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11146181/en?oq=US11146181.html (дата обращения: ДД.ММ.ГГГГ).