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Pat. 11223205 United States, Int. Cl.22 H02M 7/493, H02J 3/38, H02M 1/08, H02M 7/48. Method for synchronizing PWM control signals of inverters, inverter, and power grid system : Appl. N 16/833969 : Filed 30.03.2020 : Pub. 11.01.2022 : / Hongwen Yuan, Fuqiang Xu, Fangcheng Liu ; Assignee Huawei Technologies Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11223205/en?oq=US11223205.html (дата обращения: ДД.ММ.ГГГГ).