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Pat. 10361640 United States, Int. Cl.22 H02M 7/538, H02J 3/18, H02J 3/38, H02M 7/5387. Cascaded photovoltaic grid-connected inverter, control method and control device for the same : Appl. N 15/581748 : Filed 28.04.2017 : Pub. 23.07.2019 : / Le Yang, Shineng Yu, Jun Xu ; Assignee Sungrow Power Supply Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10361640/en?oq=US10361640.html (дата обращения: ДД.ММ.ГГГГ).