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Pat. 10523011 United States, Int. Cl.22 H02J 3/38, H02M 7/44. Voltage compensation apparatus for photovoltaic system and photovoltaic system : Appl. N 15/444976 : Filed 28.02.2017 : Pub. 31.12.2019 : / Yanfei Yu, Hua Ni, Zongjun Yang, Shangfang Dai ; Assignee Sungrow Power Supply Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10523011/en?oq=US10523011.html (дата обращения: ДД.ММ.ГГГГ).