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Pat. 11418130 United States, Int. Cl.22 H02M 7/48, H02M 1/14, H02P 6/28, H02M 1/00. System and method for variable DC bus voltage coupled to inverters : Appl. N 16/653016 : Filed 15.10.2019 : Pub. 16.08.2022 : / Dan Li, Long Wu, Guangqi Zhu ; Assignee Deere and Co ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11418130/en?oq=US11418130.html (дата обращения: ДД.ММ.ГГГГ).