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Pat. 11482942 United States, Int. Cl.22 H02P 6/06, B66B 1/00, B66B 1/30, H02M 5/00, H02M 5/40, H02M 5/458, H02M 7/00, H02M 7/04, H02M 7/68, H02P 27/06, H02P 27/08. Single phase operation of three phase regenerative drives : Appl. N 15/799387 : Filed 31.10.2017 : Pub. 25.10.2022 : / Ismail Agirman ; Assignee Otis Elevator Co ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11482942/en?oq=US11482942.html (дата обращения: ДД.ММ.ГГГГ).