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Pat. 10951149 United States, Int. Cl.22 H02P 21/22, F04B 49/06, H02M 7/5387, H02P 23/00, H02P 27/08. Method and apparatus for pulse-width modulation of a variable-frequency drive : Appl. N 14/900033 : Filed 27.06.2014 : Pub. 16.03.2021 : / Yilun Chen, Xiaomeng Cheng ; Assignee Eaton Intelligent Power Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10951149/en?oq=US10951149.html (дата обращения: ДД.ММ.ГГГГ).