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Pat. 9887629 United States, Int. Cl.22 H02M 3/335, H02M 1/14, H02M 3/155, H02M 1/34. Pulsating current ripple cancelling circuit and power converting system using the same : Appl. N 14/679116 : Filed 06.04.2015 : Pub. 06.02.2018 : / Ching-Tsai Pan, Ming-Chieh Cheng ; Assignee National Tsing Hua University Nthu ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9887629/en?oq=US9887629.html (дата обращения: ДД.ММ.ГГГГ).