학술논문
A DC-DC Converter with Zero Low Frequecny Input Current Ripple
Document Type
Conference
Author
Source
2022 IEEE 17th Conference on Industrial Electronics and Applications (ICIEA) Industrial Electronics and Applications (ICIEA), 2022 IEEE 17th Conference on. :640-645 Dec, 2022
Subject
Language
ISSN
2158-2297
Abstract
A zero input current ripple dc-dc converter is proposed which can be applied to two-stage system. A smaller capacitor of the auxiliary circuit that is introduced on the basis of flyback topology is responsible for dealing with the output power pulsation. Dual voltage loops are employed in the control system in order to keep both intermediate dc bus voltage and the voltage across the auxiliary capacitor stable. Indirect current control is adopted without current sampling. The low frequency input current ripple can be eliminated while the function of voltage conversion is achieved. In this paper, the operation principle of the circuit is analyzed in details. Besides, key design considerations and control strategy are also given. Finally, experimental results from a 75W prototype are presented to verify the advantages of the proposed converter.