Inderscience Publishers

Analysis and design of single-phase power factor-corrected AC–DC Cuk converter with high-frequency isolation

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In this paper, an analysis and design of a high-frequency transformer isolated single-phase buck-boost AC–DC Cuk converter is presented for both discontinuous and continuous conduction modes (DCM and CCM) of operation. Both modes of operation are considered for the design of 2.6-kW rating with high-level steady-state and dynamic performance. A comparative analysis of Cuk converter is also presented in both modes of operation of DCM and CCM from point of view of steady-state and dynamic behaviour, power quality, simplicity, control technique, device rating and converter size. It is observed that CCM is most suitable for higher power applications in which it requires a little complex control and sensing the additional variables.

Keywords: power factor correction, AC–DC converter, Cuk converters, CCM, DCM, discontinuous conduction, continuous conduction

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