Modeling, simulation and development of isolated Cuk AC-DC converter in DCM and CCM operation

Abstract

This paper presents modeling, simulation and development of high frequency isolation based single-phase buck-boost AC-DC Cuk converter, which consists of only one switch, resulting in simplicity in design and manufacturing, and reduction in input current total harmonic distortion (THD). Design and analysis are carried out for a 13.5 V output voltage and 20.25 W output power. To validate the design of the converter at the primary stage, the simulation is performed in discontinuous conduction mode (DCM) and continuous conduction mode (CCM) of operation, using PSJM 6.0 platform, which shows high-level steady state and dynamic performance. A laboratory prototype of the proposed single switch Cuk buck-boost converter in DCM operation is developed and test results are presented to validate the proposed design and developed model of the system.