A Single Phase Integrated Converter with ZVS for High Power Factor Correction (PFC)

This paper proposes a single- phase integrated converter topology with the use of soft-switching characteristics to obtain high power factor correction. The power factor correction for DC-DC converters at front end is important as the increase in usage of electronic devices like laptop, cell phones, Electric vehicles etc., Here the integrated converter is a combination of boost and buck converter. The boost converter is operated in DCM to reduce the harmonics of low current and increase power factor on the input side, while the buck converter is used to reduce the ripple on output side. The ZVS transition is achieved by the intrinsic diodes of active switches by providing a freewheeling action along with increased power factor that satisfies IEC standards over a wide range of load with rated power. Open loop and closed- loop using PI controller simulation are carried out. MATLAB software tool is used to implement the model and carry out simulation studies. Finally, a prototype 60W rated output power is developed and tested with 110V input voltage.