DETERMINATION THE EFFECTS OF DUTY CYCLE AND SWITCHING FREQUENCY ON EFFICIENCY OF BOOST CONVERTER FOR FIXED LOAD APPLICATIONS

Abstract

Recent years, power converters have been a significant part of dailyapplications such as PV systems, wind turbines, electrical vehicle chargers andadapters. Due to the arising energy demand and the energy restrictions of theenvironment, energy efficiency of power converters become crucial. Energyefficiency of these converters can be enhanced using appropriate convertertopology, effective modeling and control algorithms. Therefore, in this study,we aim to model and analyze the power losses of boost converter to determinebest usage interval in terms of duty cycle and switching frequency. Theproposed model is designed by using Simulink and the results in terms ofefficiency and power losses are obtained and analyzed in MATLAB. The results ofthis study demonstrate that, appropriate selection of duty cycle and switchingfrequency provide lower power losses and thus higher efficiencies.