ABSTRACT
Effect of Snubber Circuit for improvement of efficiency in SEPIC Converter presents the use of snubber circuit for the improvement of SEPIC converter. SEPIC converter is a type of dc-dc converter that can be used as step up or step down converter providing better efficiency. Snubber circuit may be active type or passive type i.e. combinations of inductors, capacitors, diodes etc. The different types of snubber circuits are used for the enhancement of converter which reduces the switching losses during the turn-on and turn-off of the power semiconductor device used in SEPIC converter. In this paper the performance of the SEPIC dc–dc converter with snubber circuit is presented to obtain the higher voltage. The resultant converter is obtained by modifying the SEPIC converter with inductor, diode and capacitor. This converter provides better output than ordinary converter by reducing the losses. The simulation is done using MATLAB simulink. The simulation results of input voltage, input current, output voltage and output current in ordinary SEPIC converter and SEPIC converter with snubber circuit are obtained. This converter provides higher voltage at the output side like as in boost converter which can be used with low input voltage.
