An Improved Non-Isolated DC-DC Converter Involved with High Static Gain

Abstract

Introduced research intends to evolve an improved high voltage gain non isolated dc-dc converter hinged on single-ended primary inductance converter (SEPIC). Extensive converter accommodates switching structure as well as voltage multiplier cell along with the traditional SEPIC to realize contemporary operational aspects of high voltage gain at low input voltage. Proposed structure attains the advantages of elevated static gain with lower input voltage, minor switch voltage, higher effectiveness with lower duty ratio of the switching device and uninterrupted input current with inferior ripples; whichever make it appropriate for renewable energy as well as photovoltaic applications. Besides, studied converter is not endured by the effect of overshoot voltage throughout switches turn-off state as the layout is relieved from transformer and coupled inductors. The gain equation reveals that the improved converter is capable to escalate the line voltage further times compared to the conventional converter. This document illustrates detailed operational phases of the introduced converter. Furthermore, MATLAB/Simulink simulation results are scrutinized to evaluate and confirm the proficiency of the recommended converter.