Design and analysis of an improved high gain non isolated interleaved boost converter for solar photovoltaic applications [articol]

Abstract

In this paper, a novel non isolated four phase interleaved boost converter (IBC) with high voltage gain and reduced stress has been derived. This converter topology is intended to achieve a high step up gain without applying high duty cycle, utilizing input parallel and output series configuration. With less number of components, switching loss and conduction loss are also much reduced. Uniform current sharing without adding complex control methods reduces input ripple current. Due to reduced current ripple at input side and optimal number of phases, this converter is suitable for photovoltaic interface. The design equations has been derived and analyzed for the proposed converter. The theoretical analysis and simulation results validate the performance of the converter.