A modified z-source boost dc-dc converter for photovoltaic applications

Abstract

Now a day’s the rate of energy generated by the renewable energy sources are increasing rapidly. More popular source form these sources is the photovoltaic system source, but this photovoltaic system is now also most costly and a research work is going on to reduce the cost and increase efficiency of photovoltaic system. boost dc-dc converter system is developed for to convert dc power in to the dc and also boost dc output. Due to less no of switches, complicity of converter has been reduced. However the conventional boost converter capabilities are limited.Hence ,in this work, we have proposed a new topology based a Z-source configuration to interface the pv system .The boosting capability of conventional boost dc –dc Z-source converter is limited.Hence to overcome the limitations of conventional Z-source boost dc-dc converter, a modified version of Z-source boost dc-dc converter is proposed with stronger voltage boost capabilities. The performance of the proposed converter for photovoltaic application is successfully verified using Matlab Simulation.