Abstract

The burning of fossil fuels and the release of carbon dioxide in the atmosphere are causing the Earth to become warmer day by day. A solution for these are the renewable energy sources. Solar panels and fuel-cells generate low voltage, therefore high voltage gain dc-dc converters are needed to boost their low output voltage to meet the inverters required voltage. The Z source converter is a power conversion topology that can buck and boost input voltage using passive components. It has several advantages such as high voltage gain, isolated energy source from the load side, clamped switch voltage and positive output voltage polarity, therefore it is a suitable choice for high step-up applications. This paper presents a non-isolated high step-up dc-dc converter which is the derivation of z-source converter and has a higher voltage gain in comparison to the conventional converters. The open loop and closed loop simulations are also done using MATLAB simuLink.

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