Modelling and Simulation of High Step up Dc - Dc Converter for Micro Grid Application

The distributed generation (DG) systems based on the renewable energy sources have rapidly developed in recent years. These DG systems are powered by micro sources such as fuel cells, photovoltaic (PV) systems, and batteries. The micro grid concept consists of two stages, in the first stage the low level voltage from the pv cell is converted to high level voltage by using DC-DC converter. In the second stage the high level DC voltage is converted into AC voltage by using an inverter and is supplied to load. This paper proposes a novel High Step-up DC-DC converter for micro grid application. The proposed converter is modelled and simulated along with pv cell and inverter through MATLAB/SIMULINK for AC load. The proposed converter has high voltage gain and efficiency. The results are successfully verified. Keyword: Coupled inductor, distributed generation (DG) system, high step-up, Multilevel Inverter, Cascaded H Bridge multilevel inverter.