Improved Multi -Input High Step up Dc-Dc Converter using Pi and Fuzzy Logic Controller for Renewable Energy Sources.

Abstract

A Non Isolated Multi Input High Step up DC-DC converter is presented in this paper. This Multi Input DC-DC converter attains high voltage gain and low stress across the switches. This converter can be operated in bi-directional; with simple construction the controlling mechanism and generation of switching signals are easy. Principle of operation and analysis of the converter can be presented in detail. Multi Input High Step up DC-DC converter simulation with the closed loop controllers, PI and FUZZY logic controller are presented for getting stiff voltage regulation under sudden disturbances in load. Low Switching loss improves the converter performance.