Performance of Positive Buck-Boost Converter with Mode Select Circuit and Feed-Forward Techniques Using Fuzzy Logic Controller

Abstract

This project is a highly efficient & novel control strategy for improving the transient in the output voltage of a dc-dc positive buck-boost converter which is required for low portable devices. The portable devices development of semiconductor manufacturing technology, conversion efficiency, power consumption, and the size of devices have become the most important design criteria of switching power converters. For portable applications better conveniences extension of battery life and improves the conversion efficiency of power converters .It is essential to develop accurate switching power converters, which can reduce more wasted power energy. The proposed topology can achieve faster transient responses when the supply voltages are changed for the converter by making use of the feed forward network .With mode select circuit the conduction & switching losses are reduced the positive buck–boost converter operate in buck, buck–boost, or boost converter. By adding feed-forward techniques, the proposed converter can improve transient response when the supply voltages are changed. Hence Positive buck-boost converters with mode select circuit &feed forward techniques using fuzzy logic converter is designed And the modeling & experimental results were verified in MATLAB/ Simulink
DOI: 10.17762/ijritcc2321-8169.150265