Analysis and Comparison of DC-DC Boost Converter and Interleaved DC-DC Boost Converter

Abstract

The recent development of battery powered applications are improving the need of efficient step up dc-dc converters. Nowadays, step up conversion is widely used in many applications like Electric vehicles, Photovoltaic (PV) system, Uninterruptble power supplies (UPS) and fuel cell system. By paralleling the converters, the input current can be shared among inductors so that high reliability and efficiency in power electronic systems can be obtained. In this paper, the conventional boost dc-dc converter and interleaved boost dc-dc converter are simulated using MATLAB/SIMULINK and MULTISIM software. The converters are tested by varying the input voltage with constant duty cycle in Continuous Conduction Mode (CCM). The performance parameters of the converters are compared. The converters are controlled by interleaved switching signals, which have same switching frequency but shifted in phase. Using interleaved converter we can get improved efficiency, reduced ripple voltage, reduced inductor current ripple, fast switching speed.