Characterization and Design of Interleaved Buck-Boost Converter

This paper presents the design and characterization of non-inverting interleaved buck-boost converter. One way to enhance the efficiency is by connecting the converters in parallel therefore all the inductors experience the same input current, resulting efficiency and reliability of the interleaved buck-boost converter is improved. This technique is known as interleaving. Since the converters used in alternate energy system required high efficiency and low input / output current ripple, therefore interleaved buck-boost converter is presented for the analysis. For further improving the inner dynamics of the converter a damping network is also used. Simulation of steady state DC-DC interleaved buck-boost converter is performed using Matlab/Simulink software. The simulation results are presented to verify the theoretical results and the advantages of the proposed converter which includes low voltage oscillation and non-pulsating input / output currents have been verified.