Performance Analysis of Standalone DC Microgrid for Different Converter Topologies

Abstract

Nowadays, meeting the energy demand of DC loads using a sustainable and reliable system is a significant task. Standalone DC Microgrids is one such system commonly used. An appropriate power converter and controller selection are critical for improving the DC Microgrid reliability. The authors discuss the significance of selecting DC-DC converters in a standalone DC Microgrid. The performance of DC Microgrid with parallel interconnected converters with the droop controller and identical cable resistances is carried out considering boost and SEPIC topologies for the converters separately. Comparison between these two topologies is made based on parameters like load sharing between converters, settling time, and the ripple content of DC bus voltage. The study employs MATLAB/Simulink based simulation. The results indicate the superiority of the SEPIC converter over the Boost Converter.