Quadratic Switched Inductor-Capacitor Multi-Port Converter for DC Microgrid Application

Abstract

This article presents a Multi-Port Quadratic Switched Inductor-Capacitor DC-DC converter topology tailored for DC-microgrid applications. A Non-isolated Quadratic Switched Inductor-Capacitor Multi-Port Converter (QSICMPC) is proposed, and designed to integrate hybrid energy sources efficiently to generate the constant load voltage for DC-Microgrid. The cross-connected capacitors with output side inductor in the converter function as voltage doubler circuit, providing an additional voltage boost. Compared to existing converters, the proposed design requires fewer components while achieving a higher voltage gain. Furthermore, it features continuous input current, reduced diode voltage stress, and lower voltage ratings for passive components. The converter offers a wider voltage gain range and reduced voltage stress on power switches. This study highlights its operational modes and detailed steady-state analysis, and comparisons are underscoring the significance of the proposed design. © 2025 IEEE.