A Design and Implementation of a Novel Multi-Stage Ultra High Gain DC-DC Converter with Boost Cell Network

Abstract

This paper introduces a novel multi-stage ultrahigh gain DC-DC converter featuring a minimal component count, including a single semiconductor switch. This converter achieves substantial voltage gain even at lower duty ratios, effectively reducing voltage stress on both the switch and diodes. The proposed converter leverages two distinct boost cell configurations, namely the 2LC2D and C2D designs. The 2LC2D boost cell consists of two inductors, one capacitor, and two diodes, collectively forming an active switched inductor capacitor network (SLCN). On the other hand, the C2D boost cell comprises one capacitor and two diodes. The paper primarily investigates the converter's performance within the context of an n-stage SLCN converter, with a particular focus on the fundamental stage. Its compact design renders it well-suited for various applications, including renewable energy, electric vehicles, and fuel cells. The paper provides a comprehensive explanation of the working principle and steady-state analysis, accompanied by simulation results that substantiate the theoretical findings. This innovative converter demonstrates exceptional performance characteristics and exhibits significant potential across a wide spectrum of applications. © 2023 IEEE.