High-Performance Voltage-Boost Switched-Coupled-Inductor DC-DC Converters Deduced From Impedance Source Networks

This article proposes a switched-coupled-inductor impedance source network integrating capacitor-winding-diode technology. Next, voltage-boost switched-coupled-inductor dc-dc converters based on the proposed impedance source network are deduced out. The proposed dc-dc converters can obtain higher voltage gain and own common ground. Also, input currents of the proposed converters are continuous, which is beneficial of input power. Compared to conventional impedance source dc-dc converters, the proposed converters can have the higher boost ability and largely reduce the voltage stresses across switches in the same voltage gain. Theoretical analysis including operation principles, voltage gain derivations, stress analysis, parameter design, efficiency analysis, and feature comparisons of the proposed topologies are given. The specific experimental results are shown to verify the aforementioned analysis.