Interleaved, Switched Inductor and High-Gain Wide Bandgap Based Boost Converter Proposal

Abstract

Many applications (electric vehicles, renewable energies, low-voltage DC grids) require simple, high-power density and low-current ripple-boost converters. Traditional step-up converters are limited when large transformation ratios are involved. In this work is proposed a step-up converter that brings together the characteristics of high gain, low ripple, and high-power density. From the converter proposal, a mathematical analysis of its operation is first performed, including its static transfer function, stress of components, and voltage and current ripples. Furthermore, it provides a design example for an application of Vin = 48 V to Vo = 270 V and 500 W. For its implementation, two different wide bandgap (WBG) semiconductor models have been used, hybrid GaN cascodes and SiC MOSFETs. Finally, the experimental results of the produced prototypes are shown, and the results are discussed.

Ultimate Transformerless Boost DC-DC Converter for Renewable Energy Applications

“…Considering inductor charge-balance and capacitor charge balance the relation between output and input voltage can be obtained from eq (1) and eq (2) [18].…”

“…Nowadays, dc/dc converters are existing in most of the industrial applications [1]- [2]. In case of applications such as photovoltaic (PV) energy systems, a step-up dc/dc boost converter is mandatory to boost low voltage to high voltage to enable grid integration or supply power to an islanded load.…”

Dynamics and Model Predictive Control of Current-Fed Dickson Voltage Multiplier: TS Fuzzy Approach

“…To address these limitations, different techniques and structures were proposed in the literature [2], such as switched-inductor (SI) [5], switched-capacitor (SC) cells, switched-capacitor-inductor (SCI) networks [3], coupled inductors [6], and non-coupled inductors [7], including the cascaded converters and voltage multipliers (VM) [8].…”