An interleaved high step‐up DC‐DC converter with double boost paths

Abstract

This paper proposed a novel high step-up converter with double boost paths. The circuit uses two switches and one double-path voltage multiplier cell to own the double boost and interleaved effects simultaneously. The voltage gain ratio of the proposed DC-DC converter can be three times the ratio of the conventional boost converter such that the voltage stress of the switch can be lower. The high step-up performance is in accordance with only one double-path voltage multiplier cell. Therefore, the number of diodes and capacitors in the proposed converter can be reduced. Furthermore, the interleaved property of the proposed circuit can reduce the losses in the rectifier diode and capacitor. The prototype circuit with 24-V input voltage, 250-V output voltage, and 150-W output power is experimentally realized to verify the validity and effectiveness of the proposed converter. Figure 4. Operational modes of the proposed converter: (a) stage 1; (b) stage 2; (c) stage 3; and (d) stage 4.Figure 5. Operational waveforms of the proposed converter: (a) waveforms of the voltages across the switches and rectifiers; (b) waveforms of the currents; and (c) waveforms of the voltages across the inductors.

A new topology for nonisolated multiport zero voltage switching dc‐dc converter

“…A multi-input/multi-output converter based on switched-capacitor cells is introduced in Babaei and Abbasi 4 for PV or fuel cell applications. The presented converters in previous studies [19][20][21][22] are kind of 2-port converters. In previous studies, 5-8 some isolated dc-dc converters with soft switching capabilities that are suitable for electric vehicle applications are presented.…”

A Low-Cost High-Performance Interleaved Inductor-Coupled Boost Converter for Fuel Cells

“…To demonstrate the performance superiority of this work, Table 3 gives a comparison on the voltage gain, voltage/current ratings of power switches, voltage rating of diodes, and the numbers of the required inductors, capacitors, and diodes in this proposal and other representative pieces of work [4,17,19,[22][23][24][25].…”

“…As a result, switches with higher voltage and current rating were needed. As for [25], it operated two sets of capacitor voltage doublers, adopting interleaved control. By doing so, not only was the voltage gain of the converter increased, but the input current ripple and the voltage rating were reduced.…”

Expandable interleaved high voltage gain boost DC‐DC converter with low switching stress

“…[1][2][3][4][5][6][7] In conventional, step-up boost converters duty ratios have to be chosen near to unity to achieve higher voltage conversion ratios. Also, they can be utilized in hybrid systems, battery power supplies, and uninterruptible power supplies (UPS) applications.…”