Journal ArticleDOI
Single-switch high step-up converter based on coupled inductor and switched capacitor techniques with quasi-resonant operation
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TLDR
In this paper, a single-switch high step-up dc-dc converter employing a quasi-resonant operation with high efficiency and low ripple continuous input current characteristics is presented.Abstract:
This study presents a novel single-switch high step-up dc-dc converter employing a quasi-resonant operation with high efficiency and low ripple continuous input current characteristics. In order to achieve a high voltage gain, a combination of coupled inductor and switched capacitor techniques is used in the proposed dc-dc converter. Moreover, utilising a series resonance capacitor with the leakage inductance of the coupled inductor leads to a resonant circuit. Subsequently, by employing a quasi-resonant operation, the switching loss of the proposed dc-dc converter has been reduced significantly. Operational analysis, mathematical derivation, component voltage and current ratings are well demonstrated in this study. Finally, the performance of the proposed circuit is evaluated through a 200 W laboratory prototype with 25 V input voltage and 400 V output voltage. The maximum efficiency achieved at full load is 96.4%.read more
Citations
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Journal ArticleDOI
Step-Up DC–DC Converters: A Comprehensive Review of Voltage-Boosting Techniques, Topologies, and Applications
TL;DR: In this paper, the authors comprehensively review and classify various step-up dc-dc converters based on their characteristics and voltage-boosting techniques, and discuss the advantages and disadvantages of these voltage boosting techniques and associated converters.
Journal ArticleDOI
High-Efficiency High Step-Up DC–DC Converter With Dual Coupled Inductors for Grid-Connected Photovoltaic Systems
TL;DR: In this paper, the authors proposed a non-isolated high step-up dc-dc converter with dual coupled inductors suitable for distributed generation applications, which inherits shared input current with low ripple, which also requires small capacitive filter at its input.
Journal ArticleDOI
Nonisolated High Gain DC–DC Converter for DC Microgrids
M. Lakshmi,S. Hemamalini +1 more
TL;DR: A nonisolated high gain dc–dc converter is proposed without using the voltage multiplier cell and/or hybrid switched-capacitor technique to achieve high voltage gain without using extreme duty ratio.
Journal ArticleDOI
A Novel High Voltage Gain Noncoupled Inductor SEPIC Converter
TL;DR: The proposed SEPIC-based converter has various advantages, such as lower voltage stress on the switches, noninverting output voltage, high efficiency, and high voltage gain, and has a continuous input current which makes it suitable for renewable energy and fuel cell applications.
Journal ArticleDOI
Single-Switch High Step-Up DC–DC Converter With Low and Steady Switch Voltage Stress
TL;DR: The proposed topology not only reduces the voltage stress on the main switch but also maintains it steady for the entire duty cycle range, and the reverse recovery issue of the diodes is alleviated through the leakage inductance of the coupled inductor.
References
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Journal ArticleDOI
Review of Nonisolated High-Step-Up DC/DC Converters in Photovoltaic Grid-Connected Applications
Wuhua Li,Xiangning He +1 more
TL;DR: A general conceptual circuit for high-step-up, low-cost, and high-efficiency dc/dc conversion is proposed to derive the next-generation topologies for the PV grid-connected power system.
Journal ArticleDOI
High step-up converter with coupled-inductor
Rong-Jong Wai,Rou-Yong Duan +1 more
TL;DR: In this article, a high step-up converter with a coupled-inductive switch is investigated, where a passive regenerative snubber is utilized for absorbing the energy of stray inductance so that the switch duty cycle can be operated under a wide range, and the related voltage gain is higher than other coupled inductor-based converters.
Journal ArticleDOI
Survey on non-isolated high-voltage step-up dc–dc topologies based on the boost converter
Fernando Lessa Tofoli,Denis de Castro Pereira,Wesley Josias de Paula,Demercil de Sousa Oliveira Júnior +3 more
TL;DR: A proper comparison is established among the most important non-isolated boost-based dc-dc converters regarding the voltage stress across the semiconductor elements, number of components and static gain.
Journal ArticleDOI
Novel high-efficiency step-up converter
K. C. Tseng,Tsorng-Juu Liang +1 more
TL;DR: In this paper, a high-efficiency high step-up converter with low voltage stress on power switch, power diodes and output capacitors is proposed, which consists of an energy clamp circuit and a voltage boost cell.
Journal ArticleDOI
Step-up switching-mode converter with high voltage gain using a switched-capacitor circuit
TL;DR: In this paper, a switch-capacitor (SC) circuit is integrated within a boost converter for a steep step-up of the line voltage, allowing for a boost of the input voltage to high values.