Journal ArticleDOI
Cascade Cockcroft–Walton Voltage Multiplier Applied to Transformerless High Step-Up DC–DC Converter
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TLDR
In this paper, the proposed control strategy employs two independent frequencies, one of which operates at high frequency to minimize the size of the inductor while the other one operates at relatively low frequency according to the desired output voltage ripple.Abstract:
This paper proposes a high step-up dc-dc converter based on the Cockcroft-Walton (CW) voltage multiplier without a step-up transformer. Providing continuous input current with low ripple, high voltage ratio, and low voltage stress on the switches, diodes, and capacitors, the proposed converter is quite suitable for applying to low-input-level dc generation systems. Moreover, based on the n-stage CW voltage multiplier, the proposed converter can provide a suitable dc source for an n + 1-level multilevel inverter. In this paper, the proposed control strategy employs two independent frequencies, one of which operates at high frequency to minimize the size of the inductor while the other one operates at relatively low frequency according to the desired output voltage ripple. A 200-W laboratory prototype is built for test, and both simulation and experimental results demonstrate the validity of the proposed converter.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
Nonisolated High Step-Up DC–DC Converters Adopting Switched-Capacitor Cell
Gang Wu,Xinbo Ruan,Zhihong Ye +2 more
TL;DR: To integrate the advantages of the high voltage gain of a switched-capacitor (SC) converter and excellent output regulation of a switching-mode dc-dc converter, a method of combining the two types of converters is proposed in this paper.
Journal ArticleDOI
A DC–DC Converter With High Voltage Gain and Two Input Boost Stages
Venkata Anand Kishore Prabhala,Poria Fajri,Venkat Sai Prasad Gouribhatla,Bhanu Prashant Baddipadiga,Mehdi Ferdowsi +4 more
TL;DR: In this article, a family of nonisolated high-voltage-gain dc-dc power electronic converters is proposed, which can be used as multiport converters and draw continuous current from two input sources.
Journal ArticleDOI
Design and Analysis of a High-Efficiency DC–DC Converter With Soft Switching Capability for Renewable Energy Applications Requiring High Voltage Gain
Moumita Das,Vivek Agarwal +1 more
TL;DR: A novel high voltage gain, high-efficiency dc-dc converter based on coupled inductor, intermediate capacitor, and leakage energy recovery scheme, which enables the use of low voltage rating switch (with low “on-state” resistance), improving the overall efficiency of the system.
Journal ArticleDOI
Switched-Coupled-Inductor Quasi-Z-Source Inverter
TL;DR: In this article, a switched-coupled-inductor quasi-Z-source inverter (SCL-qZSI) is proposed, which integrates a switch-capacitor and a three-winding switched-Coupled Inductive inductor into a conventional qZSI.
References
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Journal ArticleDOI
Cascaded DC-DC converter connection of photovoltaic modules
Geoffrey R. Walker,Paul Sernia +1 more
TL;DR: In this paper, the authors proposed an alternative topology of nonisolated per-panel dc-dc converters connected in series to create a high voltage string connected to a simplified dc-ac inverter.
Book
High-voltage engineering: Fundamentals
E. Kuffel,W.S. Zaengl,J. Kuffel +2 more
TL;DR: In this paper, the authors describe the generation of high voltages, measurement of high voltage measurements and field stress control, electrical breakdown in gases, and non-destructive insulation test techniques.
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Voltage Multiplier Cells Applied to Non-Isolated DC–DC Converters
TL;DR: In this article, the use of the voltage multiplier technique applied to the classical non-isolated dc-dc converters in order to obtain high step-up static gain, reduction of the maximum switch voltage, zero current switching turn-on was introduced.
Journal ArticleDOI
Transformerless DC–DC Converters With High Step-Up Voltage Gain
TL;DR: This paper proposes transformerless dc-dc converters to achieve high step-up voltage gain without an extremely high duty ratio and develops a prototype circuit to verify the performance.
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