Journal ArticleDOI
Cascade Cockcroft–Walton Voltage Multiplier Applied to Transformerless High Step-Up DC–DC Converter
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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
ダイオードの接合容量を考慮したCockcroft-Walton回路における昇圧比向上および力率改善;ダイオードの接合容量を考慮したCockcroft-Walton回路における昇圧比向上および力率改善;Boost Ratio and Power Factor Improvement in Cockcroft-Walton Circuit with Diode Junction Capacitor
TL;DR: In this article, the authors investigated the Cockcroft-Walton (CW) circuit with an input inductor and showed that the LC resonance between the input inductors and the diode junction capacitors improves the boost ratio.
Book
Analysis and Design of Power Converter Topologies for Application in Future More Electric Aircraft
Journal ArticleDOI
Isolated high step-up DC–DC converter with integrated cascade structure
Junlong Lu,Yi Wang,Xin Li +2 more
TL;DR: In this paper, an isolated high step-up DC-DC converter with integrated cascade structure is proposed, which is equivalent to that of a cascade consisting of a boost converter and an isolated buck-boost converter.
Journal ArticleDOI
Modification of Cockcroft–Walton-Based High-Voltage Multipliers with 220 V and 50 Hz Input for Non-Thermal Food Processing Apparatus
TL;DR: A topological modification of three interesting design approaches in bipolar structure for 220 V and 50 Hz AC input to generate more than 3.5 kV DC output within short time periods is presented.
Proceedings Article
An experimental analysis of output voltage characteristics in cockcroft-walton circuit with SiC diode and input inductor
TL;DR: In this paper, the Cockcroft-Walton circuit with SiC diodes and an input inductor was proposed and experimentally clarified that the LC resonance causes the output voltage to increase.
References
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Journal ArticleDOI
Power electronics as efficient interface in dispersed power generation systems
TL;DR: In this article, power electronics, the technology of efficiently processing electric power, play an essential part in the integration of the dispersed generation units for good efficiency and high performance of the power systems.
Journal Article
Power Electronics as Efficient Interface in Dispersed Power Generation Systems
TL;DR: In this article, power electronics, the technology of efficiently processing electric power, play an essential part in the integration of the dispersed generation units for good efficiency and high performance of the power systems.
Journal ArticleDOI
Switched-Capacitor/Switched-Inductor Structures for Getting Transformerless Hybrid DC–DC PWM Converters
TL;DR: The superiority of the new, hybrid converters is mainly based on less energy in the magnetic field, leading to saving in the size and cost of the inductors, and less current stresses in the switching elements, lead to smaller conduction losses.
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
A Review of the Single Phase Photovoltaic Module Integrated Converter Topologies With Three Different DC Link Configurations
Quan Li,Peter Wolfs +1 more
TL;DR: In this paper, a topology study of the PV MICs in the power range below 500 W and covers most topologies recently proposed for MIC applications is presented, where the MIC topologies are classified into three different arrangements based on the dc link configurations.
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