An Ultrahigh Step-Up Quadratic Boost Converter Based on Coupled-Inductor

In this article, an ultrahigh step-up quadratic boost converter based on coupled-inductor is proposed. The voltage gain of the proposed converter can be enhanced significantly by increasing the duty cycle due to the quadratic boost structure. A coupled-inductor integrated with a voltage doubler cell...

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Bibliographic Details
Published inIEEE transactions on power electronics Vol. 35; no. 12; pp. 13200 - 13209
Main Authors Hu, Renjun, Zeng, Jun, Liu, Junfeng, Guo, Zhiyu, Yang, Ningrui
Format Journal Article
LanguageEnglish
Published New York IEEE 01.12.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Capacitors
Conversion ratio
Converters
Coupled-inductor
Energy conversion efficiency
Equivalent circuits
High-voltage techniques
Inductors
Leakage
low voltage stress
quadratic boost
Stress
Switches
Topology
ultrahigh step-up
Voltage gain
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Summary:In this article, an ultrahigh step-up quadratic boost converter based on coupled-inductor is proposed. The voltage gain of the proposed converter can be enhanced significantly by increasing the duty cycle due to the quadratic boost structure. A coupled-inductor integrated with a voltage doubler cell is applied to further improve conversion ratio and reduce voltage stresses. The leakage inductor current is utilized to achieve zero-current switching for output diode . Meanwhile, high efficiency is possible as the energy of the leakage inductor is recycled and transferred to the load. The operating principle and steady-state analysis are provided, and a 280-W prototype is designed to verify the validity of the proposed converter.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2020.2995911