Extended high gain DC-DC converter with switched-inductors, switched-capacitors and soft-switching: Analysis and implementation

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-17 DOI:10.1049/pel2.12711

Pravat Biswal, Veera Venkata Subrahmanya Kumar Bhajana, Atif Iqbal, Vijay Kakani, Madhuchandra Popuri

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Abstract

This paper proposes an extended DC-DC converter with high voltage conversion ratio and soft-switching ability. The proposed converter has active switched-inductors, switched-capacitors included in the conventional high gain converter and operates in continuous conduction mode (CCM). Simple auxiliary resonant elements are added on the primary leg of the converter to provide design freedom for soft-switching operation. The significant merits of the proposed converter are lesser voltage and current stresses, high voltage gain with reduced component count and better efficiency. Additional feature of this converter is soft-switching operation under different load conditions and duty ratios without considerably increasing stresses. The zero voltage switching (ZVS) turn-on operation is obtained for all switching devices. Therefore, switching power losses are minimized greatly. This paper presents the description, principles of operation and steady state analysis in comparison with the existing high gain converters. The theoretical analysis is verified with a 350 W prototype operated at input is 20 V and output is 220 V. The overall efficiency achieved is 96.7%. The obtained results confirm ZVZCS operation at full load.

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采用开关电感器、开关电容器和软开关的扩展型高增益直流-直流转换器：分析与实现

本文提出了一种具有高电压转换率和软开关能力的扩展直流-直流转换器。该转换器在传统的高增益转换器中加入了有源开关电感器和开关电容器，并以连续导通模式（CCM）运行。在转换器的初级脚上添加了简单的辅助谐振元件，为软开关操作提供了设计自由度。该转换器的主要优点是电压和电流应力较小、电压增益高、元件数量少、效率高。该转换器的另一个特点是可在不同负载条件和占空比下进行软开关操作，而不会大幅增加应力。所有开关器件均可实现零电压开关（ZVS）接通操作。因此，开关功率损耗大大降低。本文介绍了与现有高增益转换器比较的说明、工作原理和稳态分析。输入电压为 20 V，输出电压为 220 V，350 W 的原型验证了理论分析。获得的结果证实了 ZVZCS 在满负荷下的运行。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.