Optimized ultra high voltage gain DC–DC converter with current stress reduction for photovoltaic application

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-10 DOI:10.1049/pel2.12726

Ammar Falah ALgamluoli, Xiaohua Wu, Hayder K. Jahanger

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Abstract

This paper presents a non-isolated DC-DC converter designed to validate ultra-high voltage gain using a modified double boost mode. The objective is to achieve exceptionally high voltage gain by integrating a modified triple boost technique (MTBT), interleaved with second main and auxiliary third MOSFETs, and a modified switched inductor-capacitor (MSLC), effectively doubling the voltage transfer gain. Furthermore, MSLC is combined with the auxiliary third and double main MOSFET to double the voltage gain while concurrently mitigating voltage stress on the auxiliary MOSFET and diodes in the proposed converter (the PC). Additionally, all diodes in the MTBT operate under zero current switching (ZCS) and the double main and auxiliary third MOSFET face very low current stress at ultra-high voltage gain. The input current of the PC remains steady without pulsating at a low duty ratio, making the PC more suitable for renewable energy systems. The PC offers numerous advantages, exhibiting high efficiency and ensuring minimal voltage stress on power devices with low current stress on the power switches. Notably, PC aims to elevate input voltages from 30 V to a variable output range of 335 to 600 V, delivering 440 watts at 96.1% efficiency.

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优化的超高电压增益 DC-DC 转换器，可降低光伏应用中的电流应力

本文介绍了一种非隔离式直流-直流转换器，旨在利用改进的双升压模式验证超高电压增益。其目的是通过集成改进型三倍升压技术（MTBT）、交错式第二主MOSFET和辅助第三MOSFET以及改进型开关电感电容器（MSLC）来实现超高电压增益，从而有效地将电压传输增益提高一倍。此外，MSLC 还与辅助第三 MOSFET 和双主 MOSFET 相结合，将电压增益提高了一倍，同时减轻了拟议转换器（PC）中辅助 MOSFET 和二极管的电压压力。此外，MTBT 中的所有二极管都在零电流开关 (ZCS) 下工作，双主 MOSFET 和辅助第三 MOSFET 在超高电压增益下面临极低的电流压力。在低占空比条件下，PC 的输入电流保持稳定，没有脉动，因此更适合可再生能源系统。PC 具有众多优势，不仅效率高，而且能确保功率器件承受最小的电压应力，同时降低功率开关的电流应力。值得注意的是，PC 的目标是将输入电压从 30 V 提升到 335 至 600 V 的可变输出范围，以 96.1% 的效率提供 440 瓦的功率。

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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.