A high gain quasi Z-source based full-bridge isolated DC-DC converter with extendable structure for grid-tied/standalone PV system

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-09 DOI:10.1049/pel2.12779

Kanagaraj Nallaiya Gounder, Ramasamy Murugesan, Vijayakumar Madhaiyan, Obaid Aldosari

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引用次数: 0

Abstract

A multi-input single-output converter that is based on the impedance network and the standard isolated converters is presented. The topology is named quasi Z-source full-bridge isolated converter (qZSFBIC). The proposed topology helps to integrate various renewable power generation systems with a common three-phase grid-connected inverter. It was also capable of providing isolation between the input and output circuits in addition to the boost function. The integration of multiple energy sources is achieved using fewer components than conventional converters. As a result, it achieves greater conversion efficiency and has improved circuit characteristics. It offers a larger voltage control range as compared to the conventional ZSC and enhances the input-output voltage transformation ratio. To determine whether or not the suggested converter is technically feasible, the circuit architecture, operating principle, control mechanism, and simulation results are presented. An improved proportional resonant-second order general integrator (IPR-SOGI) has been utilized to provide a gating signal for the voltage source inverter. The 1.5 kW, 400 V, 50 Hz model is designed to authenticate the proposed scheme with qZSFBIC. The results showed that the proposed converter offered double the time of boosting than the conventional ZSC converter and the conversion efficiency is around 89%.

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基于高增益准 Z 源的全桥隔离式 DC-DC 转换器，具有可扩展结构，适用于并网/独立光伏系统

本文介绍了一种基于阻抗网络和标准隔离转换器的多输入单输出转换器。该拓扑结构被命名为准 Z 源全桥隔离转换器（qZSFBIC）。所提出的拓扑结构有助于将各种可再生能源发电系统与常见的三相并网逆变器集成在一起。除了升压功能外，它还能在输入和输出电路之间提供隔离。与传统转换器相比，它使用更少的元件就能实现多种能源的集成。因此，它实现了更高的转换效率，并改善了电路特性。与传统的 ZSC 相比，它提供了更大的电压控制范围，并提高了输入输出电压转换率。为了确定所建议的转换器在技术上是否可行，本文介绍了电路结构、工作原理、控制机制和仿真结果。改进型比例谐振-二阶通用积分器（IPR-SOGI）用于为电压源逆变器提供门控信号。设计了 1.5 kW、400 V、50 Hz 的模型，以验证使用 qZSFBIC 的拟议方案。结果表明，与传统的 ZSC 转换器相比，建议的转换器的升压时间延长了一倍，转换效率约为 89%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.