Analysis of Switched Inductor-Based High Gain SEPIC for Microgrid Systems

IF 1.9 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Transactions on Electrical Energy Systems Pub Date : 2024-07-08 DOI:10.1155/2024/8591539

Jayanthi K., N. Senthil Kumar, Gnanavadivel J., Albert Alexander Stonier, Geno Peter, Vijayakumar Arun, Vivekananda Ganji

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Abstract

DC microgrids are getting more attention because majority of the renewable energy sources generate DC output voltage and also modern gadgets require DC voltage for its operation. In this work, high gain SEPIC (HGSC) topology is derived from switched inductor voltage boosting cell (SIVBC). The HGSC converter provides continuous source current due to SIVBC and high conversion ratio and achieves maximum efficiency of 97.88% when compared with the existing SEPIC topology. The operating modes, conversion ratio expression, power loss distribution, voltage drop, current stress of the semiconductor devices, and efficiency are also analysed. In DC microgrids, the HGSC intends to track the peak power from solar PV array. An incremental conductance algorithm is employed to track the peak power of the solar PV modules. The power flow in the microgrid system is analysed by employing synchronous reference frame theory-based current controller. In order to validate the theoretical concepts of the HGSC converter, the hardware model is developed for the load rating of 1,000 W/380 V output voltage.

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用于微电网系统的基于开关电感器的高增益 SEPIC 分析

直流微电网正受到越来越多的关注，因为大多数可再生能源都能产生直流输出电压，而且现代小工具的运行也需要直流电压。在这项工作中，高增益 SEPIC（HGSC）拓扑结构源自开关电感升压单元（SIVBC）。与现有的 SEPIC 拓扑相比，HGSC 转换器通过 SIVBC 提供持续源电流和高转换率，实现了 97.88% 的最高效率。此外，还分析了工作模式、转换率表达式、功率损耗分布、电压降、半导体器件的电流应力和效率。在直流微电网中，HGSC 可跟踪太阳能光伏阵列的峰值功率。采用增量电导算法来跟踪太阳能光伏组件的峰值功率。通过采用基于同步参考框架理论的电流控制器，分析了微电网系统中的功率流。为了验证 HGSC 转换器的理论概念，开发了额定负载为 1,000 W/380 V 输出电压的硬件模型。

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来源期刊

International Transactions on Electrical Energy Systems ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

6.70

自引率

8.70%

发文量

342

期刊介绍： International Transactions on Electrical Energy Systems publishes original research results on key advances in the generation, transmission, and distribution of electrical energy systems. Of particular interest are submissions concerning the modeling, analysis, optimization and control of advanced electric power systems. Manuscripts on topics of economics, finance, policies, insulation materials, low-voltage power electronics, plasmas, and magnetics will generally not be considered for review.