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High Gain Non-Isolated Switched Inductor SEPIC Converter for Renewable Energy Applications

再生可能エネルギー応用のための高利得非絶縁スイッチドインダクタSEPICコンバータ (AI 翻訳)

Gopalakrishnan D, R AC, Sidharthan V, Nethagani S

Research Squareプレプリント2026-08-12#エネルギー転換経営インパクト: コスト削減対象セクター: power
DOI: 10.21203/rs.3.rs-10419105/v1
原典: https://doi.org/10.21203/rs.3.rs-10419105/v1

🤖 gxceed AI 要約

日本語

再生可能エネルギーシステム向けに、スイッチドインダクタネットワークを用いた高利得非絶縁SEPICコンバータを提案。従来の高昇圧コンバータの課題である半導体素子の電圧ストレスや効率低下を改善し、太陽光や燃料電池、DCマイクログリッドに適する。75Wの実験プロトタイプで高電圧利得と高効率を実証した。

English

This paper proposes a high-gain non-isolated switched-inductor SEPIC converter for renewable energy systems, addressing issues of voltage stress and efficiency in conventional converters. The topology is suitable for solar, fuel cells, and DC microgrids. A 75W prototype validates high voltage gain and high efficiency.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本の再生可能エネルギー導入拡大やDCマイクログリッド開発において、高効率な電力変換技術は系統連系や分散電源の有効活用に寄与する。本方式は太陽光発電の出力電圧を高圧直流バスに効率的に接続するための実用的な選択肢を提供する。

In the global GX context

Globally, the transition to renewable energy requires efficient power conversion for integrating low-voltage sources into high-voltage grids and microgrids. This converter design offers a practical solution for improving efficiency and reducing component stress, supporting the broader energy transition.

👥 読者別の含意

🔬研究者:Provides a novel converter topology with experimental validation, useful for power electronics researchers focusing on renewable energy integration.

🏢実務担当者:Offers a potential design for high-gain DC-DC conversion in solar or fuel cell systems, which could improve system efficiency and reduce costs.

📄 Abstract（原文）

<title>Abstract</title> <p>High step-up DC-DC converters are required in renewable energy systems to efficiently interface low-voltage sources with high-voltage loads and DC microgrids. The conventional high gain converter suffers from high voltage stress of semiconductor devices, low efficiency and complex circuit architecture. A high gain non-isolated switched inductor single-ended primary-inductor converter (SI-SEPIC) for renewable energy applications is presented in this research. The suggested topology adopts the switched-inductor network to realize a much higher voltage conversion ratio. The converter retains the intrinsic benefits of standard SEPIC converter, such as non-inverted output voltage and wide working range, which make it suited for solar systems, fuel cells, battery-powered systems and DC microgrids. The converter is analyzed in detail in terms of operating modes, steady state characteristics, derivation of voltage gain, design of components and performance evaluation. The proposed converter is experimentally validated with a laboratory prototype of 75 W. The experimental results support the validity of the proposed SI-SEPIC converter for renewable energy applications with steady operation; high voltage gain and high-power conversion efficiency.</p>

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