ネット・ゼロ・エネルギー住宅におけるハイブリッドAC/DC方式と従来AC方式の住宅効率比較
Hybrid AC/DC and conventional AC house efficiency for net zero energy homes (原題)
Taufik, Taufik, Nurwarsito, Heru, Bury, Tyler, Prasojo, Rahman Azis
🤖 gxceed AI 要約
日本語
ネット・ゼロ・エネルギー住宅(NZEH)に向け、ハイブリッドAC/DC方式と従来AC方式の住宅電気システムをMATLAB/Simulinkで定常効率比較した研究。120V/60Hzと230V/50Hzの両規格で12モデルを構築し、PV・蓄電池・変換器・線路抵抗を考慮。DC負荷が約1.5〜2.0kW以下の場合、ハイブリッド方式は変換段数削減により4〜11%高い効率を示すが、高DC負荷では48Vバス銅損で優位性が縮小し、60V化で損失低減と効率域拡大が可能と示した。
English
A MATLAB/Simulink steady-state comparison of hybrid AC/DC versus conventional AC residential electrical systems for net-zero energy homes. Twelve models (120V/60Hz and 230V/50Hz) include PV, battery storage, converters, and line resistance. Hybrid AC/DC houses achieve 4-11% higher efficiency when DC load stays below ~1.5-2.0 kW due to fewer conversion stages, but the advantage shrinks at higher DC loads from 48V bus copper losses; raising the DC bus to 60V extends the efficient range.
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
日本の住宅部門はZEH義務化・省エネ基準適合義務化が進み、太陽光・蓄電池の自家消費最適化が政策課題。DC給電は変換損失削減を通じた省エネ・再エネ活用に寄与し、住宅メーカーや電力会社の次世代住宅設計に示唆を与える。
In the global GX context
As global building codes and net-zero targets push residential electrification, DC-native distribution offers a pathway to cut conversion losses in solar-plus-storage homes. This work informs standards discussions (120V vs 230V) and design choices for NZEH architectures relevant to TCFD-aligned building decarbonization.
👥 読者別の含意
🔬研究者:住宅DC給電の効率限界と設計条件を定量化した基礎データを提供する。
🏢実務担当者:DC負荷比率が低〜中程度の住宅でハイブリッドAC/DC配電を採用する際の効率判断材料となる。
🏛政策担当者:ZEH・省エネ基準の設計指針やDC給電規格検討に参考となる。
📄 Abstract（原文）
The transition toward net-zero energy homes (NZEH) requires residential electrical systems that can efficiently integrate renewable generation, battery storage, and both AC and direct current (DC) loads. Although DC and hybrid AC/DC residential systems have been widely studied, limited work directly compares hybrid AC/DC and conventional AC house architectures under different grid standards, power levels, and AC/DC load ratios while considering DC bus losses. This study presents a MATLAB/Simulink-based steady-state efficiency comparison between hybrid AC/DC and conventional AC residential electrical systems. Twelve models were developed, consisting of six hybrid AC/DC and six conventional AC configurations under 120 V/60 Hz and 230 V/50 Hz standards. The models include PV generation, battery storage, inverter, AC/DC converter, multiple-input single-output (MISO) converter, and line-resistance effects. Results show that hybrid AC/DC houses achieve 4-11% higher efficiency than conventional AC houses when DC load demand remains below approximately 1.5-2.0 kW, mainly due to reduced conversion stages. At higher DC load levels, the efficiency advantage decreases because of copper losses in the 48 V DC bus. Increasing the DC bus voltage to 60 V reduces current-related losses and extends the efficient operating range. These findings indicate that hybrid AC/DC distribution is most suitable for residential applications with low-to-moderate DC demand, such as lighting, electronics, communication devices, and other DC-compatible appliances. The main contribution of this study is identifying the operating range, efficiency limit, and practical design implications of hybrid AC/DC residential distribution for future NZEH applications.
🔗 Provenance — このレコードを発見したソース
- base https://ijape.iaescore.com/index.php/IJAPE/article/view/22295first seen 2026-10-06 13:39:38 · last seen 2026-10-06 13:43:13
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