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Journals / Demiryolu Mühendisliği / 2026 / Sayı: 24

Development of a Modular Design Based Telescopic Rail Mechanism and Techno-Economic Analysis of Integration into Traction Inverter Systems Used in Rail Transportation Vehicle

Raylı Ulaşım Araçlarında Kullanılan Cer İnvertör Sistemlerinde Modüler Tasarım Tabanlı Teleskopik Ray Mekanizmasının Geliştirilmesi ve Sisteme Entegrasyonunun Tekno-ekonomik Analizi

Ümran Bakar(Yıldız Teknik Üniversitesi)0009-0004-9093-265X
Hüsna Yıldız(Metro İstanbul A.Ş.)0000-0002-1238-0034
Alisan Sarimaden(Medel Mühendislik ve Elektronik A.Ş.)0000-0002-9507-914X
Furkan Karakuş(Metro İstanbul A.Ş.)0000-0002-0218-3985
Nevzat Bayrak(Metro İstanbul A.Ş.)0009-0001-1341-8989
Zülfikar Çiftçi(Medel Mühendislik ve Elektronik A.Ş.)0009-0005-3471-3820
Revna Acar Vural(YILDIZ TEKNİK ÜNİVERSİTESİ)0000-0002-8587-5185
Pages
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Publication Date
2026-06-17
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results demonstrate that the proposed modular and telescopic rail based structure achieves an improvement of approximately 80–90% in maintenance duration compared to conventional fixed mounted designs, while significantly reducing maintenance costs at the fleet level.

📌 3 Key Takeaways

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Objective & Hypothesis:This study presents a design approach for traction inverter systems used in railway vehicles, focusing on modularity and maintenance accessibility.
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Key Findings & Data:The thermal performance of the design is analyzed, indicating that the maximum temperature of the power semiconductor modules remains at approximately 74 °C.
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Conclusion & Impact:The results demonstrate that the proposed modular and telescopic rail based structure achieves an improvement of approximately 80–90% in maintenance duration compared to conventional fixed mounted designs, while significantly reducing maintenance costs at the fleet level.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Cer invertörü · Raylı ulaşım sistemleri · Modüler mimari

Abstract

This study presents a design approach for traction inverter systems used in railway vehicles, focusing on modularity and maintenance accessibility. The electrical structure and internal layout of the traction inverter are evaluated based on a modular configuration of power electronic components, aiming to reduce power loop inductance and mitigate electromagnetic interactions. A telescopic rail based mechanical structure, developed in accordance with underfloor installation constraints, enables direct access to inverter modules during maintenance operations. The thermal performance of the design is analyzed, indicating that the maximum temperature of the power semiconductor modules remains at approximately 74 °C. Furthermore, different traction inverter architectures are comparatively assessed in terms of maintenance duration, personnel requirements, and cost parameters. The results demonstrate that the proposed modular and telescopic rail based structure achieves an improvement of approximately 80–90% in maintenance duration compared to conventional fixed mounted designs, while significantly reducing maintenance costs at the fleet level. These findings indicate that a modular and maintenance accessible design approach provides substantial advantages in terms of both technical performance and operational and maintenance cost efficiency.

Özet

Bu çalışmada, raylı ulaşım araçlarında kullanılan cer invertör sistemleri için modülerlik ve bakım erişilebilirliği odaklı bir tasarım yaklaşımı sunulmaktadır. Cer invertörün elektriksel yapısı ve iç yerleşim düzeni, güç elektroniği bileşenlerinin modüler alt birimler halinde yapılandırılması esas alınarak değerlendirilmiş ve bu kapsamda güç döngüsü endüktansının azaltılması ile elektromanyetik etkileşimlerin sınırlandırılması hedeflenmiştir. Araç altı yerleşim koşullarına uygun olarak geliştirilen teleskopik raylı mekanik yapı ile invertör modüllerine bakım sırasında doğrudan erişim sağlanmaktadır. Tasarımın termal performansı incelenmiş ve güç yarı iletken modüllerinde maksimum sıcaklık değerinin 74 °C seviyesinde kaldığı belirlenmiştir. Ayrıca, farklı cer invertör mimarileri bakım süresi, personel gereksinimi ve maliyet parametreleri açısından karşılaştırmalı olarak analiz edilmiştir. Elde edilen sonuçlar, modüler ve teleskopik raylı yapının klasik sabit montajlı yapılara kıyasla bakım sürelerinde yaklaşık %80–90 oranında iyileşme sağladığını ve filo ölçeğinde bakım maliyetlerini belirgin şekilde azalttığını göstermektedir. Bu bulgular, modüler ve bakım erişilebilirliği yüksek tasarım yaklaşımının hem teknik performans hem de işletme ve bakım maliyeti açısından çeşitli avantajlar sunduğunu ortaya koymaktadır.

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Cite This Article

Bakar, Ü., Yıldız, H., Sarimaden, A., Karakuş, F., Bayrak, N., Çiftçi, Z., Vural, R. A. (2026). Development of a Modular Design Based Telescopic Rail Mechanism and Techno-Economic Analysis of Integration into Traction Inverter Systems Used in Rail Transportation Vehicle. Demiryolu Mühendisliği, Sayı: 24. https://ajindex.com/articles/1666441

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