tuje Turkish Journal of Engineering 2587-1366 Murat YAKAR 10.31127/tuje.1828170 Circuits and Systems Electrical Engineering (Other) Devreler ve Sistemler Elektrik Mühendisliği (Diğer) A Comparative Simulation–Hardware Co-Validation Framework for SEPIC and Full-Bridge DC–DC Converters in Electric Vehicle Battery Charging via dSPACE DS1104 https://orcid.org/0009-0002-2082-6531 Gauswami Alpeshbharathi Gujarat Technological university https://orcid.org/0000-0001-8997-5426 Shah Hardik A.D.Patel Insitute of Technology , The Charutar Vidya Mandal (CVM) University 05 01 2026 10 2 534 547 11 24 2025 02 10 2026 Copyright © 2017, Turkish Journal of Engineering 2017 Turkish Journal of Engineering

The accelerating adoption of electric vehicles (EVs) demands compact and high-efficiencient EV battery charger. The DC–DC converters is the key element of EV charger to ensure reliable battery charging under diverse operating conditions. This paper presents a comparative simulation–hardware co-validation framework of 56V charging voltage and 15A for evaluating a non-isolated Single-Ended Primary Inductor Converter (SEPIC) and an isolated Full-Bridge (FB) DC–DC converter in identical operating conditions. Experimental validation is performed on reduced-scale hardware prototypes using a dSPACE DS1104 real-time control platform. Performance comparison is carried out for duty-cycle, output voltage ripple contents, semiconductor stress and efficiency of the converter. Results from both simulation and hardware testing shows that the FB converter operates 4-6 % more efficiently and produces significantly 30% lower output voltage ripple than the SEPIC converter under rated conditions. The proposed co-validation framework effectively integrates simulation and hardware testing and provides practical design insights for next-generation EV battery chargers.

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