Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
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Item Design and Analysis of Wide Bandgap device based DAB Converter for EV On-Board Chargers(Institute of Electrical and Electronics Engineers Inc., 2024) Kumar, A.; Kalpana, R.; Bobba, P.B.This paper focused on design and simulation of 3.3 kW, 400V DC output, Gallium nitride high electron mobility transistors (GaN-HEMT) based Dual Active Bridge (DAB) DC-DC Converter for EV On-board Chargers (OBC). An optimized design of converter with high power density and high efficiency is proposed. GaN-HEMT and Planar Transformer are selected to achieve high power density due to its compact size and high switching frequency. Proposed GaN based converter design, overall component selection, modes of operation and control strategies are discussed in details. The simulation of proposed converter is carried out in Plexim software. The performance analysis of GaN based DAB and SiC based DAB are presented in Plexim software. The overall device losses of both converters are compared and presented. © 2024 IEEE.Item Design and Analysis of GaN and Planar Magnetics based DAB Converter for EV On-Board Chargers(Institute of Electrical and Electronics Engineers Inc., 2025) Kumar, A.; Kalpana, R.In this paper, A A 3.3kW, 600V DC input, 400V DC output, 250kHz Gallium nitride (GaN) based Dual Active Bridge (DAB) DC-DC Converter for EV on-board charger (OBC) is proposed. Typically, OBC consists of two stages, AC-DC and isolated DC-DC converter. An optimized design of isolated DC-DC converter with high switching frequency is proposed. In order to achieve high power density and high efficiency, DAB converter with GaN high electron mobility transistors (GaN-HEMT) as switch and Planar transformer are selected for converter design. Design of Planar transformer-based DAB Converter design are discussed in detail. Core selections and PCB based winding design of Planar Transformer are also discussed. The OBC is designed and evaluated in PLECS software. The performance of proposed GaN based DC-DC converter and SiC-DAB are analyzed and their losses are compared and presented in PLECS Software. © 2025 IEEE.