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Geometry optimization and characterization of three-phase medium frequency transformer for 10kVA isolated DC-DC converter

Lee, Youngsil; Vakil, Gaurang; Watson, Alan J.; Wheeler, Patrick

Geometry optimization and characterization of three-phase medium frequency transformer for 10kVA isolated DC-DC converter Thumbnail


Authors

Youngsil Lee



Abstract

Three-phase Dual Active Bridge converter is advisable for the High-power DC-DC conversion system.

In the ac link, galvanically isolated transformer operated at a medium frequency range provides stepping up or down of the secondary bridge voltage. This paper provides a magnetic design optimization of the medium frequency transformer for maximizing its efficiency when excited by a non-sinusoidal waveform. In this paper, a mathematical design of a 10kVA non-sinusoidal transformer had been developed and validated using two-dimensional (2D) transient finite element analysis (FEA). The set of selected design variables is defined in order to enhance the power density and efficiency of the targeted transformer and an optimization is carried out. Finally, a 10kVA transformer is prototyped and the results of core losses for nonsinusoidal excitation is confirmed experimentally.

Citation

Lee, Y., Vakil, G., Watson, A. J., & Wheeler, P. (2017, October). Geometry optimization and characterization of three-phase medium frequency transformer for 10kVA isolated DC-DC converter. Presented at IEEE Energy Conversion Congress and Exposition (ECCE) 2017, Cincinnati, OH, USA

Presentation Conference Type Edited Proceedings
Conference Name IEEE Energy Conversion Congress and Exposition (ECCE) 2017
Start Date Oct 1, 2017
End Date Oct 5, 2017
Acceptance Date May 1, 2017
Online Publication Date Nov 7, 2017
Publication Date 2017
Deposit Date Mar 22, 2018
Publicly Available Date Mar 22, 2018
Peer Reviewed Peer Reviewed
Pages 511-518
Book Title 2017 IEEE Energy Conversion Congress and Exposition (ECCE)
ISBN 978-1-5090-2999-0
DOI https://doi.org/10.1109/ECCE.2017.8095826
Keywords Transformer; Non-sinusoidal excitation; Optimization; Dual Active Bridge Converter; Transient finite element analysis
Public URL https://nottingham-repository.worktribe.com/output/886161
Publisher URL http://ieeexplore.ieee.org/document/8095826/
Related Public URLs http://www.ieee-ecce.org/2017/
Additional Information © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Published in ECCE 2017 : IEEE Energy Conversion Congress and expo. ISBN 9781509029983
Contract Date Mar 22, 2018

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