Design of low-profile nanocrystalline transformer in high-current phase shifted DC-DC converter

Conference Paper (2010)
Author(s)

Y. Wang (TU Delft - Electrical Power Processing)

SWH de Haan (TU Delft - Electrical Power Processing)

Braham Ferreira (TU Delft - Electrical Power Processing)

Research Group
Electrical Power Processing
DOI related publication
https://doi.org/doi:10.1109/ECCE.2010.5617809
More Info
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Publication Year
2010
Language
English
Research Group
Electrical Power Processing
Pages (from-to)
2177-2181
ISBN (print)
978-1-4244-5286-6

Abstract

In the high-current phase-shifted DC-DC converter, the high-frequency transformer is a key component. Its conduction loss needs to be reduced and the leakage inductance needs to be specifically tuned. This paper investigates the design of low-profile nanocrystalline transformer for high-current phase-shifted DC-DC converters. The core dimension optimization to minimize the transformer loss is proposed. A lossless method of tuning the leakage inductance of the transformer, suitable for low-profile nanocrystalline transformer, is discussed. Designed for a dual active bridge (DAB) converter with high current transients, the planar transformers with both ferrite (3C90) and nanocrystalline (FT-3M) materials are compared. From these comparisons, the benefits and drawbacks of the low-profile nanocrystalline cores are identified.

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