Magnetic material comparisons for high-current inductors in low-medium frequency DC-DC converters

Brendan J. Lyons; John G. Hayes; Michael G. Egan

doi:10.1109/APEX.2007.357497

Magnetic material comparisons for high-current inductors in low-medium frequency DC-DC converters

Brendan J. Lyons
, John G. Hayes
, Michael G. Egan

School of Biological, Earth and Environmental Sciences

University College Cork

Research output: Chapter in Book/Report/Conference proceedings › Conference proceeding › peer-review

Abstract

The low component count, high full-load efficiency and simplicity of hard-switched dc-dc converters in the low to medium frequency range lead to a low cost and low weight/volume solution for high-power dc-dc converters. The choice of the magnetic material is critical in order to optimise the size of the inductor. In this paper, Fe-based amorphous metal, 6.5 % silicon steel, nanocrystaline, and low-frequency ferrite materials are analysed and investigated for use in a gapped CC-core inductor. A novel area product derivation method, which includes foil ac copper loss effects and core loss due to the gap, enables material comparisons over a range of frequencies and ripple ratios. As expected, inductor size for a given inductance decreases with increased frequency. Inductor size, however, can increase in the laminated materials due to increased air gap core loss effects. A 2.5 kW boost converter is built to verify the optimum material selection over the frequency range and ripple ratio of interest.

Original language	English
Title of host publication	APEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition
Pages	71-77
Number of pages	7
DOIs	https://doi.org/10.1109/APEX.2007.357497
Publication status	Published - 2007
Event	APEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition - Anaheim, CA, United States Duration: 25 Feb 2007 → 1 Mar 2007

Publication series

Name	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Conference

Conference	APEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition
Country/Territory	United States
City	Anaheim, CA
Period	25/02/07 → 1/03/07

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

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10.1109/APEX.2007.357497

Cite this

Lyons, B. J., Hayes, J. G., & Egan, M. G. (2007). Magnetic material comparisons for high-current inductors in low-medium frequency DC-DC converters. In APEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition (pp. 71-77). Article 4195701 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). https://doi.org/10.1109/APEX.2007.357497

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title = "Magnetic material comparisons for high-current inductors in low-medium frequency DC-DC converters",

abstract = "The low component count, high full-load efficiency and simplicity of hard-switched dc-dc converters in the low to medium frequency range lead to a low cost and low weight/volume solution for high-power dc-dc converters. The choice of the magnetic material is critical in order to optimise the size of the inductor. In this paper, Fe-based amorphous metal, 6.5 \% silicon steel, nanocrystaline, and low-frequency ferrite materials are analysed and investigated for use in a gapped CC-core inductor. A novel area product derivation method, which includes foil ac copper loss effects and core loss due to the gap, enables material comparisons over a range of frequencies and ripple ratios. As expected, inductor size for a given inductance decreases with increased frequency. Inductor size, however, can increase in the laminated materials due to increased air gap core loss effects. A 2.5 kW boost converter is built to verify the optimum material selection over the frequency range and ripple ratio of interest.",

author = "Lyons, \{Brendan J.\} and Hayes, \{John G.\} and Egan, \{Michael G.\}",

year = "2007",

doi = "10.1109/APEX.2007.357497",

language = "English",

isbn = "1424407133",

series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",

pages = "71--77",

booktitle = "APEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition",

note = "APEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition ; Conference date: 25-02-2007 Through 01-03-2007",

}

Lyons, BJ, Hayes, JG & Egan, MG 2007, Magnetic material comparisons for high-current inductors in low-medium frequency DC-DC converters. in APEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition., 4195701, Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, pp. 71-77, APEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition, Anaheim, CA, United States, 25/02/07. https://doi.org/10.1109/APEX.2007.357497

Magnetic material comparisons for high-current inductors in low-medium frequency DC-DC converters. / Lyons, Brendan J.; Hayes, John G.; Egan, Michael G.
APEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition. 2007. p. 71-77 4195701 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

Research output: Chapter in Book/Report/Conference proceedings › Conference proceeding › peer-review

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AU - Lyons, Brendan J.

AU - Hayes, John G.

AU - Egan, Michael G.

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N2 - The low component count, high full-load efficiency and simplicity of hard-switched dc-dc converters in the low to medium frequency range lead to a low cost and low weight/volume solution for high-power dc-dc converters. The choice of the magnetic material is critical in order to optimise the size of the inductor. In this paper, Fe-based amorphous metal, 6.5 % silicon steel, nanocrystaline, and low-frequency ferrite materials are analysed and investigated for use in a gapped CC-core inductor. A novel area product derivation method, which includes foil ac copper loss effects and core loss due to the gap, enables material comparisons over a range of frequencies and ripple ratios. As expected, inductor size for a given inductance decreases with increased frequency. Inductor size, however, can increase in the laminated materials due to increased air gap core loss effects. A 2.5 kW boost converter is built to verify the optimum material selection over the frequency range and ripple ratio of interest.

AB - The low component count, high full-load efficiency and simplicity of hard-switched dc-dc converters in the low to medium frequency range lead to a low cost and low weight/volume solution for high-power dc-dc converters. The choice of the magnetic material is critical in order to optimise the size of the inductor. In this paper, Fe-based amorphous metal, 6.5 % silicon steel, nanocrystaline, and low-frequency ferrite materials are analysed and investigated for use in a gapped CC-core inductor. A novel area product derivation method, which includes foil ac copper loss effects and core loss due to the gap, enables material comparisons over a range of frequencies and ripple ratios. As expected, inductor size for a given inductance decreases with increased frequency. Inductor size, however, can increase in the laminated materials due to increased air gap core loss effects. A 2.5 kW boost converter is built to verify the optimum material selection over the frequency range and ripple ratio of interest.

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M3 - Conference proceeding

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T2 - APEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition

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ER -

Magnetic material comparisons for high-current inductors in low-medium frequency DC-DC converters

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