New core loss measurement method for high frequency magnetic materials

Magnetic core loss is an emerging concern for integrated POL converters. As switching frequency increases, core loss is comparable to or even higher than winding loss. Accurate measurement of core loss is important for magnetic design and converter loss estimation. And exploring new high frequency m...

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Bibliographic Details
Published in2010 IEEE Energy Conversion Congress and Exposition pp. 4384 - 4389
Main Authors Mingkai Mu, Qiang Li, Gilham, David, Lee, Fred C, Ngo, Khai D T
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2010
Subjects
Capacitors
Core loss
core loss measurement
Current measurement
ferrite
Frequency measurement
high frequency
integrated POL
Loss measurement
magnetic loss
Sensors
Windings
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ISBN1424452864
9781424452866
ISSN2329-3721
DOI10.1109/ECCE.2010.5618454

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Summary:Magnetic core loss is an emerging concern for integrated POL converters. As switching frequency increases, core loss is comparable to or even higher than winding loss. Accurate measurement of core loss is important for magnetic design and converter loss estimation. And exploring new high frequency magnetic materials need a reliable method to evaluate their losses. However, conventional method is limited to low frequency due to sensitivity to phase discrepancy. In this paper, a new method is proposed for high frequency (lMHz~50MHz) core loss measurement. The new method reduces the phase induced error from over 100% to <;5%. So with the proposed methods, the core loss can be accurately measured.
ISBN:1424452864
9781424452866
ISSN:2329-3721
DOI:10.1109/ECCE.2010.5618454