Parallel Resonant Loss Characterization of High-Frequency Magnetic Components

We propose a method to characterize losses in inductors and transformers especially suited for high operating frequencies ( {\geq }500 kHz). The proposed technique uses parallel resonance to directly measure the loss, i.e., the real component of a structure's complex impedance. The scheme uniq...

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Bibliographic Details
Published in:IEEE journal of emerging and selected topics in power electronics 2024-12, Vol.12 (6), p.5696-5704
Main Authors: Brown, Alyssa, Solomentsev, Michael, Hanson, Alex J.
Format: Article
Language:English
Subjects:
Copper loss
core loss
Current measurement
Error analysis
Frequency measurement
high frequency (HF)
Impedance
Inductors
Loss measurement
Magnetic materials
Magnetic resonance
magnetics
transformers
Voltage measurement
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Description
Summary:We propose a method to characterize losses in inductors and transformers especially suited for high operating frequencies ( {\geq }500 kHz). The proposed technique uses parallel resonance to directly measure the loss, i.e., the real component of a structure's complex impedance. The scheme uniquely allows for testing low-impedance devices under tests (DUTs) at high drive currents, enabling a more complete characterization of magnetic materials and components. We describe the method, analyze error mechanisms, and experimentally validate the method against alternative resonant techniques.
ISSN:2168-6777
2168-6785
DOI:10.1109/JESTPE.2024.3463537