Evaluation of Magnetic Materials for Very High Frequency Power Applications
By Yehui Han, G. Cheung, An Li, Charles R. Sullivan, David J. Perreault. IEEE transactions on power electronics, 2008
221 citations recorded by the source corpus.
This paper investigates the loss characteristics of RF magnetic materials for power conversion applications in the 10 to 100 MHz range. A measurement method is proposed that provides a direct measurement of an inductor quality factor QL as a function of inductor current at RF frequencies, and enables indirect calculation of core loss as a function of flux density. Possible sources of error in measurement and calculation are evaluated and addressed. The proposed method is used to identify loss characteristics of several commercial RF magnetic-core materials. The loss characteristics of these materials, which have not previously been available, are illustrated and compared in tables and figures. The use of the method and data is demonstrated in the design of a magnetic-core inductor, which is applied in a 30-MHz inverter. The results of this paper are thus useful for the design of magnetic components for very high frequency applications.
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/0897d13ec1bc869a1fabec3cfb3a0c347bb4a8a9
How researchers see this paper
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In Electrical and Electronic Engineering
- Qiang Li
- Fred C. Lee
- Charles R. Sullivan
- Mingkai Mu
- David J. Perreault
- Chao Fei
- Bin Li
- Zhengyang Liu
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- New core loss measurement method for high frequency magnetic materials (2014, methodology): “One method for high frequency measurement connects a capacitor in series with the inductor of the core under test.[3] The capacitor is finely tuned to resonate with the inductor at the test frequency.”
- Measurements and Performance Factor Comparisons of Magnetic Materials at High Frequency (2015, methodology): “Datasheets include core loss data for materials up to a few megahertz [28], and the literature contains some sparse data in the VHF (30–300MHz) range [7].”