Evaluation of Magnetic Materials for Very High Frequency Power Applications
Author(s)
Han, Yehui; Cheung, Grace; Li, An; Sullivan, Charles R.; Perreault, David J.
DownloadHan Evaluation of Magnetic TPEL.pdf (4.840Mb)
OPEN_ACCESS_POLICY
Open Access Policy
Creative Commons Attribution-Noncommercial-Share Alike
Terms of use
Metadata
Show full item recordAbstract
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.
Date issued
2012-01Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Laboratory for Electromagnetic and Electronic SystemsJournal
IEEE Transactions on Power Electronics
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Han, Yehui, Grace Cheung, An Li, Charles R. Sullivan, and David J. Perreault. “Evaluation of Magnetic Materials for Very High Frequency Power Applications.” IEEE Trans. Power Electron. 27, no. 1 (n.d.): 425–435.
Version: Author's final manuscript
ISSN
0885-8993
1941-0107