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Loss Characterization and Calculation of Nanocrystalline Cores for High-frequency Magnetics Applications

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4 Author(s)
Shen, W. ; Center for Power Electronics Systems, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 USA ; Wang, F. ; Boroyevich, D. ; Tipton, C.W.

The loss density of the nanocrystalline material is experimentally characterized up to 500 kHz and above 1 Tesla in this paper. Flux density and loss density of the material under high operating temperature (150°C) are calibrated and reported. The core preparing effect on magnetic loss density is also identified by experiments, which provides information necessary to practical magnetic designs. A new empirical core loss calculation method has been proposed and verified for the nanocrystalline material under resonant operations that are popular in high-frequency power converter applications.

Published in:

Applied Power Electronics Conference, APEC 2007 - Twenty Second Annual IEEE

Date of Conference:

Feb. 25 2007-March 1 2007