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A practical approach for magnetic core-loss characterization

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3 Author(s)
F. Dong Tan ; QSC Audio Prod. Inc., Costa Mesa, CA, USA ; J. L. Vollin ; S. M. Cuk

A practical approach for magnetic core-loss characterization up to a few megahertz is presented. An error analysis is for the first time performed, revealing that corrections are needed to compensate for errors introduced by the extra phase shift inherent in a measurement setup, and by shunt parasitic capacitance associated with an inductive device under test. A simple technique is then proposed to control the error so as to satisfy prescribed tolerances. Extensive measurements done on a TDK PC40 core yield results which support the analysis. Several sample cores are then characterized at a few megahertz

Published in:

IEEE Transactions on Power Electronics  (Volume:10 ,  Issue: 2 )