On the nonlinearities of inductors using linear ferrite toroidal cores
- Creators
- Watson, J. Kenneth
Abstract
The importance of magnetic device characterization as an engineering design tool for inductors and transformers using linear ferrites is emphasized. A piecewise linear model is given for the permeance of a toroidal core, to bring into evidence the role of core geometry on partial saturation under the assumption of an ideally linear core material with abrupt saturation. A variety of measurements are reported for two different inductors under extremes of signal that partially saturate the cores. Measurements and theory are found to agree well only for low-level signals where hysteretic effects are small. At high signal levels the lack of quantitative agreement is attributed to the fact that different features of the hysteresis are probed by the different classes of measurement signals.
Additional Information
© 1981 IEEE. Manuscript received August 6, 1980; revised January 5, 1981. An early version of this paper was presented at the 1980 INTERMAG Conference, Boston, MA, April 21-24. Partial support by the National Science Foundation and by the University of Florida EIES is gratefully acknowledged. The author thanks Camilla Sieck for assistance with the measurements. Thanks go also to Emil Hozeny for sample cores and to B. B. Ghate for a review of the manuscript.Attached Files
Published - 01061205.pdf
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Additional details
- Eprint ID
- 79732
- Resolver ID
- CaltechAUTHORS:20170801-174617800
- NSF
- University of Florida
- Created
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2017-08-02Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field