skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Finite element modeling of an electrically variable inductor

Abstract

A new type of electrically variable inductor has been investigated. This uses an ac excitation field with an orthogonal dc bias field to control the properties of the device. Measurements showed that the effective inductance can be decreased by increasing the orthogonal dc bias field. With an appropriate current in the orthogonal bias coils, an inductance plateau can be reached in which the inductance remains stable over a range of excitation currents. The inductance value can be adjusted by controlling the orthogonal current. Based on an existing anhysteretic magnetization model, nonlinear 3D finite element modeling was successfully used to model the distribution of flux density and to identify the region of saturation which is believed to result in the decrease in effective inductance of the inductor. The effective inductance of the device was also modeled using numerical finite element calculations. The modeled inductance showed broad agreement with experimental results and predicted the observed trend in inductance.

Authors:
;
Publication Date:
Research Org.:
Ames Lab., IA (US)
OSTI Identifier:
20000793
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; SOLENOIDS; FINITE ELEMENT METHOD; MATHEMATICAL MODELS; NONLINEAR PROBLEMS; INDUCTANCE; THREE-DIMENSIONAL CALCULATIONS

Citation Formats

Bi, Y., and Jiles, D.C. Finite element modeling of an electrically variable inductor. United States: N. p., 1999. Web. doi:10.1109/20.800575.
Bi, Y., & Jiles, D.C. Finite element modeling of an electrically variable inductor. United States. doi:10.1109/20.800575.
Bi, Y., and Jiles, D.C. Wed . "Finite element modeling of an electrically variable inductor". United States. doi:10.1109/20.800575.
@article{osti_20000793,
title = {Finite element modeling of an electrically variable inductor},
author = {Bi, Y. and Jiles, D.C.},
abstractNote = {A new type of electrically variable inductor has been investigated. This uses an ac excitation field with an orthogonal dc bias field to control the properties of the device. Measurements showed that the effective inductance can be decreased by increasing the orthogonal dc bias field. With an appropriate current in the orthogonal bias coils, an inductance plateau can be reached in which the inductance remains stable over a range of excitation currents. The inductance value can be adjusted by controlling the orthogonal current. Based on an existing anhysteretic magnetization model, nonlinear 3D finite element modeling was successfully used to model the distribution of flux density and to identify the region of saturation which is believed to result in the decrease in effective inductance of the inductor. The effective inductance of the device was also modeled using numerical finite element calculations. The modeled inductance showed broad agreement with experimental results and predicted the observed trend in inductance.},
doi = {10.1109/20.800575},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt2,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}