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Title: Reducing core losses in amorphous Fe{sub 80}B{sub 12}Si{sub 8} ribbons by laser-induced domain refinement

Abstract

In the United States alone, power conversion inefficiencies are responsible for huge amounts of wasted energy every year. Most of this inefficiency is due to resistive losses, however iron losses (hysteresis and anomalous, or excess eddy current) are also significant. Werner and Jaffe calculated that core losses in electric motors alone accounted for 45 x 10{sup 9} kW.hr. Even small fractional improvements in efficiency can lead to substantial savings. Here, in transformer cores amorphous metallic ribbons are competitive substitutes for silicon-iron laminates due to their low values of core loss. Research has been conducted to further improve performance by using techniques that can reduce core losses in the metallic ribbons. One way of reducing core loss is to anneal the samples in a magnetic field. However, further reductions in core loss are possible by scribing the surface of the ribbons using a laser beam. The scribing pattern can lead to a refined domain structure and reduced excess loss. It has been found that under suitable processing conditions, core loss can be further reduced by as much as 20% by laser scribing.

Authors:
; ; ;
Publication Date:
Research Org.:
Ames Lab., IA (US)
Sponsoring Org.:
USDOE; National Science Foundation (NSF)
OSTI Identifier:
20000823
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:
36 MATERIALS SCIENCE; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ENERGY EFFICIENCY; TRANSFORMERS; IRON BASE ALLOYS; BORON ALLOYS; SILICON ALLOYS; ENERGY LOSSES; PERFORMANCE; AMORPHOUS STATE; DOMAIN STRUCTURE

Citation Formats

Johnson, M.J., Chen, R., Jiles, D.C., and Ramanan, V.R. Reducing core losses in amorphous Fe{sub 80}B{sub 12}Si{sub 8} ribbons by laser-induced domain refinement. United States: N. p., 1999. Web. doi:10.1109/20.800690.
Johnson, M.J., Chen, R., Jiles, D.C., & Ramanan, V.R. Reducing core losses in amorphous Fe{sub 80}B{sub 12}Si{sub 8} ribbons by laser-induced domain refinement. United States. doi:10.1109/20.800690.
Johnson, M.J., Chen, R., Jiles, D.C., and Ramanan, V.R. Wed . "Reducing core losses in amorphous Fe{sub 80}B{sub 12}Si{sub 8} ribbons by laser-induced domain refinement". United States. doi:10.1109/20.800690.
@article{osti_20000823,
title = {Reducing core losses in amorphous Fe{sub 80}B{sub 12}Si{sub 8} ribbons by laser-induced domain refinement},
author = {Johnson, M.J. and Chen, R. and Jiles, D.C. and Ramanan, V.R.},
abstractNote = {In the United States alone, power conversion inefficiencies are responsible for huge amounts of wasted energy every year. Most of this inefficiency is due to resistive losses, however iron losses (hysteresis and anomalous, or excess eddy current) are also significant. Werner and Jaffe calculated that core losses in electric motors alone accounted for 45 x 10{sup 9} kW.hr. Even small fractional improvements in efficiency can lead to substantial savings. Here, in transformer cores amorphous metallic ribbons are competitive substitutes for silicon-iron laminates due to their low values of core loss. Research has been conducted to further improve performance by using techniques that can reduce core losses in the metallic ribbons. One way of reducing core loss is to anneal the samples in a magnetic field. However, further reductions in core loss are possible by scribing the surface of the ribbons using a laser beam. The scribing pattern can lead to a refined domain structure and reduced excess loss. It has been found that under suitable processing conditions, core loss can be further reduced by as much as 20% by laser scribing.},
doi = {10.1109/20.800690},
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}
}