2019-Sustainable Industrial Processing Summit
SIPS2019 Volume 13: Composite, Ceramic, Nanomaterials, Polymers, and Mathematics
| Editors: | F. Kongoli, M. de Campos, S. Lewis, S. Miller, S. Thomas |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2019 |
| Pages: | 171 pages |
| ISBN: | 978-1-989820-12-4 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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The Steinmetz law: Theoretical considerations
Marcos de Campos1;1UFF - FEDERAL FLUMINENSE UNIVERSITY, Volta Redonda, Brazil;
Type of Paper: Regular
Id Paper: 432
Topic: 16
Abstract:
According to the Steinmetz hysteresis law, the power losses P vary as function of the induction B with an exponent n, where n typically is 1.6. This results in the formula P= k B^n, where k is a constant. However, the exponent n can be different according to the evaluated material. From theoretical considerations, it is expected an exponent n=2, because the Power losses are given approximately by 4 B H, for the case of square hysteresis. Here, H is the applied field. As B is the product of the permeability times the applied field H, then theoretically is expected P = K B^2.
Reasons for n be lower than 2 are discussed. It is presented a model able to explain exponent n lower than 2. A better understanding of the Steinmetz law is useful for improvements of models able to predict the heating of steel laminations used in electric motors.