Scaling Law for Hysteresis Losses in Round Superconductors Magnetized by Alternating, Rotating or Elliptical Magnetic Fields

AC losses in an isolated superconducting round wire with a power-law electrical behavior produced by the combined effect of transverse alternating and rotating fields, i.e., an elliptical field, are investigated. The goal is to provide semianalytical expressions of the magnetization losses with a hi...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity Vol. 25; no. 1; pp. 1 - 12
Main Authors: Lorin, Clement, Netter, Denis, Masson, Philippe J.
Format: Journal Article
Language:English
Published: New York IEEE 01.02.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Institute of Electrical and Electronics Engineers
Subjects:
Coils
Condensed Matter
Data processing
Electric power
Electrical resistivity
Engineering Sciences
Magnetic fields
Magnetic losses
Magnetization
Mathematical models
Numerical models
Optimization
Physics
Rotating
Stators
Superconductivity
superconducting rotating machine
AC losses
magnetization losses
practical fit
rotating field
ISSN:1051-8223, 1558-2515
Online Access:Get full text
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Summary:AC losses in an isolated superconducting round wire with a power-law electrical behavior produced by the combined effect of transverse alternating and rotating fields, i.e., an elliptical field, are investigated. The goal is to provide semianalytical expressions of the magnetization losses with a high enough reliability to be used in sizing code development or optimization methods. The fit expressions are based on data generated by means of a 2-D numerical model using the well-known and proved H-formulation. In the meantime, data processing allows for revealing a universal variable cn of utmost importance in magnetization loss calculation. This variable depends on the n-value of the power-law resistivity, and both the dimensionless magnetic field b* and frequency f*.
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ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2014.2341255