Open AccessEffect of eddy current in the laminations on the magnet field
Author(s) -
Y. Chung,
J. Galayda
Publication year - 1992
Language(s) - English
Resource type - Reports
DOI - 10.2172/89553
Subject(s) - magnet , eddy current , solenoid , dipole magnet , inductance , physics , force between magnets , field (mathematics) , phase (matter) , condensed matter physics , magnetic field , electropermanent magnet , nuclear magnetic resonance , amplitude , current (fluid) , mechanics , electrical engineering , voltage , superconducting magnet , demagnetizing field , permanent magnet synchronous generator , engineering , mathematics , optics , magnetization , thermodynamics , quantum mechanics , pure mathematics
In this note theory and measurements of the effect of the eddy current in the laminations on the magnet field are presented. The theory assumes a simple solenoid-type magnet with laminated iron core and ignores the end field effect. The measurements were made on the input voltage and current, and the dipole component of the magnetic field in the middle of the magnet bore. The amplitude and phase relations between these quantities give the field attenuation factor, phase delay, and resistance and inductance of the magnet as functions of frequency. Comparisons of results with theory are discussed
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