Iron Loss Analysis of Permanent-Magnet Machines by Considering Hysteresis Loops Affected by Multi-Axial Stress

This article describes a method to calculate iron loss of permanent-magnet machines by considering the hysteresis loops affected by multi-axial stress. A simple hysteresis model is introduced and modified by reluctivity and hysteresis loss increase ratios, which can be determined by core material ex...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2020-01, Vol.56 (1), p.1-4
Main Authors: Yamazaki, Katsumi, Sato, Yoshito, Domenjoud, Mathieu, Daniel, Laurent
Format: Article
Language:English
Subjects:
Axial stress
Core loss
Electromagnetism
Engineering Sciences
Finite element method
Finite-element methods
Hysteresis loops
Hysteresis models
Iron
Loss measurement
losses
Magnetic cores
Magnetic hysteresis
Magnetism
Materials
Permanent magnets
permanent-magnet machines
Steel
Stress
Stress measurement
Time stepping finite elements
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Description
Summary:This article describes a method to calculate iron loss of permanent-magnet machines by considering the hysteresis loops affected by multi-axial stress. A simple hysteresis model is introduced and modified by reluctivity and hysteresis loss increase ratios, which can be determined by core material experiments under uniaxial stress. This model is coupled with time-stepping finite-element analysis. The validity of the proposed method is confirmed by the core material experiments under multi-axial stress and measured characteristics of permanent-magnet machines. It is clarified that the accuracy of the proposed method is acceptable.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2019.2950727