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Hysteresis Modeling Based on Symmetric Minor Loops

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3 Author(s)
E. Dlala ; Lab. of Electromech., Helsinki Univ. of Technol., Espoo, Finland ; J. Saitz ; A. Arkkio

This paper presents a method for modeling symmetric minor loops in hysteretic magnetic media. The method employs symmetric minor loops combined with certain segments of the initial magnetization curve to identify the classical Preisach model. The proposed method is simple and effective. It exploits the symmetric positions of the reversal points lying on the initial magnetization curve and, therefore, guarantees monotonic symmetric change of the Preisach model input used in the calculation of the Everett function. A further advantage of the method is that it permits the use of the numerical Preisach model and omits the need of higher-order reversal curves. The method is applied to the prediction of symmetric minor loops of semi-hard magnetic material by using the classical scalar Preisach model. The simulation and measurement results show the high accuracy of the method and validate the proposed approach.

Published in:

IEEE Transactions on Magnetics  (Volume:41 ,  Issue: 8 )