• The Transactions of The Korean Institute of Electrical Engineers
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• v.66 no.12
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• pp.1725-1731
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• 2017

In hysteresis simulation, the Preisach model is most widely used as the reliability. However, since the first-order transition curves used in the conventional Preisach model are very inconvenient for actual measurement, many researches have been made to simplify them. In this study, the minor loops obtained along the initial magnetization curve are used to obtain the Everett function used in the Preisach model. In other words, The Everett table is constructed by using the minor loops, and are applied to the magnetization dependent Preisach model to reconstruct the Everett table. In order to minimize the error, the spline interpolation method is used to complete the final Everett table and the hysteresis loop simulation is performed with the Everett table. Furthermore, it is applied to the inductor analysis to perform not only sinusoidal wave and square wave drive but also PWM wave drive considering hysteresis. The validity of the proposed method is confirmed by comparison with simulation and experiment.

• Proceedings of the Korean Magnestics Society Conference
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• 1996.10a
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• pp.108-109
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• 1996

• The Transactions of the Korean Institute of Electrical Engineers B
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• v.48 no.3
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• pp.118-123
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• 1999

This paper describes the finite element procedure including the magnetic hysteresis phenomena. The magnetization-dependent Preisach model is employed to simulate the magnetic hysteresis and applied to each elements. Magnetization is calculated by the Fibonacci search method for the applied field in the implementation of the magnetization-dependent model. This can calculate the magnetization very accurately with small iteration numbers. The magnetic field intensity and the magnetization corresponding to the magnetic flux density obtained by the finite element analysis(FEA) are computed at the same time under the condition that these balues must satisfy the constitutive equation. In order to reduce the total calculation cost, pseudo-permeability is used for the input for the FEA. It is found that the presented method is very useful in combining the hysteresis model with the finite element method.

• Journal of the Korean Magnetics Society
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• v.7 no.2
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• pp.109-116
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• 1997

This paper describes an implementation of the rotational hysteresis analysis using the finite element method and a vector hysteresis model. The vector hysteresis model is extended from the magnetization-dependent Preisach model. The magnetization of each element is calculated for a given history of the rotating field. The lagging angle and the magnitude of the magnetization for an applied field are evaluated. The experimental results show that the magnetization characteristics of the magnetic materials under the rotating field can be analyzed accurately by the proposed method.

• Proceedings of the KIEE Conference
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• 1995.11a
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• pp.15-17
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• 1995

Hysteresis motor is a synchronous machine which has simple structure and self-start characteristic but also has serious difficulties in numerical analysis. In this study, a finite element analysis for hysteresis motor considering the hysteresis characteristics is presented. The hysteresis model is the magnetization-dependent Preisach model which explains hysteresis phenomena very well. From this, we estimate the instantaneous torque, average torque and hysteresis loss of the rotor, considering slot and winding distribution.

• Proceedings of the KIEE Conference
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• 1992.07b
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• pp.580-583
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• 1992

In calculating the hysteresis loops with the Preisach model for ferromagnetism, Everett function is used generally. Because the Everett function is usually given as a table of the lattice-shaped, it is very difficult to directly obtain the Everest table from the data. Therefore this makes some defects in the calculation processes or the accuracy of the results. In this study, using the data sufficiently obtained from the experiment by drawing up the Everett table in the triangle-shaped, and applying the generalized hysteresis model in which the magnetization is depend on the sum of the applied magnetic field and the molecular field, it is shown that our proposal is acceptible in calculating the hysteresis processes.