A Modified Takács Model to Formulate the Anisotropic Behavior of Grain-Oriented Laminations

A Modified Takács Model to Formulate the Anisotropic Behavior of Grain-Oriented Laminations

It is essential to consider the anisotropic behavior of soft-magnetic materials to accurately estimate the core losses in the machine parts, wherein the direction of the magnetic field is a function of time and space. At T joints of transformers and tooth-yoke joints of rotating machines, the direct...

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Bibliographic Details
Published in:IEEE transactions on magnetics Vol. 60; no. 10; pp. 1 - 8
Main Authors: Kanakgiri, Krishna, Varier, Sidharth, Ram, B. Sai, Unniachanparambil, Greeshma Mohan, Kulkarni, S. V.
Format: Journal Article
Language:English
Published: New York IEEE 01-10-2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Anisotropic
Computational modeling
Core loss
Grain orientation
grain-oriented (GO) materials
Hyperbolic model
Hysteresis
magnetic anisotropy
Magnetic fields
Magnetic flux
Magnetic hysteresis
Magnetic materials
Magnetic properties
mathematical modeling
Mathematical models
Perpendicular magnetic anisotropy
Rotating machinery
Rotating machines
Soft magnetic materials
Takács model
Tee joints
Time dependence
Transformers
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Summary:It is essential to consider the anisotropic behavior of soft-magnetic materials to accurately estimate the core losses in the machine parts, wherein the direction of the magnetic field is a function of time and space. At T joints of transformers and tooth-yoke joints of rotating machines, the direction of magnetic fields changes as a function of time. Directional dependency of magnetic properties results in additional losses. Various formulations to model the anisotropic behavior of hysteresis characteristics and corresponding losses of soft-magnetic materials are available in the literature. The Takács model is a computationally efficient mathematical formulation to model the hysteresis behavior. In this work, an analytical extension to the Takács model is proposed to formulate the anisotropic behavior of these materials. The variation of the model parameters with direction is studied, and their directional dependencies are formulated using suitable functions. The anisotropic behavior of the grain-oriented (GO) materials along arbitrary directions is investigated using the proposed approach, and it is found to be in agreement with measurements. This model can be used to formulate the complicated magnetic behavior at joints in transformers and electrical machines.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2024.3446893