1-D FEM-Based Approach for Extracting Dimension-Independent Material Properties of Mn-Zn Toroidal Ferrite Cores

Reda Elkhadrawy; Jay Panchal; Timo Tarhasaari; Kari Lahti; Paavo Rasilo

doi:10.1109/TMAG.2022.3187539

1-D FEM-Based Approach for Extracting Dimension-Independent Material Properties of Mn-Zn Toroidal Ferrite Cores

Reda Elkhadrawy, Jay Panchal, Timo Tarhasaari, Kari Lahti, Paavo Rasilo

Electrical Engineering

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Abstract

This article presents a finite element (FE) method (FEM) based approach for identifying the dimension-independent magnetic and dielectric properties of Mn-Zn toroidal ferrite cores. Two 1-D axisymmetric FE models are utilized for solving the full-wave electromagnetic field equations in a toroidal ferrite core using either the electric field strength (E) or the magnetic field strength (H) as the variable. Impedance measurements are performed for the toroidal cores over a frequency range of 10 kHz - 10 MHz. The FE models and the impedance measurements are combined with a non-linear least squares algorithm for solving the inverse problem for extracting the dimension-independent values of the complex permeability and complex permittivity. The extracted permeability is validated against the datasheet of the measured samples.

Original language	English
Article number	7201104
Journal	IEEE Transactions on Magnetics
Volume	58
Issue number	9
DOIs	https://doi.org/10.1109/TMAG.2022.3187539
Publication status	Published - 2022
Publication type	A1 Journal article-refereed

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title = "1-D FEM-Based Approach for Extracting Dimension-Independent Material Properties of Mn-Zn Toroidal Ferrite Cores",

abstract = "This article presents a finite element (FE) method (FEM) based approach for identifying the dimension-independent magnetic and dielectric properties of Mn-Zn toroidal ferrite cores. Two 1-D axisymmetric FE models are utilized for solving the full-wave electromagnetic field equations in a toroidal ferrite core using either the electric field strength (E) or the magnetic field strength (H) as the variable. Impedance measurements are performed for the toroidal cores over a frequency range of 10 kHz - 10 MHz. The FE models and the impedance measurements are combined with a non-linear least squares algorithm for solving the inverse problem for extracting the dimension-independent values of the complex permeability and complex permittivity. The extracted permeability is validated against the datasheet of the measured samples.",

author = "Reda Elkhadrawy and Jay Panchal and Timo Tarhasaari and Kari Lahti and Paavo Rasilo",

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T1 - 1-D FEM-Based Approach for Extracting Dimension-Independent Material Properties of Mn-Zn Toroidal Ferrite Cores

AU - Elkhadrawy, Reda

AU - Panchal, Jay

AU - Tarhasaari, Timo

AU - Lahti, Kari

AU - Rasilo, Paavo

PY - 2022

Y1 - 2022

N2 - This article presents a finite element (FE) method (FEM) based approach for identifying the dimension-independent magnetic and dielectric properties of Mn-Zn toroidal ferrite cores. Two 1-D axisymmetric FE models are utilized for solving the full-wave electromagnetic field equations in a toroidal ferrite core using either the electric field strength (E) or the magnetic field strength (H) as the variable. Impedance measurements are performed for the toroidal cores over a frequency range of 10 kHz - 10 MHz. The FE models and the impedance measurements are combined with a non-linear least squares algorithm for solving the inverse problem for extracting the dimension-independent values of the complex permeability and complex permittivity. The extracted permeability is validated against the datasheet of the measured samples.

AB - This article presents a finite element (FE) method (FEM) based approach for identifying the dimension-independent magnetic and dielectric properties of Mn-Zn toroidal ferrite cores. Two 1-D axisymmetric FE models are utilized for solving the full-wave electromagnetic field equations in a toroidal ferrite core using either the electric field strength (E) or the magnetic field strength (H) as the variable. Impedance measurements are performed for the toroidal cores over a frequency range of 10 kHz - 10 MHz. The FE models and the impedance measurements are combined with a non-linear least squares algorithm for solving the inverse problem for extracting the dimension-independent values of the complex permeability and complex permittivity. The extracted permeability is validated against the datasheet of the measured samples.

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DO - 10.1109/TMAG.2022.3187539

M3 - Article

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VL - 58

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 9

M1 - 7201104

ER -

1-D FEM-Based Approach for Extracting Dimension-Independent Material Properties of Mn-Zn Toroidal Ferrite Cores

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