Fast and Accurate Finite Element-Based and Magnetic Equivalent Circuit Models for Magnetically Controlled Transformers

Amr A. Abbas; Ahmed Hemeida; Camilo Suarez; Wilmar Martinez; Anouar Belahcen; Paavo Rasilo

doi:10.1109/IECON58223.2025.11221927

Fast and Accurate Finite Element-Based and Magnetic Equivalent Circuit Models for Magnetically Controlled Transformers

Amr A. Abbas
, Ahmed Hemeida
, Camilo Suarez
, Wilmar Martinez
, Anouar Belahcen
, Paavo Rasilo

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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Abstract

This paper presents a finite element-based dynamic modeling framework for magnetically controlled transformers. The model relies on pre-solving multiple static finite element simulations and storing the resulting windings flux linkages as functions of primary, secondary, and DC biasing currents in lookup-tables. Material non-linearities and geometry 3-D effects are inherently captured within the model. This flexible modeling approach allows to model transformers with different pre-magnetization methods. Additionally, a parameterized magnetic equivalent circuit model is developed. It is shown that the model of the control winding supply affects the simulation results. Both models are validated against the results from a dual active bridge converter, showing a good agreement with the experimental measurements.

Original language	English
Title of host publication	IECON 2025 – 51st Annual Conference of the IEEE Industrial Electronics Society
Publisher	IEEE
Number of pages	6
ISBN (Electronic)	979-8-3315-9681-1
ISBN (Print)	979-8-3315-9682-8
DOIs	https://doi.org/10.1109/IECON58223.2025.11221927
Publication status	Published - 2025
Publication type	A4 Article in conference proceedings
Event	Annual Conference of the IEEE Industrial Electronics Society - Madrid, Spain Duration: 14 Oct 2025 → 17 Oct 2025

Publication series

Name	Proceedings of the Annual Conference of the IEEE Industrial Electronics Society
ISSN (Print)	1553-572X
ISSN (Electronic)	2577-1647

Conference

Conference	Annual Conference of the IEEE Industrial Electronics Society
Country/Territory	Spain
City	Madrid
Period	14/10/25 → 17/10/25

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Publication forum level 1

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10.1109/IECON58223.2025.11221927

Fast and Accurate Finite Element-Based and Magnetic Equivalent Circuit Models for Magnetically Controlled Transformers
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https://urn.fi/URN:NBN:fi:tuni-2025112711003Licence: Unspecified

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Abbas, A. A., Hemeida, A., Suarez, C., Martinez, W., Belahcen, A., & Rasilo, P. (2025). Fast and Accurate Finite Element-Based and Magnetic Equivalent Circuit Models for Magnetically Controlled Transformers. In IECON 2025 – 51st Annual Conference of the IEEE Industrial Electronics Society (Proceedings of the Annual Conference of the IEEE Industrial Electronics Society). IEEE. https://doi.org/10.1109/IECON58223.2025.11221927

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title = "Fast and Accurate Finite Element-Based and Magnetic Equivalent Circuit Models for Magnetically Controlled Transformers",

abstract = "This paper presents a finite element-based dynamic modeling framework for magnetically controlled transformers. The model relies on pre-solving multiple static finite element simulations and storing the resulting windings flux linkages as functions of primary, secondary, and DC biasing currents in lookup-tables. Material non-linearities and geometry 3-D effects are inherently captured within the model. This flexible modeling approach allows to model transformers with different pre-magnetization methods. Additionally, a parameterized magnetic equivalent circuit model is developed. It is shown that the model of the control winding supply affects the simulation results. Both models are validated against the results from a dual active bridge converter, showing a good agreement with the experimental measurements.",

author = "Abbas, \{Amr A.\} and Ahmed Hemeida and Camilo Suarez and Wilmar Martinez and Anouar Belahcen and Paavo Rasilo",

year = "2025",

doi = "10.1109/IECON58223.2025.11221927",

language = "English",

isbn = "979-8-3315-9682-8",

series = "Proceedings of the Annual Conference of the IEEE Industrial Electronics Society",

publisher = "IEEE",

booktitle = "IECON 2025 – 51st Annual Conference of the IEEE Industrial Electronics Society",

address = "United States",

note = "Annual Conference of the IEEE Industrial Electronics Society ; Conference date: 14-10-2025 Through 17-10-2025",

}

Abbas, AA, Hemeida, A, Suarez, C, Martinez, W, Belahcen, A & Rasilo, P 2025, Fast and Accurate Finite Element-Based and Magnetic Equivalent Circuit Models for Magnetically Controlled Transformers. in IECON 2025 – 51st Annual Conference of the IEEE Industrial Electronics Society. Proceedings of the Annual Conference of the IEEE Industrial Electronics Society, IEEE, Annual Conference of the IEEE Industrial Electronics Society, Madrid, Spain, 14/10/25. https://doi.org/10.1109/IECON58223.2025.11221927

Fast and Accurate Finite Element-Based and Magnetic Equivalent Circuit Models for Magnetically Controlled Transformers. / Abbas, Amr A.; Hemeida, Ahmed; Suarez, Camilo et al.
IECON 2025 – 51st Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2025. (Proceedings of the Annual Conference of the IEEE Industrial Electronics Society).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Fast and Accurate Finite Element-Based and Magnetic Equivalent Circuit Models for Magnetically Controlled Transformers

AU - Abbas, Amr A.

AU - Hemeida, Ahmed

AU - Suarez, Camilo

AU - Martinez, Wilmar

AU - Belahcen, Anouar

AU - Rasilo, Paavo

PY - 2025

Y1 - 2025

N2 - This paper presents a finite element-based dynamic modeling framework for magnetically controlled transformers. The model relies on pre-solving multiple static finite element simulations and storing the resulting windings flux linkages as functions of primary, secondary, and DC biasing currents in lookup-tables. Material non-linearities and geometry 3-D effects are inherently captured within the model. This flexible modeling approach allows to model transformers with different pre-magnetization methods. Additionally, a parameterized magnetic equivalent circuit model is developed. It is shown that the model of the control winding supply affects the simulation results. Both models are validated against the results from a dual active bridge converter, showing a good agreement with the experimental measurements.

AB - This paper presents a finite element-based dynamic modeling framework for magnetically controlled transformers. The model relies on pre-solving multiple static finite element simulations and storing the resulting windings flux linkages as functions of primary, secondary, and DC biasing currents in lookup-tables. Material non-linearities and geometry 3-D effects are inherently captured within the model. This flexible modeling approach allows to model transformers with different pre-magnetization methods. Additionally, a parameterized magnetic equivalent circuit model is developed. It is shown that the model of the control winding supply affects the simulation results. Both models are validated against the results from a dual active bridge converter, showing a good agreement with the experimental measurements.

U2 - 10.1109/IECON58223.2025.11221927

DO - 10.1109/IECON58223.2025.11221927

M3 - Conference contribution

SN - 979-8-3315-9682-8

T3 - Proceedings of the Annual Conference of the IEEE Industrial Electronics Society

BT - IECON 2025 – 51st Annual Conference of the IEEE Industrial Electronics Society

PB - IEEE

T2 - Annual Conference of the IEEE Industrial Electronics Society

Y2 - 14 October 2025 through 17 October 2025

ER -

Abbas AA, Hemeida A, Suarez C, Martinez W, Belahcen A, Rasilo P. Fast and Accurate Finite Element-Based and Magnetic Equivalent Circuit Models for Magnetically Controlled Transformers. In IECON 2025 – 51st Annual Conference of the IEEE Industrial Electronics Society. IEEE. 2025. (Proceedings of the Annual Conference of the IEEE Industrial Electronics Society). doi: 10.1109/IECON58223.2025.11221927

Fast and Accurate Finite Element-Based and Magnetic Equivalent Circuit Models for Magnetically Controlled Transformers

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