Investigation of the Temperature Field Distribution in an EI Type Iron-Cored Coil Using 3D FEM Modeling at Different Load Conditions

Denitsa Darzhanova and Ilona Iatcheva ()
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Denitsa Darzhanova: Department of Electrical Measurements, Technical University of Sofia, 1756 Sofia, Bulgaria
Ilona Iatcheva: Department of Fundamentals of Electrical Engineering, Technical University of Sofia, 1756 Sofia, Bulgaria

Energies, 2023, vol. 16, issue 12, 1-13

Abstract: In this present paper, results for the temperature distribution in electromagnetic construction in the form of coil coupled with EI-type ferromagnetic core are presented. This construction is typical for small electric transformers (AC operation mode) or chokes—DC or AC operation mode. Investigation has been provided using 3D finite element method computer modeling at various load conditions to simulate power dissipation both in the coil and the core volumes. The results obtained were used to calculate overall thermal resistances toward ambient free air and the thermal resistance between the coil and the core. These results show the important role the thermal resistance between the coil and the core may play for both steady-state and transient device operation.

Keywords: transformer; temperature field; 3D FEM modeling; thermal resistances (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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