Thermal Analysis of Flux Switching Permanent Magnet Generator

Tuğberk Özmen; Huseyin Engin Gulbahce; Ali Eren Dağ; Altay Arbak; Aliihsan Koca; Mehmet Onur Gulbahce

doi:10.67047/tepes.1897267

Thermal Analysis of Flux Switching Permanent Magnet Generator

Abstract

Flux-switching permanent-magnet (FSPM) generators are gaining prominence in renewable energy applications due to their robust rotor structure and high-power density. However, thermal management remains a critical challenge, as excessive heat can degrade insulation and permanent magnet (PM) properties. This study presents a comprehensive thermal analysis of a 12-slot/10-pole FSPM generator using 3D Computational Fluid Dynamics (CFD) via ANSYS Icepak. Electromagnetic losses, including copper, core, and eddy-current losses, were integrated into the finite-volume formulation to solve for conduction, convection, and radiation effects. Simulation results identify the primary hotspots in the central axial region of the armature windings, reaching a peak steady-state temperature of 78 °C. The rotor and PMs exhibit strong thermal coupling, stabilizing within a range of 69 °C to 78 °C. Transient analysis confirms that all components reach thermal stability after approximately 90 minutes. The findings demonstrate that peak temperatures remain well below the critical limits for NdFeB magnets and Class F insulation, validating the thermal reliability of the proposed design for long-term operation.

Keywords

Supporting Institution

This study was supported by the Scientific and Technological Research Council of Türkiye (TÜBİTAK) 3501- Career Development Program (Project No: 124E306) and Istanbul Technical University (ITU) Scientific Research Projects Unit (BAP) (Project No: MGA-2025-46446).

Project Number

124E306,MGA-2025-46446

Ethical Statement

The author has no conflicts of interest to declare.

Thanks

This study was supported by the Scientific and Technological Research Council of Türkiye (TÜBİTAK) 3501- Career Development Program (Project No: 124E306) and Istanbul Technical University (ITU) Scientific Research Projects Unit (BAP) (Project No: MGA-2025-46446).

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Details

Primary Language

English

Subjects

Electrical Machines and Drives

Journal Section

Research Article

Authors

Tuğberk Özmen
0000-0002-8636-6091
Türkiye

Huseyin Engin Gulbahce This is me
Türkiye

Ali Eren Dağ This is me
Türkiye

Altay Arbak
0000-0002-6825-415X
Türkiye

Aliihsan Koca
0000-0002-6142-9201
Türkiye

Mehmet Onur Gulbahce ^*
0000-0002-6689-8445
Türkiye

Publication Date

June 24, 2026

Submission Date

February 27, 2026

Acceptance Date

May 3, 2026

Published in Issue

Year 2026 Volume: 6 Number: 2

DOI

https://doi.org/10.67047/tepes.1897267

IZ

https://izlik.org/JA32RD64LU

Cite

RIS / Bibtex

APA

Özmen, T., Gulbahce, H. E., Dağ, A. E., Arbak, A., Koca, A., & Gulbahce, M. O. (2026). Thermal Analysis of Flux Switching Permanent Magnet Generator. Turkish Journal of Electrical Power and Energy Systems, 6(2), 115-122. https://doi.org/10.67047/tepes.1897267

AMA

1.Özmen T, Gulbahce HE, Dağ AE, Arbak A, Koca A, Gulbahce MO. Thermal Analysis of Flux Switching Permanent Magnet Generator. TEPES. 2026;6(2):115-122. doi:10.67047/tepes.1897267

Chicago

Özmen, Tuğberk, Huseyin Engin Gulbahce, Ali Eren Dağ, Altay Arbak, Aliihsan Koca, and Mehmet Onur Gulbahce. 2026. “Thermal Analysis of Flux Switching Permanent Magnet Generator”. Turkish Journal of Electrical Power and Energy Systems 6 (2): 115-22. https://doi.org/10.67047/tepes.1897267.

EndNote

Özmen T, Gulbahce HE, Dağ AE, Arbak A, Koca A, Gulbahce MO (June 1, 2026) Thermal Analysis of Flux Switching Permanent Magnet Generator. Turkish Journal of Electrical Power and Energy Systems 6 2 115–122.

IEEE

[1]T. Özmen, H. E. Gulbahce, A. E. Dağ, A. Arbak, A. Koca, and M. O. Gulbahce, “Thermal Analysis of Flux Switching Permanent Magnet Generator”, TEPES, vol. 6, no. 2, pp. 115–122, June 2026, doi: 10.67047/tepes.1897267.

ISNAD

Özmen, Tuğberk - Gulbahce, Huseyin Engin - Dağ, Ali Eren - Arbak, Altay - Koca, Aliihsan - Gulbahce, Mehmet Onur. “Thermal Analysis of Flux Switching Permanent Magnet Generator”. Turkish Journal of Electrical Power and Energy Systems 6/2 (June 1, 2026): 115-122. https://doi.org/10.67047/tepes.1897267.

JAMA

1.Özmen T, Gulbahce HE, Dağ AE, Arbak A, Koca A, Gulbahce MO. Thermal Analysis of Flux Switching Permanent Magnet Generator. TEPES. 2026;6:115–122.

MLA

Özmen, Tuğberk, et al. “Thermal Analysis of Flux Switching Permanent Magnet Generator”. Turkish Journal of Electrical Power and Energy Systems, vol. 6, no. 2, June 2026, pp. 115-22, doi:10.67047/tepes.1897267.

Vancouver

1.Tuğberk Özmen, Huseyin Engin Gulbahce, Ali Eren Dağ, Altay Arbak, Aliihsan Koca, Mehmet Onur Gulbahce. Thermal Analysis of Flux Switching Permanent Magnet Generator. TEPES. 2026 Jun. 1;6(2):115-22. doi:10.67047/tepes.1897267