Comprehensive Analysis of Rotor Geometric Parameters and Skewing Methods in Flux-Switching Generators

Tuğberk Özmen; Tayfun Işıkelekoğlu; Said Tunahan Durmaz; Batı Eren Ergun; Nevzat Onat; Mehmet Onur Gulbahce

doi:10.5152/tepes.2025.25003

Comprehensive Analysis of Rotor Geometric Parameters and Skewing Methods in Flux-Switching Generators

Abstract

Flux-switching generators (FSGs) are widely used in wind turbine applications, particularly within microgrids, due to their unique structural and operational advantages. However, the salient pole structures of their stator and rotor teeth result in high torque ripple, elevated harmonic content, and increased magnetic flux density in the stator and rotor teeth. These issues necessitate optimization of the machine’s design parameters. This study investigates the effects of rotor pole skew (delta) and coil-pole pitch ratio (embrace) on the performance of a 260 W FSG operating at 1200 rpm and 200 Hz. A multi-slice skewing method was applied to the rotor to analyze its impact on average torque, torque ripple, and efficiency. The results reveal that variations in pole skew and coil-pole pitch ratio significantly affect torque, flux linkage, and induced voltage while also reducing magnetic stresses. Despite these improvements, the prominence of the second harmonic limits the effectiveness of the skewing angle on generator output parameters. Additionally, the influence of the number of rotor slices on output performance and manufacturing complexity was examined.

Keywords

Supporting Institution

This work was supported in part by the 3501 Career Development Program of the Scientific and Technological Research Council of Turkey (TUBITAK) under Grant 124E306.

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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

Tayfun Işıkelekoğlu This is me
Türkiye

Said Tunahan Durmaz This is me
Türkiye

Batı Eren Ergun
0009-0002-5803-8485
Türkiye

Nevzat Onat
0000-0002-2244-4441
Türkiye

Mehmet Onur Gulbahce
0000-0002-6689-8445
Türkiye

Publication Date

October 30, 2025

Submission Date

January 15, 2025

Acceptance Date

March 7, 2025

Published in Issue

Year 2025 Volume: 5 Number: 3

DOI

https://doi.org/10.5152/tepes.2025.25003

IZ

https://izlik.org/JA59BR23DC

Cite

RIS / Bibtex

APA

Özmen, T., Işıkelekoğlu, T., Durmaz, S. T., Ergun, B. E., Onat, N., & Gulbahce, M. O. (2025). Comprehensive Analysis of Rotor Geometric Parameters and Skewing Methods in Flux-Switching Generators. Turkish Journal of Electrical Power and Energy Systems, 5(3), 197-205. https://doi.org/10.5152/tepes.2025.25003

AMA

1.Özmen T, Işıkelekoğlu T, Durmaz ST, Ergun BE, Onat N, Gulbahce MO. Comprehensive Analysis of Rotor Geometric Parameters and Skewing Methods in Flux-Switching Generators. TEPES. 2025;5(3):197-205. doi:10.5152/tepes.2025.25003

Chicago

Özmen, Tuğberk, Tayfun Işıkelekoğlu, Said Tunahan Durmaz, Batı Eren Ergun, Nevzat Onat, and Mehmet Onur Gulbahce. 2025. “Comprehensive Analysis of Rotor Geometric Parameters and Skewing Methods in Flux-Switching Generators”. Turkish Journal of Electrical Power and Energy Systems 5 (3): 197-205. https://doi.org/10.5152/tepes.2025.25003.

EndNote

Özmen T, Işıkelekoğlu T, Durmaz ST, Ergun BE, Onat N, Gulbahce MO (October 1, 2025) Comprehensive Analysis of Rotor Geometric Parameters and Skewing Methods in Flux-Switching Generators. Turkish Journal of Electrical Power and Energy Systems 5 3 197–205.

IEEE

[1]T. Özmen, T. Işıkelekoğlu, S. T. Durmaz, B. E. Ergun, N. Onat, and M. O. Gulbahce, “Comprehensive Analysis of Rotor Geometric Parameters and Skewing Methods in Flux-Switching Generators”, TEPES, vol. 5, no. 3, pp. 197–205, Oct. 2025, doi: 10.5152/tepes.2025.25003.

ISNAD

Özmen, Tuğberk - Işıkelekoğlu, Tayfun - Durmaz, Said Tunahan - Ergun, Batı Eren - Onat, Nevzat - Gulbahce, Mehmet Onur. “Comprehensive Analysis of Rotor Geometric Parameters and Skewing Methods in Flux-Switching Generators”. Turkish Journal of Electrical Power and Energy Systems 5/3 (October 1, 2025): 197-205. https://doi.org/10.5152/tepes.2025.25003.

JAMA

1.Özmen T, Işıkelekoğlu T, Durmaz ST, Ergun BE, Onat N, Gulbahce MO. Comprehensive Analysis of Rotor Geometric Parameters and Skewing Methods in Flux-Switching Generators. TEPES. 2025;5:197–205.

MLA

Özmen, Tuğberk, et al. “Comprehensive Analysis of Rotor Geometric Parameters and Skewing Methods in Flux-Switching Generators”. Turkish Journal of Electrical Power and Energy Systems, vol. 5, no. 3, Oct. 2025, pp. 197-05, doi:10.5152/tepes.2025.25003.

Vancouver

1.Tuğberk Özmen, Tayfun Işıkelekoğlu, Said Tunahan Durmaz, Batı Eren Ergun, Nevzat Onat, Mehmet Onur Gulbahce. Comprehensive Analysis of Rotor Geometric Parameters and Skewing Methods in Flux-Switching Generators. TEPES. 2025 Oct. 1;5(3):197-205. doi:10.5152/tepes.2025.25003