Optimized design and finite element analysis of a four-phase 8/6 switched reluctance motor





Finite element analysis; Iterative method; Switched reluctance motor; Motor design.


The switched reluctance motor (SRM) has been considered a viable alternative to replace the classic electric motors in applications that require variable speed drives. This motor is robust, has a simple construction and the advantage of having a rotor that doesn’t need windings or permanent magnets to operate. In this paper, a four-phase 8/6 SRM is designed in order to replace a three-phase induction motor (IM), using the same frame available. In the design methodology adopted, the mechanical data of the three-phase IM frame are used as initial parameters for calculus of the SRM dimensions. The choice of the SRM’s pole arc angles is optimized by the finite elements analysis (FEA). Furthermore, the FEA simulations allows the visualization of the magnetic flux distribution in the SRM structure and the gathering of important data such as the inductance and flux linkage profiles, and also the designed motor’s torque. The largest relative error obtained for the magnetic flux density in the motor core was 1.69% and the SRM’s resulting torque was very close to the one required initially. The presented results validate the designed prototype and consolidate the design methodology used.


Ahn, J. W., & Lukman, G. F. (2018). Switched reluctance motor: Research trends and overview. CES Transactions on Electrical Machines and Systems, 2(4), 339-347. 10.30941/CESTEMS.2018.00043

Bilgin, B., & Emadi, A. (2018). Electric motor industry and switched reluctance machines. In Switched Reluctance Motor Drives (pp. 1-33). CRC Press.

Castellini, L., Lucidi, S., & Villani, M. (2015). Design optimization of switched reluctance motor for aerospace application. 2015 IEEE International Electric Machines & Drives Conference (IEMDC), 1678-1682. 10.1109/IEMDC.2015.7409289

Chiba, A., & Kiyota, K. (2015). Review of research and development of switched reluctance motor for hybrid electrical vehicle. 2015 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD), 127-131. 10.1109/WEMDCD.2015.7194520

Howey, B., & Li, H. (2018). Operational principles and modeling of switched reluctance machines. In Switched Reluctance Motor Drives (pp. 123-181). CRC Press.

Hutton, D. V. (2004). Basic concepts of the finite element method. In Fundamentals of Finite Element Analysis (pp. 1-18). McGraw Hill.

Jiang, W. (2016). Three-phase 24/16 switched reluctance machine for hybrid electric powertrains: Design and optimization (Doctoral thesis). McMaster University, Hamilton, ON, Canada.

Krishnan, R. (2001). Switched reluctance motor drives: modeling, simulation, analysis, design, and applications. CRC Press.

Lu, M. Z., Jhou, P. H., & Liaw, C. M. (2020). Wind switched-reluctance generator based microgrid with integrated plug-in energy support mechanism. IEEE Transactions on Power Electronics, 36(5), 5496-5511. 10.1109/TPEL.2020.3029528

Mamede, A. C. F. (2016). Projeto iterativo, simulação, análise e otimização de máquina a relutância variável monofásica (Dissertação de mestrado). Universidade Federal de Uberlândia, Uberlândia, MG, Brasil.

Mamede, A. C. F., Camacho, J. R., & Araújo, R. E. (2020). Review of rotary switched reluctance machine design and parameters effect analysis. In Modelling and Control of Switched Reluctance Machines (pp. 59-80). IntechOpen. 10.5772/intechopen.92409

Meeker, D. (2020). Finite element method magnetics (FEMM). Ver. 4.2 User's Manual.

Miller, T. J. E. (Ed.). (2001). Electronic control of switched reluctance machines. Elsevier.

Oliveira, V. S. (2013). Aplicação do método dos elementos finitos 3D na caracterização eletromagnética estática de motores de relutância variável com validação experimental (Dissertação de mestrado). Universidade Federal do Ceará, Fortaleza, CE, Brasil.

Pyrhonen, J., Jokinen, T., & Hrabovcova, V. (2013). Properties of rotating electrical machines. In Design of rotating electrical machines (pp. 479-492). John Wiley & Sons.

Rahmanian, E., Akbari, H., & Sheisi, G. H. (2017). Maximum power point tracking in grid connected wind plant by using intelligent controller and switched reluctance generator. IEEE Transactions on Sustainable Energy, 8(3), 1313-1320. 10.1109/TSTE.2017.2678679

Viajante, G.P., Chaves, E.N., Freitas, M.A., Domingos, J.L., Fidelis, R.T., Gomes, L.C., & Andrade, D.A. (2018). Study and dynamic performance analysis of a switched reluctance generator 8/6 for wind energy application. 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), 1-6. 10.1109/EEEIC.2018.8493726

Vijayraghavan, P. (2001). Design of switched reluctance motors and development of a universal controller for switched reluctance and permanent magnet brushless DC motor drives (Doctoral dissertation). Virginia Polytechnic Institute and State University, Blacksburg, VA, United States of America.

Watthewaduge, G., Sayed, E., Emadi, A., & Bilgin, B. (2020). Electromagnetic modeling techniques for switched reluctance machines: State-of-the-art review. IEEE Open Journal of the Industrial Electronics Society, 1, 218-234. 10.1109/OJIES.2020.3016242

WEG S. A. (2021). W22 Motor Elétrico Trifásico - Catálogo Técnico Mercado Brasil (pp. 36 e 42-43). https://static.weg.net/medias/downloadcenter/h94/h69/WEG-w22-motor-eletrico-trifasico-50023622-brochure-portuguese-web.pdf.



How to Cite

MACHADO, G. de O.; FIDELIS, R. T.; MORAES FILHO, M. J. de; VIAJANTE, G. P.; SILVEIRA, A. W. F. V. da; GOMES, L. C. Optimized design and finite element analysis of a four-phase 8/6 switched reluctance motor . Research, Society and Development, [S. l.], v. 11, n. 2, p. e23411225681, 2022. DOI: 10.33448/rsd-v11i2.25681. Disponível em: https://www.rsdjournal.org/index.php/rsd/article/view/25681. Acesso em: 20 feb. 2024.