Electromagnetic Torque Analysis of SRM 12/8 by Rotor/Stator Pole Angle


  • D. B. Minh School of Electrical Engineering, Hanoi University of Science and Technology, Vietnam
  • L. D. Hai School of Electrical Engineering, Hanoi University of Science and Technology, Vietnam | College of Electromechanical and Civil Engineering, Vietnam National University of Forestry, Vietnam
  • T. L. Anh Hanoi University of Industry, Vietnam
  • V. D. Quoc Department of Electrical and Electronic Equipment, School of Electrical Engineering, Hanoi University of Science and Technology, Vietnam


This paper presents the harmonic torque reduction by the different rotor pole angles of a three-phase 12/8 switched reluctance motor via an analytical model and simulation method. Improving torque performance by stator and rotor angles was applied for three-phase switched reluctance motor at stator pole/rotor pole ratios of 6/4, 8/12, 18/12, and 24/18. The average torque and the torque ripple effect by stator and rotor pole embrace have been recently studied in many projects. Due to the fact that leakage flux, flux density, and inductance are affected by the stator and rotor pole angles non-linear and linear leakage flux curves occur. Many stator and rotor pole angle combinations for the three-phase switched reluctance motor have already been done via a finite element method. In this paper, turn-on and turn-off angles will be figured based on stator and rotor pole embraces.


Switched Reluctance Motor (SRM), pole arcs, torque, Finite Element Method (FEM)


Download data is not yet available.


R. M. Azhagar and A. Kavitha, "Effect of rotor geometry on Peak and Average Torque of direct drive External-Rotor Synchronous Reluctance Motor (Ex-R SynRM) in comparison with Switched Reluctance Motor for low speed domestic application," in 2017 IEEE International Magnetics Conference (INTERMAG), Dublin, UK, Apr. 2017, pp. 1–2. DOI: https://doi.org/10.1109/INTMAG.2017.8007641

J. Han, B. Ge, K. Zhang, Y. Wang, and C. Wang, "Influence of Control and Structure Parameters on the Starting Performance of a 12/8 Pole Switched Reluctance Motor," Energies, vol. 13, no. 14, Jan. 2020, Art. no. 3744. DOI: https://doi.org/10.3390/en13143744

N. K. Sheth and K. R. Rajagopal, "Optimum pole arcs for a switched reluctance motor for higher torque with reduced ripple," IEEE Transactions on Magnetics, vol. 39, no. 5, pp. 3214–3216, Sep. 2003. DOI: https://doi.org/10.1109/TMAG.2003.816151

M. Yildirim and H. Kurum, "Influence of Poles Embrace on In-Wheel Switched Reluctance Motor Design," in 2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC), Budapest, Hungary, Aug. 2018, pp. 562–567. DOI: https://doi.org/10.1109/EPEPEMC.2018.8521859

A. Tap, L. Xheladini, T. Asan, M. Imeryuz, M. Yilmaz, and L. T. Ergene, "Effects of the rotor design parameters on the torque production of a PMaSynRM for washing machine applications," in 2017 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) 2017 Intl Aegean Conference on Electrical Machines and Power Electronics (ACEMP), Brasov, Romania, May 2017, pp. 370–375. DOI: https://doi.org/10.1109/OPTIM.2017.7974998

R. Krishnan, Switched Reluctance Motor Drives: Modeling, Simulation, Analysis, Design, and Applications, 1st ed. Boca Raton, FL, USA: CRC Press, 2001.

Z. Yueying, Y. Chuantian, Y. Yuan, W. Weiyan, and Z. Chengwen, "Design and optimisation of an In-wheel switched reluctance motor for electric vehicles," IET Intelligent Transport Systems, vol. 13, no. 1, Jan. 2019. DOI: https://doi.org/10.1049/iet-its.2018.5097

A. Siadatan, M. Roohisankestani, and S. Farhangian, "Design and Simulation of a new Switched Reluctance Motor with changes in the shape of stator and rotor in order to reduce torque ripple and comparison with the conventional motor," in 2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), Amalfi, Italy, Jun. 2018, pp. 353–358. DOI: https://doi.org/10.1109/SPEEDAM.2018.8445245

O. M. Al-Barbarawi, "Improving Performance of the Braking Process, and Analysis Torque-Speed Characteristics of the Induction Motor," Engineering, Technology & Applied Science Research, vol. 8, no. 6, pp. 3585–3591, Dec. 2018. DOI: https://doi.org/10.48084/etasr.2325

V. D. Quoc, "Robust Correction Procedure for Accurate Thin Shell Models via a Perturbation Technique," Engineering, Technology & Applied Science Research, vol. 10, no. 3, pp. 5832–5836, Jun. 2020. DOI: https://doi.org/10.48084/etasr.3615

V. D. Quoc, "Accurate Magnetic Shell Approximations with Magnetostatic Finite Element Formulations by a Subdomain Approach," Engineering, Technology & Applied Science Research, vol. 10, no. 4, pp. 5953–5957, Aug. 2020. DOI: https://doi.org/10.48084/etasr.3678


How to Cite

D. B. Minh, L. D. Hai, T. L. Anh, and V. D. Quoc, “Electromagnetic Torque Analysis of SRM 12/8 by Rotor/Stator Pole Angle”, Eng. Technol. Appl. Sci. Res., vol. 11, no. 3, pp. 7187–7190, Jun. 2021.


Abstract Views: 173
PDF Downloads: 86

Metrics Information
Bookmark and Share

Most read articles by the same author(s)