Document Type: Original Research Paper


University of Kashan


Background and Objectives: One of the main drawbacks of switched reluctance motors (SRM) is high acoustic noise and significant research has been done to reduce it. In addition, reduction of temperature rise within the machine is usually considered as one of the most important goals of design. Therefore, a shape design method is introduced in the present paper for the SRM by which both heat transfer and acoustic noise are improved. 
Methods: For evaluation of the proposed shape design method, a simulation model based on finite element method (FEM) is also developed to predict both the temperature rise within the machine and the produced noise. The simulation model is created using ANSYS finite element (FE) package and it is build up totally as a parametric model in ANSYS parametric design language. Since the convection heat transfer coefficients depend on the temperature rise, they are determined in the developed thermal model based on an iterative algorithm.
Results: The proposed shape design method is applied to a typical 8/6 SRM and simulation results including temperature distribution in various sections of the machine, displacement of stator and sound pressure level (SPL) are presented.
Conclusion: Based on the obtained simulation results, it is illustrated that the temperature rise and the noise of the SRM could be improved significantly using the introduced shape design method.


Main Subjects

[1] Y. Hu, C. Gan, S. Hu, W. Cao, X. Wang, S. Finney, “Winding-centre-tapped switched reluctance motor drive for multi-source charging in electric vehicle applications,” IET Power Electron., 8(11): 2067-2075, 2015.

[2]  R. Todd, V. Valdivia, F. J. Bryan, A. Barrado, A. Lazaro, A. J. Forsyth, “Behavioural modelling of a switched reluctance motor drive for aircraft power systems,” IET Electr. Syst. Transp., 4(4): 107-113, 2014.

[3] D. Choi, S. Byun, Y. Cho, “A study on the maximum power control method of switched reluctance generator for wind turbine,” IEEE Trans. Magn., 50(1): 1-4, 2014.

[4] J. P. Hong, K. H. Ha, J. Lee, “Stator pole and yoke design for vibration reduction of switched reluctance motor,” IEEE Trans. Magn., 38(2): 929-932, 2002.

[5] P. Q. Rasmussen, J. H. Andreasen, J. M. Pijanowski, “Structural stator spacers - A solution for noise reduction of switched reluctance motors,” IEEE Trans. Ind. Appl., 40(2): 574-581, 2004.

[6] S. M. Castano, B. Bilgin, E. Fairall, A. Emadi, “Acoustic noise analysis of a high-speed high-power switched reluctance machine: Frame effects,” IEEE Trans. Energy Convers., 31(1): 69-77, 2016.

[7] H. Yang, Y. Lim, H. Kim, “Acoustic noise/vibration reduction of a single-phase SRM using skewed stator and rotor,” IEEE Trans. Ind. Electron., 60(10): 4292-4300, 2013.

[8] C. Gan,  J. Wu,  M. Shen,  S. Yang,  Y. Hu, W. Cao, “Investigation of skewing effects on the vibration reduction of three-phase switched reluctance motors,” IEEE Trans. Magn., 51(9): 1-9, 2015.

[9] K. Kiyota, T. Kakishima, A. Chiba, M. A. Rahman, “Cylindrical rotor design for acoustic noise and windage loss reduction in switched reluctance motor for HEV applications,”  IEEE Trans. Ind. Appl., 52(1): 154-162, 2016.

[10]  S. Inamura, T. Sakai, K. Sawa, “A temperature rise analysis of switched reluctance motor due to the core and copper loss by FEM,” IEEE Trans. Magn., 39(3): 1554-1557, 2003.

[11] K. N. Srinivas, R. Arumugam, “Analysis and characterization of switched reluctance motors: Part 2—Flow, thermal and vibration analyses,” IEEE Trans. Magn., 41(4): 1321-1332, 2005.

[12] J. Faiz, B. Ganji, C. E. Carstensen, K. A. Kasper, R. W. De Doncker, “Temperature rise analysis of switched reluctance motors due to electromagnetic losses,” IEEE Trans. Magn., 45(7): 2927-2934, 2009.

[13] N. Arbab, W. Wang, C. Lin, J. Hearron, B. Fahimi, “Thermal modeling and analysis of a double-stator switched reluctance motor,” IEEE Trans. Energy Convers., 30(3): 1209-1217, 2015.

[14] T. J. E. Miller, “Switched reluctance motor and their control,” Oxford U. K. Clarendon, 1993.

[15] J. Faiz, B. Ganji, C. E. Carstensen, R.W. De Doncker, “Loss prediction in switched reluctance machines using finite element method,” J. Eur. Trans. Electr. Power, 19: 731-748, 2009.

[16] O. Naderi, B. Ganji, “Design optimization of switched reluctance motor for noise reduction,” Engineering Review, 36(3): 293-301, 2016.

[17] J. Li, X. Song, Y. Cho, “Comparison of 12/8 and 6/4 switched reluctance motor: noise and vibration aspects,” IEEE Trans. Magn., 44(11): 4131-4134, 2008.