Multi-Object Optimization of the Switched Reluctance Motor

  • Choi, Jae-Hak (Dept. of Electrical Engineering, Hanyang University) ;
  • Kim, Sol (Dept. of Electrical Engineering, Hanyang University) ;
  • Kim, Yong-Su (Dept. of Electrical Engineering, Hanyang University) ;
  • Lee, Sang-Don (Dept. of Electrical Engineering, Wonju National College) ;
  • Lee, Ju (Dept. of Electrical Engineering, Hanyang University)
  • Published : 2004.12.01


In this paper, multi-object optimization based on a progressive quadratic response surface method (PQRSM) and a time stepping finite element method (FEM) is proposed. The new PQRSM and FEM are able to decide optimal geometric and electric variables of the switched reluctance motor (SRM) with two objective functions: torque ripple minimization and average torque maximization. The result of the optimum design for SRM demonstrates improved performance of the motor and enhanced relationship between torque ripple and average torque.


  1. T. J. E. Miller, Switched Reluctance Motors and their control, Hillsboro, OH: Magna Physics Publishing and London: Oxford University Press, 1993, pp. 1-23
  2. W. F. Ray, P. J. Lawrenson, R. M. Davis, J. M. Stephenson, N. N. Fulton, and R. J. Blake, ‘High performance switched reluctance brushless drives,’ IEEE Trans. Ind. Applicat., vol.IA-22, no. 4, pp. 722-730, 1986
  3. Y. Ohdachi and Y. Kawase, ‘Optimum Design of Switched Reluctance Motors using Dynamic Finite Element Analysis,’ IEEE Trans. on Magn., vol. 33, pp. 2033-2036, March 1997
  4. Funda Şahin, H. Bülent Ertan, and Kemal Leblebicioğlu, ‘Optimum Geometry for Torque Ripple Minimization of Switched Reluctance Motors,’ IEEE Trans. on Energy conversion, vol. 15, no. 1, pp. 30-39, March 2000
  5. S. Brisset and P. Brochet, ‘Optimization of Switched Reluctance Motors using Deterministic Methods with Static and Dynamic Finite Element Simulation,’ IEEE Trans. on Magn., vol. 34, pp. 2853-2856, September 1998
  6. Y. –H. Kim, J, -H. Choi, S. –I. Jung, Y. –D. Chun, J. Lee, M. –S. Chu, K. –J. Hong, and D. -H. Choi, 'Optimal design of switched reluctance motor using two-dimensional finite element method,' Journal of Applied Physics, vol. 91, no. 10, pp. 6967, May 2002
  7. Jasbir S. Arora, Introduction To Optimum Design, Mcgraw-Hill International Editions, 1994
  8. K. -J. Hong, Ph. D. Thesis, ‘Trust Region Managed Sequential Approximate Optimization with Response Surface Modeling,’ Hanyang University, Korea, 2001
  9. K. -J. Hong, M. -S. Kim, and D. -H. Choi, 'Efficient Approximation Method for Constructing Quadratic Response Surface Model,' KSME International Journal, vol. 15, no. 7, pp. 876, 2001
  10. Fletcher, R., Practical Method of Optimization, John Wiley & Sons, Chichester, 1987