Torque Optimization in Synchronous Reluctance Motors Using Response Surface Methodology

Document Type : Research Paper

Authors

1 Department of Electrical Engineering, Faculty of Engineering, Lorestan University, Khorramabad, Iran

2 Electrical Machine Research Group, ACECR, Khajeh Nasir Toosi University of Technology Branch, Tehran, Iran

Abstract

One of the main challenges in electromagnetic design of synchronous reluctance motors (SynRMs) is to improve the quality of produced electromagnetic torque. In this paper, a new technique is presented for rotor optimization of SynRMs with the configuration of transversally laminated anisotropic (TLA) based on the response surface methodology (RSM) to reduce the torque ripple while maintaining the average value of produced electromagnetic torque. In this method, the radial position and thickness in the middle region of rotor flux barriers (FBs) with hyperbolic shape are optimized to achieve the minimum torque ripple and maximized average torque. To this end, two rotor topologies including 3 and 4 FBs per pole are considered for the analyzed SynRM. The optimization process is then started for each topology through designing the experiments in predefined space by using the RSM and conducting them by using the finite element method (FEM). The analysis of respone surface design is then done through constructing the polynomial regression for objective functions to study the effect of parameters on the torque ripple and the average torque. The optimal results which are very sensitive to geometry variations show a significant reduction in torque ripple without decreasing the average torque.     

Keywords

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References

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Journal of Modeling in Engineering
Volume 24, Issue 84
In Progress
March 2026
Pages 59-70

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History

  • Receive Date: 27 September 2024
  • Revise Date: 16 May 2025
  • Accept Date: 31 May 2025

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