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Simple Design Approach for Low Torque Ripple and High Output Torque Synchronous Reluctance Motors

doi: 10.3390/en9110942
handle: 1854/LU-8151282
The rotor design of Synchronous Reluctance Motors (SynRMs) has a large effect on their efficiency, torque density and torque ripple. In order to achieve a good compromise between these three goals, an optimized rotor geometry is necessary. A finite element method (FEM) is a good tool for the optimization. However, the computation time is an obstacle as there are many geometrical parameters to be optimized. The flux-barrier widths and angles are the two most crucial parameters for the SynRM output torque and torque ripple. This paper proposes an easy-to-use set of parametrized equations to select appropriate values for these two rotor parameters. With these equations, the reader can design a SynRM of distributed windings with a low torque ripple and with a better average torque. The methodology is valid for a wide range of SynRMs. To check the validity of the proposed equations, the sensitivity analysis for the variation of these two parameters on the SynRM torque and torque ripple is carried out. In addition, the analysis in this paper gives insight into the behavior of the machine as a function of these two parameters. Furthermore, the torque and torque ripple of SynRMs having a rotor with three, four and five flux-barriers are compared with three literature approaches. The comparison shows that the proposed equations are effective in choosing the flux-barrier angles and widths for low torque ripple and better average torque. Experimental results have been obtained to confirm the FEM results and to validate the methodology for choosing the rotor parameters.
- IE University Spain
- Flanders Make (Belgium) Belgium
- IE University Spain
- Kafrelsheikh University Egypt
- Kafrelsheikh University Egypt
Technology, Technology and Engineering, synchronous reluctance motor, finite element method (FEM), synchronous, T, design, reluctance motor, torque ripple, sensitivity analysis, design; finite element method (FEM); flux-barriers; sensitivity analysis; synchronous reluctance motor; torque ripple, flux-barriers
Technology, Technology and Engineering, synchronous reluctance motor, finite element method (FEM), synchronous, T, design, reluctance motor, torque ripple, sensitivity analysis, design; finite element method (FEM); flux-barriers; sensitivity analysis; synchronous reluctance motor; torque ripple, flux-barriers
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