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Vol. 28 (2025 year), No. 4, DOI: 10.21443/1560-9278-2025-28-4/1

Ibatullin E. E., Petrov T. I.
Influence of the number of stator slots on the performance of a permanent magnet synchronous motor with fixed stator dimensions

Optimization of the design parameters of permanent magnet synchronous motors (PMSM) is an important task in the context of increased requirements for energy efficiency and compactness of electrical machines. One of the key factors influencing the electromagnetic performance of such machines is the number of stator slots, which directly affects parameters such as torque, torque ripple, electromagnetic losses, and overall efficiency. This study presents a numerical investigation of PMSM performance with various stator slot configurations, while maintaining fixed geometric dimensions of the active zone. Simulations have been carried out using the specialized Motor-CAD software package. A comparative analysis has revealed the relationship between the number of stator slots and the machine's main electromagnetic characteristics. Several configurations have been identified that offer the best balance between average torque, reduced torque ripple, and improved efficiency. The obtained results can be applied in the design of PMSMs intended for use in applications with strict spatial constraints, as well as during the parametric optimization of new motor models. The proposed approach enhances the accuracy of selecting optimal design parameters and reduces the need for physical prototyping by enabling reliable performance evaluation through numerical modeling.

(in Russian, стр.12, fig. 8, tables. 3, ref 15, AdobePDF, AdobePDF 0 Kb)