Abstract
120° phase belt toroidal winding solid rotor induction motor (120°PBTWSRIM) has advantages of simple structure, short end winding, and high overload capacity, thus it has good development prospects. To study the influence of different structural parameters on 120°PBTWSRIM performance, the 2D finite element model is established, and the electromagnetic characteristics are analyzed. The influence of six structure parameters on the average output torque, power factor, and torque ripple are analyzed, which are slot opening width, slot opening height, slot width, slot height, slot radius, and copper layer thickness. It is found that copper layer thickness has a significant effect on the performance of 120°PBTWSRIM. When the copper layer thickness is 0.5 mm, locked average output torque is increased to 2.784 Nm, locked power factor is increased by 64.6%, and locked torque ripple is reduced by 79.7%. Finally, a prototype of 120°PBTWSRIM is built and experimented, the correctness of performance influence analysis is verified by the comparison of results of the simulation and the experiment.
Highlights
With the merits of simple structure, high reliability, and good starting performance, the solid rotor induction motor (SRIM) is applied in many fields [1]
When of the copper layer is 0.5 mm, the average output torque is increased to 2.784 Nm, the power factor is the thickness of the copper layer is 0.5 mm, the average output torque is increased to 2.784 Nm, the increased by 64.6%, and the torque ripple is reduced by 79.7% under locked
To study the relationship between the structure parameters and electromagnetic performance of 120◦ PBTWSRIM, this paper uses the finite element method to focus on the influence of structure parameters on electromagnetic performance of 120◦ PBTWSRIM, and the following conclusions are obtained
Summary
With the merits of simple structure, high reliability, and good starting performance, the solid rotor induction motor (SRIM) is applied in many fields [1]. S. Bruk [5], initiated research in the field of induction motors with solid rotors [5]. There are applications of toroidal winding structures in various types of motors [10,11,12,13,14]. The dynamic analysis of a toroidal winding switched reluctance motor (TSRM) is analyzed [10]. The performance of an external rotor induction motor with multipole stator winding is studied in [14].
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