The effect of the rotor slot geometry on the performance characteristics of 1.5kw 4 poles asynchronous motors

Abstract

Nowadays, the finite element method is an accurate tool that outperforms other methods of studying electrical machines. The objective of this paper is to apply the finite element method based on Ansys Maxwell software to evaluate the influence of the shape of the rotor slot of an asynchronous motor. This approach facilitates the process of studying the optimisation of the shape of the rotor bar without being limited by the shape, the arrangement of the number of rotor slots, or especially the cost of manufacturing the prototype, which is often studied in classical induction machines. In this paper, the author uses a 1.5kW 4-pole asynchronous motor as a design research model. These results provide intuitive insights into the influence of the shape of the squirrel cage slot on the operating mode of a 3-phase asynchronous motor.