STUDYING THE EFFECTS OF SLOT SHAPE AND ROTOR BAR MATERIAL ON THE PERFORMANCE OF LSPMSM MOTORS BASED ON ANSYS MAXWELL SOFTWARE

Abstract

The line-start permanent magnet synchronous motor (LSPMSM) is designed based on the squirrel cage rotor structure of the asynchronous motor. The objective of this paper is to apply Ansys Maxwell software to evaluate the influence of some types of squirrel cage rotor slot shapes on the dynamic process of the LSPMSM motor. This method helps to evaluate the influence of the shape as well as the material of the rotor conductor on the characteristics with a constant number of conductors and reduce the research cost for current electric motors. For this study, the authors used the parameters of the LSPMSM motor with the given calculation parameters with a capacity of 11 kW, 4 poles, in which the stator uses 2-layer copper wire. To evaluate the influence of the slot shape, the authors used 4 different slot types with varying sizes, then based on Ansys Maxwell software to give the results of the starting characteristics of the LSPMSM motor for each slot type. In addition, the authors also changed two types of materials used to manufacture the squirrel cage rotor, aluminium and copper, to evaluate the effectiveness of using each of these materials. The results provide a more comprehensive view of the design of squirrel cage bars for LSPMSM motors