Dynamic modeling of induction motor taking into account thermal stresses

Abstract

-The study of thermal behaviour is useful to identify causes of failure in electrical machines. This work details a two dimensional model for computing the magnetic and thermal finite element solution of induction motor using a weak coupling algorithm. In order to improve the accuracy of the adopted numerical formulation, the decrease of the electric conductivity with temperature is taking into account.

Methodologies development and analysis for obtaining boundary conditions of heat transfer in a linear motor driven stage

“…As the mathematical models of thermal effects have not been well established, for more than a decade, many researchers have relied on finite element methods to analyze heat transfer of motors and the environment [46][47][48][49][50][51][52]. Some of the research efforts include electromagnetic and temperature distribution on a two-dimensional case [46], thermal network with losses [47], field-circuit coupling methods [48], simulation of an electrical and thermal coupling using air gaps approximated with equivalent conductive values [49], simulations of eddy current heat sources [50], temperature effects on eddy current generation [51], simulation and temperature profile of motors [52] and computational fluid dynamics and thermal simulation of motors [53,54]. Dajaku and Gerking [55] developed an improved lumped parameter thermal model for electrical machines.…”