Analysis of Fatigue Due to Thermal Stress in Induction Rotor

Publication Date : 29/02/2016

Author(s) :

Mohd. Shakib Hussain.

Volume/Issue :
Volume 2
Issue 2
(02 - 2016)

Abstract :

The electromagnetic behavior of the induction rotor is obtained by coupling the field equations to the voltage equations of the windings. The nonlinearity due to the saturation of the iron core and the temperature dependency of the electrical conductivity are taken into account, since it leads to thermal stress. When the heat sources are evaluated the temperature distribution in the induction motor is obtained. In order to improve The accuracy of the formulation, thermal contact resistances, external and internal convection are considered. This paper analyzes the thermal stresses on the rotor of an induction motor and performance of rotor in terms of fatigue. The mechanical deformations and thermal stress distributions are obtained. The numerical analyzes of the thermal field are verified by various experimental results. The results presented in this paper prove that the thermal stress of electric material characteristics must be considered, to accurately prove the fatigue behavior of the induction rotors during the design stage

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