الفهرس 
chapter 1Only 14 pages are availabe for public view
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Abstract
Temperature is an important parameter as it affects the
performance of electrical machines. Temperature variation affects
the current, winding resistance, electromagnetic torque, speed, slip,
and etc. Temperature rise is due to many reasons, among them are
the load increase and braking the shaft. .If the temperature increases
c •
beyond a certain limit, the electrical insulator may be subjected to a
breakdown. One of the most versatile electrical machines is the
induction motor which is the most commonly used in industrial
applications. So, the effect of temperature variation will be studied
with regard to the induction motor.
In this thesis, the effect of temperature variation on the
performance of the induction motor will be studied. Specifically,
tilia,eifect will be theotedcally studieci, in which a model for the
iad,uction motor will be developed in MA TLAB with the
corresponding equations mentioned. Furthermore, a thermal model
will be developed for the induction motor. Simulation results show
the effect of the temperature variation on the line voltage, current,
speed, flux, and torque. One of the main advantages of the
developed model is that it enables us to simulate the effect of
temperature variation on both the stator and rotor windings.