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Type: Thesis
Title: Thermal modelling of deep bar induction motor at stall.
Author: Feyzi, Mohammed Reza
Issue Date: 1998
School/Discipline: Dept. of Electrical and Electronic Engineering
Abstract: As with all motors, the performance of an induction motor while at standstill, whether in the course of a normal starting sequence or as a result of stall, is of crucial importance to a designer. Since the motor is under full voltage, a fast temperature rise may occur in different parts of the motor before the power source is isolated, or substantial acceleration occurs. This may damage some parts of the motor, or cause a premature aging of the electric insulation in various parts of the motor, in particular the stator winding. In addition, in applications where the motor is surrounded by a potentially explosive atmosphere, an unexpected temperature rise at any point in a motor may be enough to ignite the existing mixture of gases. To avoid such phenomena, the temperature distribution in the motor should be predicted as accurately as possible to ensure reliable protection of the motor against overheating in critical points. This work is an attempt to improve the accuracy of prediction of transient temperature distribution in an induction motor, with particular attention to the modelling of deep-bar cage motors.
Dissertation Note: Thesis (Ph.D.) -- University of Adelaide, Dept. of Electrical and Electronic Engineering, 1998
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