Original scientific paper The temperature distribution over the cross-section of an induction motor is calculated at the steady state and transient condition. In order to develop smaller and more efficient electric motors, there is a necessity to carry out more thermal analysis in parallel with the traditional electromagnetic design. It has been found that attention to the thermal design can be...

A simple circuit is designed and used for studying the motion of a simple pendulum. The circuit can be reproduced for purposes of verifications of various circuits taught theoretically at undergraduate levels. As a useful example of instrumentation, the assembled circuit has enabled illustration of Faraday’s law of induction.

The induction motor is without doubt the most used electrical motor because of its unique characteristics. Induction motors are the most common motors used in industrial motion control system due to its low-cost, simple and rugged design. Induction motors drives are widely used to control the speed of conveyor systems, blower speeds, pump speeds, machine tool speeds, and other applications that...

Magnetic slot wedges are often used to improve starting performance of large induction motors. In this paper we have investigated – through simulation – the effects of the wedges on the performance characteristics of the motor and core losses under no load condition. Both analytical and hybrid two-dimensional field-circuit models have been used. In order to reliably establish the parameters of ...

Despite the emergence of new types of electric machines, the squirrel-cage induction motor remains the dominant one. A motor failure can result in large lost revenues. One of types of faults that can occur in these motors is airgap eccentricity. This paper presents results, based on a Finite Element Analysis. It is shown that static eccentricity leads to a non-uniform temperature distribution a...

Background and Objectives: Despite superior privileges that multiphase motors offer in comparison with their three-phase counterparts, in the field of multiphase linear induction motors (LIMs) few studies have been reported until now. To combine the advantages of both multiphase motors and linear induction motors, this paper concentrates on multiphase LIM drives considering the end effects. Met...

This paper proposes an effective method for estimating the parameters of double-cage induction motors by using Artificial Bee Colony (ABC) algorithm. For this purpose the unknown parameters in the electrical model of asynchronous machine are calculated such that the sum of the square of differences between full load torques, starting torques, maximum torques, starting currents, full load curren...

Three phase Squirrel Cage Induction Motors (SCIM) are continuously subjected to electrical, thermal, mechanical and environmental stresses in any industrial application. Such stresses can result in rotor bar damage. Due to such faults an unsymmetrical magnetic field will be setup and can lead to reduction in developed torque, increase in speed fluctuations, noise and vibrations. The present wor...