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Effect of rotor bar size on three phase induction motor performance

This investigation is to determine the effect of rotor bar size to performance of three phase induction motor. The research was conducted in two forms, namely by using the FEM software and laboratory experiments that conducted on three fabricated rotor hardware models. The study using FEM software i...

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Main Author: Pungut, Ibrahim
Format: Thesis
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2014
Subjects:
Induction motor
Motorsolve
Efficiency
Rotor bar
Online Access:http://dspace.unimap.edu.my:80/dspace/handle/123456789/32374
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spelling my.unimap-323742014-03-05T08:40:31Z Effect of rotor bar size on three phase induction motor performance Pungut, Ibrahim Induction motor Motorsolve Efficiency Rotor bar This investigation is to determine the effect of rotor bar size to performance of three phase induction motor. The research was conducted in two forms, namely by using the FEM software and laboratory experiments that conducted on three fabricated rotor hardware models. The study using FEM software involves three (3) sizes, 6 mm, 8 mm and 10 mm, of rotor bar diameter. A user-friendly FEM software named Motorsolve, allowed simulation to be performed quickly and accurately. Comparison of the results from the software simulation then compared in terms of information on the name plate such as current, output power and power factor, equivalent circuit parameters, torque, efficiency, power input, power output, losses and magnetic flux density. The second part is the construction of three induction motor rotors with rotor bar size 6 mm, 8 mm and 10 mm. Construction starts with preparation of a block of non-grain steel laminations and then followed by cutting process using EDM wire cutting machine, the cut laminations then welded and followed by insertion of copper rotor bars, and finally is installation of both end rings and rotor’s shaft. The next stage is to carry out laboratory experiments such as no-load test, blocked rotor test, and direct current (DC) resistance test methods on the three rotor models that were fabricated. The information of voltage, current and power gathered allows mathematical calculation to determine the induction motor efficiency, losses and power factor, θ. Results from both investigations shows that the increment in rotor bar diameter will increase the current, power output, power factor, losses and torque at rated speed but decrease the starting torque. Results show that different sizes of rotor bar given different efficiency. Changes from 6 mm to 8 mm of rotor bar diameter increased the efficiency but changes from 8 mm to 10 mm of rotor bar diameter will decreased an induction motor efficiency. This is because increment the rotor bar size from 6 mm to 8 mm had decreased the percentage of losses to power input while further increment from 8 mm to 10 mm rotor bar size increased the percentage of losses to power input. 2014-03-05T08:40:31Z 2014-03-05T08:40:31Z 2012 Thesis http://dspace.unimap.edu.my:80/dspace/handle/123456789/32374 en Universiti Malaysia Perlis (UniMAP) School of Electrical Systems Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Induction motor
Motorsolve
Efficiency
Rotor bar
spellingShingle Induction motor
Motorsolve
Efficiency
Rotor bar
Pungut, Ibrahim
Effect of rotor bar size on three phase induction motor performance
description This investigation is to determine the effect of rotor bar size to performance of three phase induction motor. The research was conducted in two forms, namely by using the FEM software and laboratory experiments that conducted on three fabricated rotor hardware models. The study using FEM software involves three (3) sizes, 6 mm, 8 mm and 10 mm, of rotor bar diameter. A user-friendly FEM software named Motorsolve, allowed simulation to be performed quickly and accurately. Comparison of the results from the software simulation then compared in terms of information on the name plate such as current, output power and power factor, equivalent circuit parameters, torque, efficiency, power input, power output, losses and magnetic flux density. The second part is the construction of three induction motor rotors with rotor bar size 6 mm, 8 mm and 10 mm. Construction starts with preparation of a block of non-grain steel laminations and then followed by cutting process using EDM wire cutting machine, the cut laminations then welded and followed by insertion of copper rotor bars, and finally is installation of both end rings and rotor’s shaft. The next stage is to carry out laboratory experiments such as no-load test, blocked rotor test, and direct current (DC) resistance test methods on the three rotor models that were fabricated. The information of voltage, current and power gathered allows mathematical calculation to determine the induction motor efficiency, losses and power factor, θ. Results from both investigations shows that the increment in rotor bar diameter will increase the current, power output, power factor, losses and torque at rated speed but decrease the starting torque. Results show that different sizes of rotor bar given different efficiency. Changes from 6 mm to 8 mm of rotor bar diameter increased the efficiency but changes from 8 mm to 10 mm of rotor bar diameter will decreased an induction motor efficiency. This is because increment the rotor bar size from 6 mm to 8 mm had decreased the percentage of losses to power input while further increment from 8 mm to 10 mm rotor bar size increased the percentage of losses to power input.
format Thesis
author Pungut, Ibrahim
author_facet Pungut, Ibrahim
author_sort Pungut, Ibrahim
title Effect of rotor bar size on three phase induction motor performance
title_short Effect of rotor bar size on three phase induction motor performance
title_full Effect of rotor bar size on three phase induction motor performance
title_fullStr Effect of rotor bar size on three phase induction motor performance
title_full_unstemmed Effect of rotor bar size on three phase induction motor performance
title_sort effect of rotor bar size on three phase induction motor performance
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2014
url http://dspace.unimap.edu.my:80/dspace/handle/123456789/32374
_version_ 1643796875489312768
score 13.222552

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