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
Subjects:	Induction motor Motorsolve Efficiency Rotor bar
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32374/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32374/2/Full%20text.pdf
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id	my-unimap-32374
record_format	uketd_dc
spelling	my-unimap-323742014-03-05T08:40:31Z Effect of rotor bar size on three phase induction motor performance Pungut, Ibrahim 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. Universiti Malaysia Perlis (UniMAP) 2012 Thesis en http://dspace.unimap.edu.my:80/dspace/handle/123456789/32374 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32374/1/Page%201-24.pdf 9b2b74cfb2bd8aca0ef0c0472b7492f8 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32374/2/Full%20text.pdf 29498f288a35351b32f051961b83591d http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32374/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Induction motor Motorsolve Efficiency Rotor bar School of Electrical Systems Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
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
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Electrical Systems Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32374/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32374/2/Full%20text.pdf
_version_	1747836799113232384

Effect of rotor bar size on three phase induction motor performance

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