The effect of different stator slot size on flux and losses distribution in 0.5 hp induction motor
A study of stator slot design is conducted for induction motor in order to improve the efficiency and reduce the losses. In this thesis, the effect of different stator slot size on the flux and losses distribution in 0.5 hp induction motor have been thoroughly investigated via FEM and experimenta...
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my-unimap-319222014-02-14T01:49:45Z The effect of different stator slot size on flux and losses distribution in 0.5 hp induction motor Nor Shafiqin, Shariffuddin A study of stator slot design is conducted for induction motor in order to improve the efficiency and reduce the losses. In this thesis, the effect of different stator slot size on the flux and losses distribution in 0.5 hp induction motor have been thoroughly investigated via FEM and experimental work. Two stator core models with the slot size of 6 mm and 8 mm have been designed and fabricated in this project. The scope of using FEM reveals parameters such as the stator copper loss, total loss and efficiency. This result is then discussed in terms of differences between two stator slot sizes. The experimental techniques have been performed in order to measure the localised flux density distribution of fundamental and individual harmonic components (odd order) within the stator by using search coil method and the localised power loss distribution throughout the stator core by using the thermistor method. The localised flux density is compared with the magnetic potential line (FEM) in order to verify the similarity of the flux distribution in the stator core. The flux distribution is decreased towards the outer region of the stator core and at the stator teeth; the flux density is much higher than others for both localised flux density distribution and magnetic potential line. The localised power loss distribution is proportional with the localised flux density distribution due to the influence of localised power loss towards the harmonic content of flux distribution. The differences of the stator slot size can affect the magnetic flux density at the stator core. Results shows that the fundamental and the individual harmonic components of in-plane and normal flux density at the stator slot size 8 mm were lower compared to the stator slot size 6 mm. It also reveals that the minimum localised flux density and power loss occurs at 8 mm slot size compare to 6 mm. FEM result shows that increasing the stator slot size 6 mm to 8 mm had improved the motor’s efficiency by 2.92%. Overall concrete result concludes that the 8 mm stator slot does lower the losses and increase the induction motors efficiency. Universiti Malaysia Perlis (UniMAP) 2012 Thesis en http://dspace.unimap.edu.my:80/dspace/handle/123456789/31922 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31922/1/Page%201-24.pdf 0b751bc1ef315823093fd027ae7f0c8c http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31922/2/Full%20text.pdf 997564fd4853e13957b2708f802a87fa http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31922/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Stator slot design Induction motor Flux distribution Power loss Flux density School of Electrical System Engineering |
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Universiti Malaysia Perlis |
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UniMAP Institutional Repository |
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English |
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Stator slot design Induction motor Flux distribution Power loss Flux density |
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Stator slot design Induction motor Flux distribution Power loss Flux density Nor Shafiqin, Shariffuddin The effect of different stator slot size on flux and losses distribution in 0.5 hp induction motor |
| description |
A study of stator slot design is conducted for induction motor in order to improve the
efficiency and reduce the losses. In this thesis, the effect of different stator slot size on
the flux and losses distribution in 0.5 hp induction motor have been thoroughly
investigated via FEM and experimental work. Two stator core models with the slot size
of 6 mm and 8 mm have been designed and fabricated in this project. The scope of
using FEM reveals parameters such as the stator copper loss, total loss and efficiency.
This result is then discussed in terms of differences between two stator slot sizes. The
experimental techniques have been performed in order to measure the localised flux
density distribution of fundamental and individual harmonic components (odd order)
within the stator by using search coil method and the localised power loss distribution
throughout the stator core by using the thermistor method. The localised flux density is
compared with the magnetic potential line (FEM) in order to verify the similarity of the
flux distribution in the stator core. The flux distribution is decreased towards the outer
region of the stator core and at the stator teeth; the flux density is much higher than
others for both localised flux density distribution and magnetic potential line. The
localised power loss distribution is proportional with the localised flux density
distribution due to the influence of localised power loss towards the harmonic content of
flux distribution. The differences of the stator slot size can affect the magnetic flux
density at the stator core. Results shows that the fundamental and the individual
harmonic components of in-plane and normal flux density at the stator slot size 8 mm
were lower compared to the stator slot size 6 mm. It also reveals that the minimum
localised flux density and power loss occurs at 8 mm slot size compare to 6 mm. FEM
result shows that increasing the stator slot size 6 mm to 8 mm had improved the motor’s
efficiency by 2.92%. Overall concrete result concludes that the 8 mm stator slot does
lower the losses and increase the induction motors efficiency. |
| format |
Thesis |
| author |
Nor Shafiqin, Shariffuddin |
| author_facet |
Nor Shafiqin, Shariffuddin |
| author_sort |
Nor Shafiqin, Shariffuddin |
| title |
The effect of different stator slot size on flux and losses distribution in 0.5 hp induction motor |
| title_short |
The effect of different stator slot size on flux and losses distribution in 0.5 hp induction motor |
| title_full |
The effect of different stator slot size on flux and losses distribution in 0.5 hp induction motor |
| title_fullStr |
The effect of different stator slot size on flux and losses distribution in 0.5 hp induction motor |
| title_full_unstemmed |
The effect of different stator slot size on flux and losses distribution in 0.5 hp induction motor |
| title_sort |
effect of different stator slot size on flux and losses distribution in 0.5 hp induction motor |
| granting_institution |
Universiti Malaysia Perlis (UniMAP) |
| granting_department |
School of Electrical System Engineering |
| url |
http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31922/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31922/2/Full%20text.pdf |
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