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Torque Density Improvement Of Spoke Type BLDC Motor Using Hollow Rotor Topology

A spoke type motor has high torque because it uses reluctance torque and magnetic torque simultaneously. Rotor spoke type BLDC have a large amount of circling flux below the permanent magnet. This means that the motor cannot operates in optimum condition due to large unused flux. To overcome this pr...

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Main Author: Sulaiman, Farina
Format: Thesis
Language:English
English
Published: 2016
Subjects:
T Technology (General)
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.utem.edu.my/id/eprint/18352/1/Torque%20Density%20Improvement%20Of%20Spoke%20Type%20BLDC%20Motor%20Using%20Hollow%20Rotor%20Topology.pdf
http://eprints.utem.edu.my/id/eprint/18352/2/Torque%20Density%20Improvement%20Of%20Spoke%20Type%20BLDC%20Motor%20Using%20Hollow%20Rotor%20Topology.pdf
http://eprints.utem.edu.my/id/eprint/18352/
https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=100134
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spelling my.utem.eprints.183522021-10-10T15:31:41Z http://eprints.utem.edu.my/id/eprint/18352/ Torque Density Improvement Of Spoke Type BLDC Motor Using Hollow Rotor Topology Sulaiman, Farina T Technology (General) TK Electrical engineering. Electronics Nuclear engineering A spoke type motor has high torque because it uses reluctance torque and magnetic torque simultaneously. Rotor spoke type BLDC have a large amount of circling flux below the permanent magnet. This means that the motor cannot operates in optimum condition due to large unused flux. To overcome this problem, thickness of inner rotor radius, r3 is increase in order to study effect of edge magnet. Hollow rotor is designed to maximize the usage of flux by contributing all the unused flux to circulate around coil. Finite Element Method(FEM) is used to analyze the characteristic and performance of spoke type BLDC machine which include radial flux density, tangential flux density, back emf, inductance, flux linkage and torque. Then, a new spoke type BLDC motor called as Hollow rotor is proposed to overcome the usage of flux in spoke type BLDC motor. For the methodology,some value for design of stator, coil and permanent magnet are selected based on the required specification. After that, electromagnetic characteristic of the selected conventional model is analyzed and parameter for the flux leakage reduction is carried out. In addition, performance analysis of the proposed hollow-rotor also been carried out.Hollow rotor spoke type BLDC motor is been fabricated and experimentally evaluated. The simulation results from the FEM are verified with the measurement result in term of back emf, static torque, torque vs speed, mechanical power, output power, dynamic torque and efficiency and has shown a good agreement. Torque density of hollow-rotor increase almost 50% compared to conventional spoke type BLDC motor. In conclusions, the research proposed a new improvement in spoke type BLDC motor that could provide higher torque density with reasonable motor size. Finally, this thesis provides guidelines, suggestions and proposes a better improved structure in designing BLDC motor. 2016 Thesis NonPeerReviewed text en http://eprints.utem.edu.my/id/eprint/18352/1/Torque%20Density%20Improvement%20Of%20Spoke%20Type%20BLDC%20Motor%20Using%20Hollow%20Rotor%20Topology.pdf text en http://eprints.utem.edu.my/id/eprint/18352/2/Torque%20Density%20Improvement%20Of%20Spoke%20Type%20BLDC%20Motor%20Using%20Hollow%20Rotor%20Topology.pdf Sulaiman, Farina (2016) Torque Density Improvement Of Spoke Type BLDC Motor Using Hollow Rotor Topology. Masters thesis, Universiti Teknikal Malaysia Melaka. https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=100134
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
English
topic T Technology (General)
TK Electrical engineering. Electronics Nuclear engineering
spellingShingle T Technology (General)
TK Electrical engineering. Electronics Nuclear engineering
Sulaiman, Farina
Torque Density Improvement Of Spoke Type BLDC Motor Using Hollow Rotor Topology
description A spoke type motor has high torque because it uses reluctance torque and magnetic torque simultaneously. Rotor spoke type BLDC have a large amount of circling flux below the permanent magnet. This means that the motor cannot operates in optimum condition due to large unused flux. To overcome this problem, thickness of inner rotor radius, r3 is increase in order to study effect of edge magnet. Hollow rotor is designed to maximize the usage of flux by contributing all the unused flux to circulate around coil. Finite Element Method(FEM) is used to analyze the characteristic and performance of spoke type BLDC machine which include radial flux density, tangential flux density, back emf, inductance, flux linkage and torque. Then, a new spoke type BLDC motor called as Hollow rotor is proposed to overcome the usage of flux in spoke type BLDC motor. For the methodology,some value for design of stator, coil and permanent magnet are selected based on the required specification. After that, electromagnetic characteristic of the selected conventional model is analyzed and parameter for the flux leakage reduction is carried out. In addition, performance analysis of the proposed hollow-rotor also been carried out.Hollow rotor spoke type BLDC motor is been fabricated and experimentally evaluated. The simulation results from the FEM are verified with the measurement result in term of back emf, static torque, torque vs speed, mechanical power, output power, dynamic torque and efficiency and has shown a good agreement. Torque density of hollow-rotor increase almost 50% compared to conventional spoke type BLDC motor. In conclusions, the research proposed a new improvement in spoke type BLDC motor that could provide higher torque density with reasonable motor size. Finally, this thesis provides guidelines, suggestions and proposes a better improved structure in designing BLDC motor.
format Thesis
author Sulaiman, Farina
author_facet Sulaiman, Farina
author_sort Sulaiman, Farina
title Torque Density Improvement Of Spoke Type BLDC Motor Using Hollow Rotor Topology
title_short Torque Density Improvement Of Spoke Type BLDC Motor Using Hollow Rotor Topology
title_full Torque Density Improvement Of Spoke Type BLDC Motor Using Hollow Rotor Topology
title_fullStr Torque Density Improvement Of Spoke Type BLDC Motor Using Hollow Rotor Topology
title_full_unstemmed Torque Density Improvement Of Spoke Type BLDC Motor Using Hollow Rotor Topology
title_sort torque density improvement of spoke type bldc motor using hollow rotor topology
publishDate 2016
url http://eprints.utem.edu.my/id/eprint/18352/1/Torque%20Density%20Improvement%20Of%20Spoke%20Type%20BLDC%20Motor%20Using%20Hollow%20Rotor%20Topology.pdf
http://eprints.utem.edu.my/id/eprint/18352/2/Torque%20Density%20Improvement%20Of%20Spoke%20Type%20BLDC%20Motor%20Using%20Hollow%20Rotor%20Topology.pdf
http://eprints.utem.edu.my/id/eprint/18352/
https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=100134
_version_ 1715193891754344448
score 13.211869

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