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)
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
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id	my-utem-ep.18352
record_format	uketd_dc
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
advisor	Kashfi, Raja Nor Firdaus
topic	T Technology (General) T Technology (General)
spellingShingle	T Technology (General) T Technology (General) 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
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
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
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty of Electrical Engineering
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
_version_	1747833920019234816
spelling	my-utem-ep.183522021-10-10T15:31:41Z Torque Density Improvement Of Spoke Type BLDC Motor Using Hollow Rotor Topology 2016 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 http://eprints.utem.edu.my/id/eprint/18352/ http://eprints.utem.edu.my/id/eprint/18352/1/Torque%20Density%20Improvement%20Of%20Spoke%20Type%20BLDC%20Motor%20Using%20Hollow%20Rotor%20Topology.pdf text en public http://eprints.utem.edu.my/id/eprint/18352/2/Torque%20Density%20Improvement%20Of%20Spoke%20Type%20BLDC%20Motor%20Using%20Hollow%20Rotor%20Topology.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=100134 mphil masters Universiti Teknikal Malaysia Melaka Faculty of Electrical Engineering Kashfi, Raja Nor Firdaus 1. AHMED, S., and LEFLEY, P., 2009. Development of a Single Phase PM BLDC Motor from a Novel Generic Model. IEEE 11th Spanish Portuguese Conference on Electrical Engineering, pp. 1–5. 2. ANSYS. , 2016. About Ansys. [online] Available at: http://www.ansys.com/About-ANSYS [Accessed on 1 April 2016] 3. ANSYS INC., 2010 Ansys Maxwell 2D. [e-book] Canonsburg: Ansys. Available through: Universiti Teknikal Malaysis Melaka/machine design lab [Accessed on 1 April 2016] 4. ALLIED MOTION., 2016. Brushless DC Motors. [online] Available at: http://www.alliedmotion.com/bldcmotor/index.html [Accessed on 2 April 2016] 5. KIM, H.G., HUR, J., KIM, B.W., 2010. Irreversible Demagnetization Analysis of IPM Type BLDC Motor Considering the Circulating Current by Stator Turn Fault. 14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2010, 45(7), p. 7062. 6. ASGHARPOUR-ALAMDARI, H., IZADFAR, H., ILKA, R., and ALINEJAD-BEROMI, Y., 2014. Comparison of Different Permanent Magnet Arrangements of BLDC Motors Based on Finite Element Analysis. International Journal of Mechatronics, Electrical and Computer Technology. 4(12), pp. 1353–1365. 7. BIANCHI, N., BOLOGNANI, S., LUISE, F., 2005. Analysis and design of PM brushless motor for high-speed operation. IEEE Transitions on Energy Conversion, 20(3) pp. 629-637. 8. CHEN, Q., LIU, G., ZHAO, W., and SHAO, M., 2013. Nonlinear Adaptive Lumped Parameter Magnetic Circuit Analysis for Spoke-Type Fault-Tolerant Permanent-Magnet Motors. IEEE Transactions on Magnetics, 49(9), pp. 5150–5157. 9. CHRISTEN, A., and HAERRI, V. V., 2014. Analysis of a Six- and Three-Phase Interior Permanent Magnet Synchronous Machine with Flux Concentration for an Electrical Bike. 2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2014, pp. 1251–1255. 10. DALAL, A., SAMEER, N., and KUMAR, P., 2016. 2-D Analytical Subdomain Model for Hybrid Dual-Rotor Motor. IEEE Transactions on Magnetics, 52(6), pp. 1-8. 11. DELFORGE, C., LEMAIRI-SEMAIL, B., 1995. Induction machine modelling using finite element and permeance network methods. IEEE Transactions on Magnetics, 31(31), pp. 2092-2095. 12. HUR, J., AND KIM, B.W., 2010. Rotor Shape Design of an Interior PM Type BLDC Motor for Improving Mechanical Vibration and EMI Characteristics. Journal of Electrical Engineering and Technology, 5(3), pp. 462–467. 13. HWANG, K.Y., RHEE, S.B., YANG, B.Y., and KWON, B.I., 2006. Rotor Pole Design in Spoke Type BLDC Motor by RSM. 12th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2006, p. 4244. 14. HWANG, K.-Y., RHEE, S.-B., YANG, B.-Y., and KWON, B.-I., 2007. Rotor Pole Design in Spoke-Type Brushless DC Motor by Response Surface Method. IEEE Transactions on Magnetics, 43(4), pp. 1833–1836. 15. JAHNS T.M., SOONG W.L., 1996. Pulsating Torque Minimization Techniques for Permanent Magnet AC Motor Drives – A Review. IEEE Transaction on Industrial Electronics. 43(2), pp.321-330. 16. KANG, G.H., HUR, J., NAM, H., HONG, J.P., and KIM, G.T., 2003. Analysis of Irreversible Magnet Demagnetization in Line-Start Motors Based on the Finite-Element Method. IEEE Transactions on Magnetics, 39(3), pp. 1488–1491. 17. KANG, G.-H., HUR, J., SUNG, H.-G., and HONG, J.-P., 2003b. Optimal Design of Spoke Type BLDC Motor Considering Irreversible Demagnetization of Permanent Magnet. Electrical Machines and Systems, 2003. ICEMS 2003. Sixth International Conference on, 1(1), pp. 234–237. 18. KANG, G.-H.K.G.-H., HONG, J.-P.H.J.-P., KIM, G.-T.K.G.-T., and PARK, J.-W.P.J.-W., 1998. Improved Parameter Modeling of Interior Permanent Magnet Synchronous Motor Based on Finite Element Analysis. IEEE Transactions on Magnetics, 36(4), pp. 3620–3623. 19. KERDSUP, B., and FUENGWARODSAKUL, N.H., 2011. Analysis of Brushless DC Motor in Operation with Magnetic Saturation Using FE Method. ECTI-CON 2011 - 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011, pp. 629–632. 20. KIM, D.Y., NAM, J.K., and JANG, G.H., 2013. Reduction of Magnetically Induced Vibration of a Spoke-Type iPM Motor Using Magnetomechanical Coupled Analysis and Optimization. IEEE Transactions on Magnetics, 49(9), pp. 5097–5105. 21. KIM, H.W., KIM, K.T., JO, Y.S., and HUR, J., 2013. Optimization Methods of Torque Density for Developing the Neodymium Free SPOKE-Type BLDC Motor. IEEE Transactions on Magnetics, 49(5), pp. 2173–2176. 22. KIM, H.W., KIM, K.T., KIM, B.W., HUR, J., and JO, Y.S., 2012. Design of New Spoke Type Brushless DC Motor for Neodymium Permanent Magnet Free. 2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012, pp. 133–137. 23. KIM, S. IL, CHO, J., PARK, S., PARK, T., and LIM, S., 2013. Characteristics Comparison of a Conventional and Modified Spoke-Type Ferrite Magnet Motor for Traction Drives of Low-Speed Electric Vehicles. IEEE Transactions on Industry Applications, 49(6), pp. 2516–2523. 24. KUMAR, P., and BAUER, P., 2008. Improved Analytical Model of a Permanent-Magnet Brushless DC Motor. IEEE Transactions on Magnetics, 44(10), pp. 2299–2309. 25. KO, H. S., and KIM, K. J., 2004. Characterization of Noise and Vibration Sources in Interior Permanent Magnet Brushless DC Motors. IEEE Transitions on Magnetics, 40(6). 26. LEE, B.-K.L.B.-K., KANG, G.-H.K.G.-H., HUR, J.H.J., and YOU, D.-W.Y.D.-W., 2004. Design of Spoke Type BLDC Motors with High Power Density for Traction Applications. Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting., 2(3), pp. 1068–1074. 27. FAULHABER., n.d. DC-Motors. [online] Available at: https://fmcc.faulhaber.com/type/PGR_13813_13801/PGR_13818_13813/en/GLOBAL/ [Accessed on 1 April 2016] 28. F.J.GIERAS, W. MITCHELL., Permanent Magnet Motor Technology, Ohio: Columbia, 2002. 29. LEE, S.K., KANG, G.H., HUR, J., and KIM, B.W., 2012. Stator and Rotor Shape Designs of Interior Permanent Magnet Type Brushless DC Motor for Reducing Torque Fluctuation. IEEE Transactions on Magnetics, 48(11), pp. 4662–4665. 30. LEFLEY, P., PETKOVSKA, L., AHMED, S., and CVETKOVSKI, G., 2010. Finite Element Analysis of a Novel Single Phase Permanent Magnet Brushless DC Motor. Proceedings of 14th International Power Electronics and Motion Control Conference EPE-PEMC 2010, pp. 96–101. 31. LIN, D., ZHOU, P., LU, C., and LIN, S., 2012. Analytical Prediction of Cogging Torque for Spoke Type Permanent Magnet Machines. IEEE Transactions on Magnetics, 48(2), pp. 1035–1038. 32. LÓPEZ-FERNANDEZ, X.M., GYSELINCK, J., and SILVEIRA-CORREA, R., 2006. Finite Element Analysis of an Outer-Rotor Permanent-Magnet Brushless DC Motor for Light Traction. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 25(3), pp. 705–712. 33. LUKANISZYN, M., and MLOT, A., 2006. Analysis of a BLDC Motor with Fractional Slot Winding. Proceedings of Electrotechnical Institut, 20(229), pp 1-5. 34. MOHAMMAD, M.R., KIM, K.T., and HUR, J., 2013. Design and Analysis of a Spoke Type Motor with Segmented Pushing Permanent Magnet for Concentrating Air-Gap Flux Density. IEEE Transactions on Magnetics, 49(5), pp. 2397–2400. 35. NIKAM, S.P., RALLABANDI, V., and FERNANDES, B.G., 2012. A High-Torque-Density Permanent-Magnet Free Motor for in-Wheel Electric Vehicle Application. IEEE Transactions on Industry Applications, 48(6), pp. 2287–2295. 36. NORHISAM, M., RIZUAN, S., FIRDAUS, R. N., ARAVIND, C. V., WAKIWAKA, H., NIREI, M., 2012. Comparative evaluation on power-speed density of portable permanent magnet generators for agricultural application. Progress In Electromagnetics Research. 129, pp. 345-363. 37. OHIRA, S., HASEGAWA, N., MIKI, I., MATSUHASHI, D., and OKITSU, T., 2012. Torque Characteristics of IPMSM with Spoke and Axial Type Magnets. SPEEDAM 2012 - 21st International Symposium on Power Electronics, Electrical Drives, Automation and Motion, pp. 818–821. 38. ORIENTALMOTOR., 2016. Brushless DC Motor. [online] Available at: http://www.orientalmotor.com/products/brushless-dc-motors/index.html [Accessed on 1 April 2016] 39. PETKOVSKA, L., LEFLEY, P.W., and CVETKOVSKI, G., 2012. Static Characteristics of a Novel Low Cost Brushless DC Permanent Magnet Motor. Przegland Electrotechniczny (electrical review) 3(1), pp. 164–168. 40. PRAVEEN, R.P., RAVICHANDRAN, M.H., SADASIVAN ACHARI, V.T., JAGATHY RAJ, V.P., MADHU, G., and BINDU, G.R., 2011. Design and Analysis of Zero Cogging Brushless DC Motor for Spacecraft Applications. Transactions on Electrical Engineering, Electronics, and Communications, 9(1), pp. 113–120. 41. RAHMAN, M.M., KIM, K., HUR, J., and IEEE, S.M., n.d. Design and Optimization of Neodymium Free Spoke Type Motor with Segmented Wing Shape PM. IEEE Conference on Electrical Engineering, Electronics, and Communications pp. 1–2. 42. RAJA OTHMAN, R. N. F. K., 2013 Design Of A High Fundamental Torque Single Phase Double Stator Brushless DC Motor. Doctor Of Philosophy. Universiti Putra Malaysia. 43. SEO, J., KIM, J., RHYU, S., CHOI, J., JUNG, I., 2011. A Study on Brushless DC Motor for High Torque Density. Transactions on Electrical Engineering, Electronics, and Communications 5(10), pp. 225–229. 44. SRISIRIWANNA, T., and KONGHIRUN, M., 2012. A Study of Cogging Torque Reduction Methods in Brushless Dc Motor. Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2012 9th International Conference on, pp. 1–4. 45. TELCO MOTION., 2014. DC Brushless Motors. [online] Available at: http://www.telcointercon.com/Brushless-DC-Motors-8.html [Accessed on 2 April 2016] 46. TESSAROLO, A., MEZZAROBBA, M., and MENIS, R., 2015. Modeling, Analysis, and Testing of a Novel Spoke-Type Interior Permanent Magnet Motor with Improved Flux Weakening Capability. IEEE Transactions on Magnetics, 51(4), pp. 23-27. 47. TOUTI, S., IBTIOUEN, R., TOUHAMI, O., DJERDIR, A., 2011. Experimental investigation and optimization of permanent magnet motor based on coupling boundary element method with permeances network. Progress in Electromagnetics Research. 111, pp. 71-90. 48. TRANSMOTEC., n.d. DC Motors. [online] Available at: http://www.orientalmotor.com/products/brushless-dc-motors/index.html [Accessed on 1 April 2016] 49. TU, X., DAI, Y., and GU, C., 2012. Direct Torque and Adaptive Flux Control of Novel Transverse-Flux Permanent Magnet Motor with Brushless DC Drive. Machines and Systems (ICEMS), 2012 15th, (1). pp 1-5. 50. ZHAO, W., LIPO, T.A., and KWON, B. Il, 2015. Torque Pulsation Minimization in Spoke-Type Interior Permanent Magnet Motors with Skewing and Sinusoidal Permanent Magnet Configurations. IEEE Transactions on Magnetics, 51(11), pp. 10–13. 51. ZHU, Z, 2007. Recent development of Halbach permanent magnet machines and application. Proceeding Power Conversion Conference, pp. 9-16

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

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