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A novel analytical method using virtual PM blocks to optimize magnet segmentations in surface-mounted PM synchronous machines

Tiang, T. L., Ishak, D., Lim, C. P. and Kamarol, M. 2016, A novel analytical method using virtual PM blocks to optimize magnet segmentations in surface-mounted PM synchronous machines, in ICEMS 2015: Proceedings of the 18th International Conference on Electrical Machines and Systems, IEEE, Piscataway, N.J., pp. 1278-1283, doi: 10.1109/ICEMS.2015.7385236.

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Title A novel analytical method using virtual PM blocks to optimize magnet segmentations in surface-mounted PM synchronous machines
Author(s) Tiang, T. L.
Ishak, D.
Lim, C. P.ORCID iD for Lim, C. P. orcid.org/0000-0003-4191-9083
Kamarol, M.
Conference name Electrical Machines and Systems, International Conference (18th : 2016 : Pattaya, Thailand)
Conference location Pattaya, Thailand
Conference dates 25-28 Oct. 2015
Title of proceedings ICEMS 2015: Proceedings of the 18th International Conference on Electrical Machines and Systems
Publication date 2016
Start page 1278
End page 1283
Total pages 6
Publisher IEEE
Place of publication Piscataway, N.J.
Keyword(s) Science & Technology
Technology
Engineering, Electrical & Electronic
Engineering
COGGING TORQUE
DESIGN
MOTORS
Summary Infinite numbers of virtual permanent magnet (PM) blocks can be used to represent the segmented magnets per magnet pole in any combination of slot and pole numbers of the semi-closed surface-mounted permanent magnet synchronous machines (PMSMs). This concept is exploited and developed in the two-dimensional (2D) analytical subdomain model to predict the motor performances. The model is able to facilitate the analytical investigation to determine the optimum magnet pole-arcs of each magnet segment and the optimum spacing between the magnet segments. This novel method is then applied to a three-phase, 12s/8p surface-mounted PMSM. It is found that for two segmented magnets (2SM) per magnet pole machine, the optimum settings are 147.6° elect. in each magnet pole and 11.2° elect. of airgap spacing between the magnet segments. By comparing the results to the optimum magnet pole-arc of one magnet segment (1SM) per magnet pole machine, the cogging torque and the total harmonic distortion of the phase back-EMF are significantly reduced by 89 % and 25 %, respectively, where both machines utilize the same PM volume. These analytical results are also validated by the 2D finite element method (FEM), where good agreement has been achieved.
ISBN 9781479988044
Language eng
DOI 10.1109/ICEMS.2015.7385236
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category E1 Full written paper - refereed
ERA Research output type E Conference publication
Copyright notice ©2015, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30083931

Document type: Conference Paper
Collection: Centre for Intelligent Systems Research
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