Title :
Analytical modelling of parasitic force in permanent magnet machines accounting for slotting effect
Author :
Wu, L.J. ; Zhu, Z.Q. ; Staton, D. ; Popescu, Mihail ; Hawkins, D.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK
Abstract :
Based on the subdomain field model accounting for tooth-tips, the force distribution and unbalanced magnetic force of surface-mounted PM machines are analytically calculated respectively for open-circuit only, armature reaction only and on-load. The finite element results confirm that the developed model has excellent accuracy, while the complex permeance model shows a large error in the predicted unbalanced magnetic force and lowest spatial order harmonic of the force distribution, especially on light load.
Keywords :
finite element analysis; permanent magnet machines; armature reaction operation; complex permeance model; finite element results; force distribution; on-load operation; open-circuit operation; parasitic force analytical modelling; permanent magnet machines; slotting effect; spatial order harmonic; subdomain field model; surface-mounted PM machines; tooth-tips; unbalanced magnetic force; Analytical models; force distribution; permanent magnet machines; unbalanced magnetic force;
Conference_Titel :
Power Electronics, Machines and Drives (PEMD 2012), 6th IET International Conference on
Conference_Location :
Bristol
Electronic_ISBN :
978-1-84919-616-1
DOI :
10.1049/cp.2012.0276
