DocumentCode
3210284
Title
Unbalanced Magnetic Pull in Fractional-Slot Brushless PM Motors
Author
Dorrell, David G. ; Popescu, Mircea ; Cossar, Calum ; Ionel, Dan
Author_Institution
Dept of Electron. & Electr. Eng., Glasgow Univ., Glasgow
fYear
2008
fDate
5-9 Oct. 2008
Firstpage
1
Lastpage
8
Abstract
This paper reports on an investigation into the unbalanced magnetic pull in brushless PM motors due to either magnetic asymmetry or rotor eccentricity. Several machines are investigated. These have different slot and pole number combinations. Some of the windings contain sub-harmonics and these are found to be more susceptible to UMP when there is rotor eccentricity and also to produce vibrating UMP. Consequent rotor poles are also found to produce high UMP under rotor eccentricity conditions.
Keywords
brushless DC motors; machine windings; permanent magnet motors; rotors; brushless PM motors; fractional-slot motors; magnetic asymmetry; permanent magnet motors; rotor eccentricity; rotor poles; unbalanced magnetic pull; Air gaps; Analytical models; Brushless motors; Frequency; Machine windings; Magnetic analysis; Magnetic flux; Permanent magnet motors; Rotors; Synchronous motors;
fLanguage
English
Publisher
ieee
Conference_Titel
Industry Applications Society Annual Meeting, 2008. IAS '08. IEEE
Conference_Location
Edmonton, Alta.
ISSN
0197-2618
Print_ISBN
978-1-4244-2278-4
Electronic_ISBN
0197-2618
Type
conf
DOI
10.1109/08IAS.2008.63
Filename
4658851
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