DocumentCode
1275235
Title
Ferrofluids in electric motors-a numerical process model
Author
Nethe, A. ; Scholz, T. ; Stahlmann, H.-D. ; Filtz, M.
Author_Institution
Lehrstuhl Theor. Elektrotechnik, Technische Univ. Cottbus, Germany
Volume
38
Issue
2
fYear
2002
fDate
3/1/2002 12:00:00 AM
Firstpage
1177
Lastpage
1180
Abstract
The number of technical applications of ferrofluids is constantly increasing. Their main purpose in terms of electric effects is to fill air gaps in magnetic circuits in order to lower the magnetic resistance. In this paper, a method to increase the efficiency of electric motors by filling the gap between the rotor and stator with a ferrofluid is proposed. The magnetic field and torque in a simplified model of an electric motor are calculated using orthogonal expansion
Keywords
air gaps; electric motors; machine theory; magnetic circuits; magnetic fields; magnetic fluids; rotors; stators; torque; air gaps; electric motors; electromagnetic analysis; ferrofluids; magnetic circuit; magnetic circuits; magnetic field; magnetic resistance reduction; numerical process model; orthogonal expansion; rotor; stator; torque; Air gaps; Electric motors; Electric resistance; Filling; Magnetic circuits; Magnetic fields; Numerical models; Rotors; Stators; Torque;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.996301
Filename
996301
Link To Document