DocumentCode :
2318738
Title :
Bearingless Five-Axis Rotor Levitation with Two Pole Pair Separated Conical Motors
Author :
Kascak, Peter ; Jansen, Ralph ; Dever, Timothy ; Nagorny, Aleksandr ; Loparo, Kenneth
Author_Institution :
Univ. of Toledo, Cleveland, OH, USA
fYear :
2009
fDate :
4-8 Oct. 2009
Firstpage :
1
Lastpage :
9
Abstract :
In some high performance applications, such as high speed rotating machinery, systems where access for maintenance is limited, or operating environments with extreme temperatures and pressures, motors without mechanical bearings would be preferred. This paper presents the theory, simulation, and lab results of a new type of fully magnetically levitated bearingless motor. The motors are wound without internally connecting the pole pairs, and force is controlled by varying rotor reference frame d-axis current to each pole pair. This in turn raises or lowers the flux caused by the permanent magnets, creating a flux imbalance on the periphery of the rotor, which in turn creates a net force on the rotor. The conical shape of the motor allows forces to be created in both radial and axial directions, allowing these motors full 5-axis levitation.
Keywords :
electric motors; magnetic bearings; magnetic levitation; bearingless five axis rotor levitation; high speed rotating machine; magnetically levitated bearingless motor; two pole pair separated conical motors; Force control; Machinery; Magnetic flux; Magnetic levitation; Magnetic separation; Mechanical bearings; Permanent magnet motors; Rotors; Temperature; Wounds;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industry Applications Society Annual Meeting, 2009. IAS 2009. IEEE
Conference_Location :
Houston, TX
ISSN :
0197-2618
Print_ISBN :
978-1-4244-3475-6
Electronic_ISBN :
0197-2618
Type :
conf
DOI :
10.1109/IAS.2009.5324866
Filename :
5324866
Link To Document :
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