NDLI: Stator design of a multi-consequent-pole bearingless motor with toroidal winding

Content Provider	IEEE Xplore Digital Library
Author	Nakamura, R. Kamiya, K. Chiba, A. Asama, J. Fukao, T.
Copyright Year	2009
Description	Author affiliation: Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8501, Japan (Nakamura, R.; Kamiya, K.; Chiba, A.) \|\| Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, 432-8561, Japan (Asama, J.) \|\| Motor Solution, Co. Ltd., 2641 Yamazaki, Noda, Chiba 278-8501, Japan (Fukao, T.)
Abstract	Multi-consequent-pole bearingless motors have been developed for low rotational speed and swinging stages used in monitoring system and vacuum process chambers. The motor has flat shape and two degrees of freedom are actively controlled in the radial x-y directions. The suspension windings have a novel structure of a toroidal coil wound around the stator yoke. The structure realizes a short axial length with compact coil end-windings. In this paper, the toroidal winding design is compared with conventional distributed winding design. The design process indicates a consideration of magnetic saturation in the stator yoke with three dimensional finite element analysis. A special design consideration for the stator yoke is required because of significant leakage flux caused by the toroidal winding. It is shown that a compact axial length is realized. It is also shown that a wide cross sectional area is required in the stator yoke compared with conventional distributed windings.
Starting Page	2403
Ending Page	2408
File Size	1988486
Page Count	6
File Format	PDF
ISBN	9781424428939
DOI	10.1109/ECCE.2009.5316532
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coils Process design Distributed windings Magnetic flux Multi-pole Wounds Bearingless motor Toroidal windings Shape control Vacuum systems Magnetic bearing Stator windings Disk-shaped rotor Monitoring Magnetic levitation Saturation magnetization
Content Type	Text
Resource Type	Article

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