The application of Halbach cylinders to brushless ac servo motors

Journal Article · Wed Jul 01 00:00:00 EDT 1998 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.706795· OSTI ID:649533

Atallah, K; Howe, D ^[1]

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1. Univ. of Sheffield (United Kingdom). Dept. of Electronic and Electrical Engineering

Halbach cylinders are applied to brushless ac servo motors. It is shown that a sinusoidal back-emf waveform and a low cogging torque can be achieved without recourse to conventional design features such as distributed windings and/or stator/rotor skew. A technique for imparting a multipole Halbach magnetization distribution on an isotropic permanent magnet cylinder is described, and it is shown that the torque capability of a Halbach ac servo motor can be up to 33% higher than conventional brushless permanent magnet ac motors.

• OSTI ID: 649533
• Report Number(s): CONF-980102-; ISSN 0018-9464; TRN: IM9825%%146
• Journal Information: IEEE Transactions on Magnetics, Vol. 34, Issue 4Pt1; Conference: 7. joint MMM-intermag conference, San Francisco, CA (United States), 6-9 Jan 1998; Other Information: PBD: Jul 1998
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ELECTRIC MOTORS
PERMANENT MAGNETS
MAGNETIZATION
DESIGN