Torque in nested Halbach cylinders
Citation:T. R. N?_ Mh?_och??in, J.M.D. Coey, D. L. Weaire, S.M. McMurry 'Torque in nested Halbach cylinders' in IEEE Transactions on Magnetics, 35, (5), 1999, pp 3968 - 3970
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Permanent magnet variable flux sources are produced by rotating two nested N-segment, permanent magnet, Halbach cylinders. Torque is primarily an end effect, determined by field non-uniformities due to the fmite length and' segmented structure of the cylinders. Due to symmetry, one cylinder experiences zero torque In a uniform applied field. Experiment and numerical simulation reveal that the torque is composed of a dominant term of frequency 1/(2n) and harmonics at ( k N i l)/(Zn), where k is an integer.
Series/Report no:IEEE Transactions on Magnetics
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