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Description
This paper presents a comparison of cylindrical and plane air gap magnetic couplings in which the tile permanent magnet polarizations can be either radial or tangential or axial.The expressions of the torque transmitted between the two rotors of each coupling are determined by using the finite element method . For this system, a Halbach permanent magnet (PM) array structure is applied as a high torque density design method for a mangetic coupling. In addition, the high torque density magnetic coupling designing requires computation of the PM size by irreversible demagnetisation considering the tempera-ture environment, magnetic coupling position, and magnetic optimum design process. Finally, the validity and superiority of the optimized design are confirmed by manufacturing the prototype model and performing the experiment.
