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Design and Analysis of an Electrodynamic Bearing with Magnets Arranged in Halbach Array

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Document pages: 4 pages

Abstract: This paper illustrates the working principle of an electrodynamic bearing and investigates the effect of variation of rotational speed, magnet width, its orientation and air gap on the bearing forces. In a case study, the radial force has also been checked using finite element methods for the permanent magnets arranged in Halbach array. The focus of the investigation is to compare the two models and show how the resultant bearing force responds to a change in rotational speed for a particular off-centre displacement and the corresponding changes observed in the Halbach array model from the permanent magnet counterpart. Analysis results show that the magnetic forces are depended on rotational speeds, air gap and magnet width as well as its arrangement.

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