Abstract
In this paper, several conflgurations of a rotary magnetic refrigerator are proposed and investigated using three dimensional flnite element method simulations. Their electromagnetic performance is analyzed considering the magnetic ∞ux density, the forces and the torque. The rotor is a single permanent magnet while the stator is made of four refrigerant beds and a magnetic yoke. Multipole stators or rotors with 4, 6 and 8 refrigerant beds have been tested. The beds can be fltted or set at the inner surface of the yoke. The yoke can have smooth or salient poles. To minimize the magnetic torque, an original structure is proposed and tested. It is composed of two half-systems assembled with a 45 - angle shift between rotors or stators. Because of the large amount of data, a suitable procedure to achieve an efiective comparison between all conflgurations is established.
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