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Torque in permanent magnet couplings: Comparison of uniform and radial magnetization
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10.1063/1.3074108
/content/aip/journal/jap/105/5/10.1063/1.3074108
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/5/10.1063/1.3074108

Figures

Image of FIG. 1.
FIG. 1.

Representation of the geometry considered in three dimensions: two tile permanent magnets uniformly magnetized.

Image of FIG. 2.
FIG. 2.

Representation of the geometry considered in two dimensions: two tile permanent magnets uniformly magnetized.

Image of FIG. 3.
FIG. 3.

Representation of the torque transmitted between two tiles; thick line: the magnetization is uniform, dashed lines: the magnetization is radial; , , , , , , , , , and .

Image of FIG. 4.
FIG. 4.

Representation of the torque transmitted between two tiles; thick line: the magnetization is uniform, dashed lines: the magnetization is radial; , , , , , , , , , and .

Image of FIG. 5.
FIG. 5.

Representation of the torque transmitted between two tiles; thick line: the magnetization is uniform, dashed lines: the magnetization is radial; , , , , , , , , , and .

Image of FIG. 6.
FIG. 6.

Representation of the torque transmitted between two tiles; thick line: the magnetization is uniform, dashed lines: the magnetization is radial; , , , , , , , , , and .

Image of FIG. 7.
FIG. 7.

Representation of the mean loss of efficiency of the torque transmitted between two tiles uniformly magnetized versus the angular width of the tiles. This loss of torque is calculated in comparison with the torque transmitted between two tiles radially magnetized. The points correspond to Figs. 3–6. We have , , , , , and .

Image of FIG. 8.
FIG. 8.

Representation of the total torque transmitted between an eight tile rotor and an eight tile stator vs the angle . The tiles are either radially magnetized (dashed line) or uniformly magnetized (thick line) , , , , , and .

Tables

Generic image for table
Table I.

Definition of the magnetic pole surface densities located on the magnets.

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/content/aip/journal/jap/105/5/10.1063/1.3074108
2009-03-05
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Torque in permanent magnet couplings: Comparison of uniform and radial magnetization
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/5/10.1063/1.3074108
10.1063/1.3074108
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