Permanent magnet arrangement for an electrical machine
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United States of America Patent
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Aug 21, 2012
Grant Date -
Feb 2, 2012
app pub date -
Oct 12, 2011
filing date -
Jan 11, 2010
priority date (Note) -
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Abstract
A permanent magnet arrangement for an electrical machine comprises a support structure for carrying magnetic flux and a pole assembly fixed to the support structure. The pole assembly comprises a magnet pole comprising at least one piece of permanent magnet material and a magnet carrier on which the magnet pole is mounted and which provides a magnetic flux path between the magnet pole and the support structure. The permanent magnet arrangement further comprises a sleeve containing the magnet pole and at least part of the magnet carrier. The magnet carrier is secured to the support structure to fix the pole assembly to the support structure and the sleeve is clamped to the support structure by the magnet carrier. A method for assembling the permanent magnet arrangement is also described.
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