Magnet retention arrangement for high speed rotors
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United States of America Patent
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-
Sep 17, 2002
Grant Date -
N/A
app pub date -
Nov 2, 2001
filing date -
Nov 2, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In the rotor arrangement disclosed in the specification a rotor has a central shaft with a surrounding rim to which a circumferential array of pole pieces is mechanically affixed by screws. An array of permanent magnets each mounted between an adjacent pair of pole pieces is radially retained in position by a slot wedge having edges shaped to interlock with the outer side portions of the adjacent pole pieces. The outer surfaces of the pole pieces and slot wedges form a uniform cylindrical outer surface which is covered by an outer wrap of fiber reinforced polymer material to assure that the magnets are retained radially in position.
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