Permanent magnet synchronous motor
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United States of America Patent
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Apr 5, 2005
Grant Date -
Sep 2, 2004
app pub date -
Mar 5, 2004
filing date -
Jul 16, 1999
priority date (Note) -
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Abstract
A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core and rotatable relative to the stator, a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their opposite ends shortcircuited by respective shortcircuit rings to form a starter cage conductor. The rotor also has a plurality of magnet retaining slots defined therein at a location on an inner side of the conductor bars, in which hole permanent magnets are embedded.
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