Permanent magnet arrangement for generator rotor
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United States of America Patent
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Dec 25, 2012
Grant Date -
Jun 3, 2010
app pub date -
Feb 2, 2010
filing date -
Aug 20, 2009
priority date (Note) -
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Abstract
An electric generator rotor having one or more permanent magnets coupled thereon. The permanent magnets provide a constant magnetic field in the rotor at all times, therein minimizing the effect of rotor residual magnetism on the start-up characteristics of the electric generator. The type and placement of the one or more permanent magnets on the rotor and/or magnetic field confinement techniques may be utilized to control spatial distribution of magnetic field within the rotor.
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