Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
James M. Nagashima1
Khwaja M. Rahman1
Date of Patent
January 6, 2009
1Patent Application Number
108674021
Date Filed
June 14, 2004
1Patent Citations Received
Patent Primary Examiner
Patent abstract
A machine includes a stator and a rotor having a plurality of poles. Each pole is formed at least in part by a plurality of permanent magnets recessed within the rotor at a predetermined distance from an outer surface of the rotor. The distance is predetermined to minimize rotor flux variation near the outer surface during rotation of the rotor relative to the stator. Eddy current losses are thereby reduced.
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