Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michael W. Degner0
Feng Liang0
Franco Leonardi0
Wei Wu0
Date of Patent
May 19, 2015
Patent Application Number
14010208
Date Filed
August 26, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
An internal permanent magnet machine has multiple rotor sections, each section having multiple rotor laminations. Permanent magnets are placed asymmetrically in lamination openings to attenuate oscillations in torque caused by harmonic components of magnetic flux. Asymmetry is achieved by placing adjacent permanent magnets or magnet sets on the rotor periphery with different rotor magnetic pole arc angles.
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