Elimination of Magnetically Induced Vibration Instability of Ring-Shaped Stator of PM Motors by Mirror-Symmetric Magnets

Purpose Permanent magnet (PM) motors are widely used due to the progress of PM materials. Smooth operation is one of the most crucial requirements in precision applications, but vibration instability can be induced by fluctuating magnetic forces. This work is aimed at the elimination of magnetically induced vibration instability.