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Stator permanent magnet (PM) motors, namely, flux-switching PM (FSPM) motor, double salient PM (DSPM) motor and flux reversal PM (FRPM) motor, have attracted more and more attentions for a lot of fields. In despite of the different PMs location, the three kinds of stator PM motors share several features [1] in the structure, such as both of the PMs and armature windings are housed in the stator, the...
A bearingless motor is a new type of motor with some remarkable characteristics such as compact structure, high power density, high speed and high power [1], [2]. However, the existence of higher harmonic will degrade the precision of mathematical model and the stability of closed-loop control system [3]. Short-pitch windings can effectively inhibit higher harmonic in MMF and EMF [4]. From this point...
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