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This paper proposes a ferrite dual-stator spoke type Vernier permanent magnet machine (DSSVPMM) using a drum rotor for low speed applications. The drum rotor offers supports on both sides of the machine, significantly improving the rotor alignment, the rotor rigidity and stability. The inner stator windings are completely removed and shifted to the outer stator so that the heat produced by the inner...
This paper focuses on the design and the analysis of an ultrahigh speed axial-flux permanent magnet (AFPM) machine for an aerospace flywheel energy storage system. The superiority of the proposed AFPM machine is the material-efficient PM shape, which contributes to obtain a sinusoidal back electromotive force (back EMF) and, hence, reduces the torque pulsations of the machine such as torque ripple...
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