A 10-pole 12-slot combination was selected due to its high winding factor compared to other pole-slot combinations for
FSCWs [12].
For a PMV machine with FSCW, a large number of slots will result in a small per slot cross-section area and a large number of PMs which further reduce utilization of PMs and improve the operating frequency.
However, in the PM machines with fractional-slot concentrated windings (FSCWs) [14], this rule is not very necessary.
The FSCW IPM machine falls in the category of machines with high slot harmonics.
Use of modular stator design can further reduce end-winding length of a FSCW which can also reduce copper loss by reducing winding effective length for a given dimension.
The stator incorporates dedicated FMPs and the FSCW arrangement.
Nevertheless, its FSCW arrangement helps reduce the torque ripple [16].
It may only be three years old, but
FSCW has made a name for itself that is well deserved, and we hear plans for next year's event are already in the pipeline.
