Special winding to reduce space flux harmonics caused by fractional-slot

It is known that fractional-slot winding produces different harmonics from integral-slot winding. The authors studied space flux harmonics caused by fractional-slot winding and proposed a new winding method that reduces the low order space flux harmonic components (special winding method based on intersperse one coil winding), The advantage of this proposed winding method was confirmed using a model winding.