FIELD: electrical engineering. SUBSTANCE: three-phase fractional (q= 0.75) winding of stator is dropped in slots. Slots are divided by width with insulation "boxes" into two similar elementary slots. Winding is composed of 3p coil groups with two concentric coils. Winding has pitches over elementary slots Yes 5 and 3 and number of turns 2Wc and Wc. Start of each subsequent coil group is displaced relative to start of preceding coil group by three elementary slots. Coil groups are connected in series aiding in phase. EFFECT: reduced manufacturing cost, enhanced productivity. 7 dwg
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