Stator for rotating electrical machine

Abstract

To reduce the number of assembly times while reducing spatial harmonics.SOLUTION: A rotary electric machine stator includes a stator core, and a stator coil in which a plurality of triple-wound coils concentrically including three coil portions in a closed coil shape when viewed in the radial direction are wound around the stator core for each phase. Each of the three coil portions in one triple-wound coil forms a closed coil shape by slot insertion portions on both sides in the circumferential direction, and transition portions on both sides in the axial direction, and the three coil portions include a first coil portion having the longest circumference, a second coil portion having a circumference shorter than that of the first coil portion by a pitch of four slots, and a third coil portion having a circumference shorter than that of the first coil portion by a pitch of two slots, and the plurality of triple-wound coils are inserted into respective corresponding slots in such a manner in which the first coil portions are radially adjacent and the second coil portions are radially adjacent.SELECTED DRAWING: Figure 1

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