Patent ID: 9077216
Filing Date: 2015-07-07
Classification: H02K

Abstract:
1. A stator for a rotating electrical machine comprising: a stator core with a plurality of slots in which a width of the slot opening that opens in a radial direction of the core is narrower than a width of a portion of the semi-open slots located deeper than the slot opening of the semi-open slots; and coils attached to the stator core, wherein the coils are each structured by winding a covered conductor wire bundle around the stator core, the covered conductor wire bundle is structured by covering an outer circumference of a conductor wire bundle with a flexible insulating cover, the conductor wire bundle consisting of an assembly of a plurality of conductor wires, the conductor wires each having a circular cross-section orthogonal to a direction along which the conductor wires extend, the plurality of conductor wires can relatively move inside the insulating cover, shapes of cross-sections of the covered conductor wire bundles orthogonal to the extending direction of the covered conductor wire bundles being deformable by relatively moving the plurality of conductor wires inside the insulating cover, the conductor wires being bare wires, the flexible insulating cover tying the bare wires to each other, with the bare wires being in a twisted state, and a plurality of the covered conductor wire bundles are disposed in each of the slots such that adjacent pairs of the covered conductor wire bundles are in contact with each other by deforming shapes of cross-sections of the covered conductor wire bundles orthogonal to the extending direction of the covered conductor wire bundles by relatively moving the plurality of conductor wires inside the insulating cover so that the shapes of cross-sections of the covered conductor wire bundles conform to the shape of the slots in the portion of the slots located deeper than the slot opening.