Abstract: This stator manufacturing method includes a step in which one of a skew-forming mechanism portion and a skew-forming jig presses, with the skew-forming jig, the skew-forming mechanism portion having a shape corresponding to the shape of a skew, to form a skew having a bent shape or a curved shape.

Abstract: A rotating electric machine includes: a stator having slots in which coils formed of conductive wires are stored; and a rotor facing the stator and having magnetic poles. The rotating electric machine has a fraction slot configuration or an integer slot configuration. The coils configure a mixed phase band group in which a first, second and third basic phase band groups are stacked in this order in a radial direction of the slots. In the mixed phase band group, a magnitude of magnetomotive force of each phase per pole is uniform, and, when the number of layers of the first, second and third basic phase band groups in the radial direction are denoted by m1, m2 and m3, respectively a relationship of 0<2×m2/(m1+m3) is satisfied.

Abstract: A rotor for a rotary electric machine, wherein: magnet insertion holes are formed, each defined by the plurality of through holes communicating with each other in the axial direction across the plurality of magnetic sheets; and each of the permanent magnets is twisted about the center axis so as to be placed into a corresponding one of the magnet insertion holes, each having opposite ends in the axial direction that are shifted from each other by an angle corresponding to the constant angle, from outside in the axial direction.

Abstract: A rotary electric machine includes a stator that has a plurality of slots accommodating a coil having a lap winding configuration made of a segment conductor, and a rotor that faces the stator and has a plurality of magnetic poles, and has a fractional slot configuration in which the number of slots per pole and phase is more than 1/2, and a denominator is equal to or more than 2 in an irreducible fraction expression. When the irreducible fraction expression of the number of slots per pole and phase is set as (a+b/c) where a indicates zero or a positive integer, and b and c indicate a positive integer and b<c, the coil for a laps is configured by an adjacent pole coil group, and the coil of a (a+1)th lap is configured by a continuous-pole coil group. The a laps are made in the same direction.

Abstract: A rotary electric machine includes: a stator having slots in each of which coils are accommodated; and a rotor having magnetic poles and facing the stator. The rotary electric machine has a fractional slot configuration. Basic phase band groups are arranged in parallel from a bottom to an opening of each slot, the basic phase band groups each including basic phase bands arranged for each pole and each having different phases in a rotation direction of the rotor, and each of the basic phase band groups is shifted by n times (n is zero or a natural number) a number of slots in a direction along the rotation direction with respect to the basic phase band group at the bottom of each slot, and, when n is an odd number, a phase band group arrangement constituted by two layers is reversed in the depth direction.

Abstract: A rotary electric machine includes a stator having slots, and a rotor having magnetic poles. When an irreducible fraction expression of the number of slots per pole and phase is set as (a+b/c), the coil for a laps is configured by an adjacent pole coil group, and the coil of a (a+1)th lap is configured by a continuous-pole coil group. In the adjacent pole coil group, the pole coil that is not interposed between adjacent-pole-connection same layer connection portions and the pole coil interposed therebetween are alternately arranged. The continuous-pole coil group is configured only by the pole coil that is not interposed therebetween when the number of blanks is all odd, and by the pole coil that is not interposed therebetween and the pole coil interposed therebetween when the number of blanks is all even or when odd and even numbers are mixed as the number of blanks.

Abstract: This stator manufacturing method includes a step in which one of a skew-forming mechanism portion and a skew-forming jig presses, with the skew-forming jig, the skew-forming mechanism portion having a shape corresponding to the shape of a skew, to form a skew having a bent shape or a curved shape.

Abstract: A rotating electric machine having a fraction slot configuration in which the number of slots per pole per phase is not an integer includes: a stator that includes a stator core provided with a plurality of slots, and a stator winding having a plurality of coil sides accommodated in the plurality of slots and a plurality of coil ends connecting the same side end parts of the plurality of coil sides to each other; and a movable element that is supported to be movable with respect to the stator, and includes a movable element core, and a plurality of movable element magnetic poles provided in the movable element core. The stator winding includes a plurality of basic coils in which the magnitude of magnetomotive force generated by the plurality of coil sides forming the one-phase band is uniform in each of the plurality of movable element magnetic poles.

Abstract: A rotating electrical machine with a fractional slot structure includes concentrically wound stator coils, and a method of manufacturing the same. In a rotating electrical machine, a plurality of unit coils included in the stator coil are allocated into a first pole coil and a second pole coil in units of slots that oppose a pair of movable element magnetic poles. Further, each pole pair coil forming a plurality of phase coils is provided with two types of the unit coils, namely a full-coil and a half-coil. In addition, in each pole pair coil, the coil pitches between pairs of coil sides of the plurality of unit coils forming said pole pair coil are different from one another, and each pole pair coil is provided with one half-coil.

Abstract: A rotary electric apparatus having a fractional slot configuration in which a number of slots per every pole and per every phase is not an integer includes: a stator which includes a stator core formed with a plurality of slots, and a stator winding having a plurality of coil sides accommodated in the plurality of slots and a plurality of coil ends connecting each of same side end portions of the plurality of coil sides; and a mover which is movably supported with respect to the stator, and includes a mover core and a plurality of mover magnetic poles installed in the mover core.

Abstract: A rotating electric machine includes: a stator having slots in which coils formed of conductive wires are stored; and a rotor facing the stator and having magnetic poles. The rotating electric machine has a fraction slot configuration or an integer slot configuration. The coils configure a mixed phase band group in which a first, second and third basic phase band groups are stacked in this order in a radial direction of the slots. In the mixed phase band group, a magnitude of magnetomotive force of each phase per pole is uniform, and, when the number of layers of the first, second and third basic phase band groups in the radial direction are denoted by m1, m2 and m3, respectively a relationship of 0<2×m2/(m1+m3) is satisfied.

Abstract: A rotating electrical machine includes a stator including a plurality of slots on which conductive wire is wound, and a rotor facing the stator and including a plurality of magnetic poles, wherein the rotating electrical machine is configured of fractional slot in which a denominator of an irreducible fraction obtained by dividing a number of the slots of the stator by a number of phases and a number of the magnetic poles of the rotor is equal to or greater than four, and ratio of magnitude of magnetomotive force of each phase is even in respective poles of the magnetic poles of the rotor.

Abstract: A rotary electric machine in which a moving direction of the mover relative to the stator as a first direction, an opposing direction in which the stator and the mover oppose to each other as a second direction and a direction perpendicular to any direction of the first direction and the second direction as a third direction are defined and one of the stator and the mover includes a first reference portion which is a reference to skew and a continuous skew portion arranged in the third direction by being gradually shifted in the first direction relative to the first reference portion. The maximum value of a skew amount of the continuous skew portion relative to the first reference portion is set to have the maximum value of the relative skew amount between the stator and the mover to be one slot pitch worth of the plurality of slots.

Abstract: A rotor for a rotary electric machine, wherein: magnet insertion holes are formed, each defined by the plurality of through holes communicating with each other in the axial direction across the plurality of magnetic sheets; and each of the permanent magnets is twisted about the center axis so as to be placed into a corresponding one of the magnet insertion holes, each having opposite ends in the axial direction that are shifted from each other by an angle corresponding to the constant angle, from outside in the axial direction.

Abstract: A three-phase rotating electrical machine includes a stator including a stator core provided with a plurality of teeth and a plurality of slots, and winding, the three-phase rotating electrical machine including a rotor including a rotor core and a north magnetic pole and a south magnetic pole, the three-phase rotating electrical machine including a fractional slot configuration, the rotor core including a north magnetic pole acting portion, a south magnetic pole acting portion, a magnetic pole boundary dividing the north magnetic pole acting portion and the south magnetic pole acting portion in the circumferential direction, and a magnetic resistance portion, the magnetic resistance portion restricting the magnetic flux from passing through.

Abstract: A rotating electrical machine with a fractional slot structure includes concentrically wound stator coils, and a method of manufacturing the same. In a rotating electrical machine, a plurality of unit coils included in the stator coil are allocated into a first pole coil and a second pole coil in units of slots that oppose a pair of movable element magnetic poles. Further, each pole pair coil forming a plurality of phase coils is provided with two types of the unit coils, namely a full-coil and a half-coil. In addition, in each pole pair coil, the coil pitches between pairs of coil sides of the plurality of unit coils forming said pole pair coil are different from one another, and each pole pair coil is provided with one half-coil.

Abstract: A rotary electric apparatus having a fractional slot configuration in which a number of slots per every pole and per every phase is not an integer includes: a stator which includes a stator core formed with a plurality of slots, and a stator winding having a plurality of coil sides accommodated in the plurality of slots and a plurality of coil ends connecting each of same side end portions of the plurality of coil sides; and a mover which is movably supported with respect to the stator, and includes a mover core and a plurality of mover magnetic poles installed in the mover core.

Abstract: A rotating electric machine having a fraction slot configuration in which the number of slots per pole per phase is not an integer includes: a stator that includes a stator core provided with a plurality of slots, and a stator winding having a plurality of coil sides accommodated in the plurality of slots and a plurality of coil ends connecting the same side end parts of the plurality of coil sides to each other; and a movable element that is supported to be movable with respect to the stator, and includes a movable element core, and a plurality of movable element magnetic poles provided in the movable element core. The stator winding includes a plurality of basic coils in which the magnitude of magnetomotive force generated by the plurality of coil sides forming the one-phase band is uniform in each of the plurality of movable element magnetic poles.

Abstract: A rotary electric machine includes a stator including a stator winding and a rotor movable relative to the stator in a first direction and arranged to face the stator in a second direction, the rotor including plural pairs of rotor poles at a rotor core, each pair of the plural pairs of rotor poles including different polarities from each other, the stator including a fractional slot configuration where the number of slots per pole per phase is a non-integer, the stator winding being wound by a fractional slot winding, one of a stator core and the rotor core including a base portion and either a single position portion or plural position portions which is connected to the base portion in a third direction and which is displaced relative to the base portion in the first direction, the third direction being orthogonal to the first direction and the second direction.

Abstract: Reduction in drive torque of a permanent magnet motor having a skew arrangement is to be suppressed. A permanent magnet motor has a rotor including a rotor core formed as a stacked assembly of a plurality of electromagnetic steel sheets stacked one upon another and magnets accommodated within accommodation holes formed inside the rotor core. The rotor core has a skew arrangement including a first core and a second core that are displaced relative to each other in a circumferential direction relative to an axis of the rotor. The accommodation hole of the first core accommodates a first magnet of the magnets. The accommodation hole of the second core accommodates a second magnet of the magnets. The first magnet and the second magnet are opposed to each other via a first gap therebetween in the direction of the axis.