Abstract: Conductor terminals of a plurality of conductor wires that constitute a stator winding each extend outward at a first axial end of a stator core, and among the conductor terminals, conductor terminals through which same-phase electric power flows are respectively connected by crossover wires, and circumferential regions that are occupied by the crossover wires are separated from each other in a circumferential direction.

Abstract: Provided is an armature for a rotating electrical machine, which is capable of improving heat dissipation performance of an edgewise coil to enhance efficiency of the rotating electrical machine. The armature for a rotating electrical machine includes: a core including a yoke section and a tooth section that protrudes from the yoke section; an edgewise coil to be inserted onto the tooth section through intermediation of an insulating member, the edgewise coil being formed by winding a rectangular wire having a rectangular conductor cross-section through edgewise bending; and a heat transfer member filled into a gap between the tooth section and the edgewise coil. The armature has different gaps formed at two regions between the tooth section and a long side of the edgewise coil.

Abstract: In the electric machine according to the present invention, conductor wires are housed inside slots so as to be arranged into multiple layers in one column so as to contact each other in a slot depth direction in each column such that a longitudinal direction of a long side of an oblong cross section of a conductor portion faces in the slot depth direction, and a thickness of a portion of an insulating coating that is formed on a surface of the conductor portion that faces in the slot depth direction is thinner than a thickness of a portion of the insulating coating that is formed on a surface of the conductor portion that faces in a direction of slot arrangement.

Abstract: Provided is a fixing structure for fixing a wire connection plate including a busbar (9) having an annular shape, and a wire connection plate holder (10) for holding the busbar (9). The fixing structure includes a frame (5) having a cylindrical shape, for accommodating the wire connection plate therein, and a sheet metal member (12) for fixing the wire connection plate. One end of the sheet metal member (12) is fixed on a flange (4) of the frame (5), and another end of the sheet metal member (12) presses an end surface of the wire connection plate in an axial direction of the frame (5), to thereby fix the wire connection plate. The wire connection plate is fixed by elasticity of the sheet metal member (12), and hence the wire connection plate can be held even under application of impact load.

Abstract: In this method for manufacturing an armature winding for an electric machine, a rectangular conductor wire is wound helically by bending and shaping linking portions between rectilinear portions and coil ends to set angles while feeding the rectangular conductor wire, by repeating steps in which the rectangular conductor wire is fed by a set amount of feeding, the rectangular conductor wire is gripped and fixed by first through fourth chucks, the rectangular conductor wire is bent by pressing a first former near a root of the rectangular conductor wire, and gripping and fixing of the rectangular conductor wire by the first through fourth chucks is released.

Abstract: A U-phase coil that constitutes the armature winding includes four (first through fourth) small coil groups U101, U102, U201, and U202 that make approximately one round circumferentially that are formed by connecting in series in order of circumferential arrangement winding bodies that are housed in slot pairs that are separated by 360 electrical degrees. The U-phase coil is configured by consecutively or alternately connecting the four first through fourth small coil groups U101, U102, U201, and U202 in series such that two of the small coil groups that are housed in identical slots are positioned.

Abstract: A U-phase coil that constitutes an armature winding includes four (first through fourth) small coil groups U101, U102, U201, and U202 that make one round circumferentially, that are formed by connecting in series in order of circumferential arrangement winding bodies that are housed in slot pairs that are separated by 360 electrical degrees. The U-phase coil is configured into a parallel circuit in which the first and fourth small coil groups U101 and U202, which are connected in series, and the second and third small coil groups U102 and U201, which are connected in series, are connected in parallel by linking together winding ends within a radially Inner winding end group using crossover wires 711 and 721, and by linking together winding ends within a radially outer winding end group using a crossover wire 821.

Abstract: A rotor core is configured by arranging divided rotor cores coaxially so as to be in close contact with each other such that magnetic pole centers are aligned axially, auxiliary grooves are recessed into respective outer circumferential surfaces of the divided rotor cores between respective magnetic poles so as to have plane symmetry relative to a plane that includes a center position between the magnetic poles and a central axis of the divided rotor cores, and so as to extend from a first axial end to a second axial end of the divided rotor cores, the auxiliary grooves recessed into an outer circumferential surface of an identical divided rotor core have an identical groove shape, and groove widths of the auxiliary grooves are set such that predetermined orders of harmonic components of cogging torque that result from each of the divided rotor cores mutually cancel each other out.

Abstract: Four layers of first coil rows formed by arranging first coil ends at a pitch of one slot in a circumferential direction are arranged in a radial direction to configure a first coil end group, three layers of second coil rows formed by arranging second coil ends at a pitch of one slot in a circumferential direction are arranged in a radial direction to configure a first coil end group, a cylindrical first insulating paper is housed inside the first coil end rows and inside the second coil end rows, and a cylindrical second insulating paper is housed between the first coil end rows and between the second coil end rows.

Abstract: A stator 20 of the invention includes multiple bus bars 24 (241 through 244) formed in an annular shape and laminated in a radial direction and an insulation member 25 covering both radial side surfaces 24b and both axial end faces 24a and 24c of each bus bar 24, and the insulation member 25 contains a sheet-like insulation member 25a covering the both radial side surfaces 24b and the axial end face 24c of each bus bar 24.

Abstract: A stator winding is formed by mounting winding bodies individually into pairs of slots of a stator core separated by a predetermined number of slots, the winding bodies each being formed by winding a jointless, continuous conductor wire coated with insulation for m turns into a helical shape such that end portions of rectilinear portions are linked by coil ends, where m is a natural number that is greater than or equal to two, and the coil ends include a top portion that displaces by a predetermined amount in a radial direction at an approximately central portion between the linked rectilinear portions, the radial displacement at the top portions is approximately a×d, where a is a natural number that is greater than or equal to 1 and less than or equal to (m?1), and d is a radial thickness of the rectilinear portions.

Abstract: A rotating electric machine includes a rotor including: a rotor core divided into blocks in an axial direction, the blocks being arranged to have a phase angle therebetween in a circumferential direction, the rotor core having magnet through holes arrayed in the circumferential direction and formed in an outer circumferential region; and permanent magnets inserted into the magnet through holes. The magnet through hole includes: a magnet insertion portion into which the permanent magnet is inserted; and a non-magnetic portion provided on an outer side of the magnet insertion portion in the circumferential direction. A bridge portion is formed between the outer circumferential surface and an outer circumferential inner wall of the non-magnetic portion. A bridge angle, which is an angle between both circumferential ends of the bridge portion with a rotation center of the rotor core set as a vertex, is larger than a skew angle.

Abstract: An insulator includes: a trunk portion that is interposed between a tooth and a stator coil; and a first flange portion that is disposed on the trunk portion so as to be adjacent to the stator coil in a radial direction of a stator core. A notch portion is disposed on a flange protruding portion of the first flange portion that protrudes from the stator core in the axial direction of the stator core from an outer circumferential portion of the flange protruding portion toward the trunk portion. A holder that has a holder main body that is disposed on the notch portion is mounted onto the flange protruding portion. A temperature sensor is held between the holder main body and the stator coil.

Abstract: A permanent magnet embedded. rotary electric machine includes: permanent magnets 23 respectively accommodated in the magnet accommodation holes 25. In the magnet accommodation hole 25, a portion of each permanent magnet 23 corresponding to the radially outer side of the rotor iron core 21 is fixed to the rotor iron core 21, and a refrigerant passage 27 is formed, in a shaft direction of the rotor iron core 21, between the rotor iron core 21 and a portion of the permanent magnet 23 corresponding to the radially inner side of the rotor iron core 21. Protrusions 28 are provided, perpendicularly to a passing direction of a refrigerant, on an exposed portion 21a of the rotor iron core 21 in the refrigerant passage 27.

Abstract: A rotary electric machine includes: a stator around which a coil is wound; a frame which fixes the stator; a rotor which faces the stator via a slight air gap; a shaft which is fixed to the rotor and is rotatably and removably supported via a bearing; and a bracket which supports the bearing inside a bearing box. The rotary electric machine includes: an insulating member which is mounted inside the bearing box of the bracket; a metal holder which is mounted inside the insulating member with a predetermined clearance with respect to an outer ring of the bearing, and supports the bearing; and a pressing body which is mounted between the side surface of the metal holder and the side surface of the outer ring of the bearing.

Abstract: A rotor includes: a plurality of first magnetic pole members that are disposed such that first end portions and second end portions are respectively coupled magnetically and mechanically to a first magnetic end plate and to a second magnetic end plate and so as to be separated from a magnetic intermediate plate magnetically; a plurality of second magnetic pole members that are disposed such that intermediate portions are coupled magnetically and mechanically to the magnetic intermediate plate and so as to be separated from each of the magnetic end plates magnetically; a plurality of permanent magnets that are disposed between the first and second magnetic pole members in a circumferential direction; and a nonmagnetic holding body for separating the first magnetic pole members magnetically from the magnetic intermediate plate, and for separating the second magnetic pole members magnetically from the magnetic end plates.

Abstract: Permanent magnets that constitute the single magnetic poles are constituted by n permanent magnet segments, the n permanent magnet segments being configured such that shapes and directions of orientation thereof have mirror symmetry relative to a plane that passes through a magnetic pole center and that includes a central axis of the rotor core, and being oriented such that a permanent magnet segment that is further away from the magnetic pole center in a circumferential direction has a smaller angle of orientation, and the permanent magnet segment that is positioned further away from the magnetic pole center in the circumferential direction being produced so as to have an approximately fan-shaped cross-sectional shape in which a radial width is wider than a circumferential width.

Abstract: Provided is a rotor structure of a rotary electric machine, which is easily adaptable to offer a wide variety of products. The rotor structure of a rotary electric machine includes at least: a rotor shaft (3); a rotor core including a first rotor core section (15) and a second rotor core section (17); a boss section (9); and a pressurizing section. The second rotor core section and the boss section are arranged on an outer circumference of the rotor shaft. The first rotor core section is arranged on an outer circumference of the boss section. The pressurizing section is positioned on an axially outer side of the rotor core. The second rotor core section is pressurized by an abutment surface of the boss section. The first rotor core section arranged on the boss section is pressurized by the pressurizing section.

Abstract: The rotary electric machine includes: a stator that includes: a stator core; and a stator coil; a ring member that accommodates the stator so as to hold the stator core in an internally fitted state; a housing case formed into a floored cylindrical shape with an opening at a first end portion, and that accommodates the ring member and the stator; and a cover mounted onto the first end portion of the housing case so as to cover the opening of the housing case, wherein a first end portion of each of the ring member and the housing case is fixed by fastening to the cover such that a fastening direction of each is oriented in an axial direction, and a second end portion of the ring member is fitted into and held by the housing case by means of an interfitting member.

Abstract: A rotary electric machine includes a rotor, a stator having coils wound to surround the rotor, a cylindrical ring member fixedly mounted on the stator by shrinkage fitting, and a frame disposed on the outside of the ring member with a gap created in between. The distance of the gap varies as a result of thermal expansion of the stator and the ring member. An outer surface of the ring member goes into contact with the frame when the stator and the ring member thermally expand, whereby the stator and the ring member are efficiently cooled.