Mitsubishi Electric Corporation

Yutaro Shirai

Shinichiro Yoshida

Masaya Inoue

Hiroyuki Akita

Shogo Okamoto

Hironori Tsuiki

Akihiro Yamamura

Atsushi Sakaue

Shuichi Tamura

Koichi Ojima

Hirohisa Yokota

Daisuke Shijo

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.

Armature of rotating electrical machine and method for manufacturing same

An armature for a rotary electric machine includes: a core that includes a plurality of teeth that are arranged at a predetermined pitch in a circumferential direction; and a plurality of edgewise coils that are configured by winding a rectangular conductor wire into an edgewise winding, the plurality of edgewise coils each include rectilinear portions and coil end portions that are arranged radially, and that are each linked by bent portions, the rectilinear portions are arranged radially on circumferential side portions of the teeth so as to be gradually further away from a central axis of the teeth from a tip end of the teeth toward a root, and radially adjacent portions of the rectangular conductor wire are configured such that bulging portions that arise due to compressive stresses resulting from bending at inner peripheral side portions of the bent portions do not face each other.

Armature for rotary electric machine

A rotary electric machine includes a stator in which a plurality of armatures each have a coil formed by a winding wire wound in plural layers around bobbins mounted to a magnetic pole tooth, which are disposed annularly on an inner circumference of a cylindrical frame. The coil is formed by the winding wire being wound with a constant feed pitch in parallel with slots of the bobbins in plural layers. The winding wire forming a first layer of the coil is shifted by half the feed pitch between a left side and a right side of a center axis of the coil as viewed from a plane perpendicular to a stacking direction of a stacked iron core.

Rotary electric machine having shifted winding wire

Provided is a rectangular wire edgewise-bending processing device for performing an edgewise-bending process for a rectangular wire to form a coil, the rectangular wire edgewise-bending processing device including a fixing unit for fixing the rectangular wire, a pressing tool for pressing a surface formed by a long side of a rectangular cross section of the rectangular wire, and a bending tool for bending the rectangular wire into a predetermined coil shape, wherein the edgewise-bending process is performed while the surface formed by the long side of the rectangular cross section of the rectangular wire is pressed.

Rectangular wire edgewise-bending processing device and rectangular wire edgewise-bending processing method

A coil end of a coil is insulated from a stator core by a molded member made of an insulating resin, and the coil, which is positioned in a slot, is insulated by insulating paper. In an armature of a rotating electrical machine, the molded member is divided into a first member and a second member that are rotatably coupled to each other by a hinge.

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Tokyo, Japan

Yutaro Shirai