US 11,942,841 B2
Stator of rotary electric machine and rotary electric machine
Masaru Kano, Yokkaichi (JP); and Hidenori Uchida, Mie (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Tokyo (JP); and TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION, Kawasaki (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP); and TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION, Kawasaki (JP)
Filed on Jul. 22, 2021, as Appl. No. 17/382,482.
Application 17/382,482 is a continuation of application No. PCT/JP2020/009487, filed on Mar. 5, 2020.
Prior Publication US 2021/0351649 A1, Nov. 11, 2021
Int. Cl. H02K 3/12 (2006.01); H02K 1/16 (2006.01); H02K 1/276 (2022.01); H02K 3/28 (2006.01)
CPC H02K 3/12 (2013.01) [H02K 1/16 (2013.01); H02K 1/276 (2013.01); H02K 3/28 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A stator of a rotary electric machine, comprising:
a stator core including a yoke and a plurality of teeth; and
a plurality of rectangular conductors having a rectangular cross-section, wherein
the rectangular conductor has a linear part passing through a slot formed between adjacent teeth, and
a width of the slot is formed to be narrower to an inner side from an outer side of a radial direction of the stator core, and
in at least one of the slot, the linear part of a first rectangular conductor of the rectangular conductors, which is positioned innermost in the radial direction and in which a pair of short sides in the cross-section face in the radial direction, and the linear part of a second rectangular conductor of the rectangular conductors, which is positioned outer side of the radial direction than is the linear part of the first rectangular conductor and in which a pair of long sides in the cross-section face in the radial direction, are disposed, and
the first rectangular conductor includes, in a part drawn from the slot, a bending part extending from the linear part to be bent toward a circumferential direction of the stator core, and does not have a twisted part twisted about the circumferential direction in the part drawn from the slot, and
the second rectangular conductor includes, in a part drawn from the slot, the bending part extending from the linear part to be bent toward the circumferential direction, and a twisted part extending from the bending part to be twisted about the circumferential direction, and
the rectangular conductor is formed of a plurality of coil segments having the linear part arranged in the slot and a bridge part connecting the linear part between different slots, which are connected together,
in each coil segment, the linear part includes a first linear part and a second linear part arranged in different slots,
the first linear part and the second linear part of a first coil segment are arranged in the innermost part of the different slots in the radial direction,
the first linear part and the second linear part of a second coil segment are, as being on the both sides of the first linear part and the second linear part of the first coil segment in the circumferential direction, arranged in the innermost part of the slots in the radial direction, which is different from the slots to which the first coil segment is inserted, and
at least one of the first coil segment and the second coil segment is included in the first rectangular conductor.