STATOR OF ROTARY ELECTRIC MACHINE

• Main Authors: KAMEDA YOHEI, YAMAMOTO SHIGE, YODA HISASHI
• Format: Patent
• Language: English; Japanese
• Published: 29.09.2023
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

To prevent adjacent stator coils from interfering with each other in a radial direction or a circumferential direction of the stator core.SOLUTION: A stator includes: a stator core 12 having a plurality of slots 18 and a plurality of teeth 16; and a stator coil 20 that is constituted by using a rectangular wire having a rectangular cross section and in which each slot insertion unit 22 inserted into different slots 18 separated in a circumferential direction of the stator core 12 is connected in the circumferential direction by a coil end unit 24 located outside the slot 18. The coil end portion 24 includes: two curved portions 24A that extend along the circumferential direction of the stator core 12 when viewed in a shaft direction of the stator core 12; and a crank portion 24B that is provided between the two curved portions 24A, connects both of them, and is bent in a crank shape so as to shift the two curved portions 24A in a radial direction of the stator core 12. Each curved portion 24A is bent at a bent portion B located on a center line L1 of the teeth 16 passing through a center of the stator core 12 as viewed in the shaft direction.SELECTED DRAWING: Figure 5 【課題】隣接する固定子コイル同士が固定子コアの径方向または周方向に干渉し合うことを抑制する。【解決手段】本固定子は、複数のスロット１８及び複数のティース１６を有する固定子コア１２と、断面矩形状の平角線を用いて構成され、固定子コア１２の周方向に離れた異なるスロット１８に挿入されたスロット挿入部２２同士がスロット１８外に位置するコイルエンド部２４によって周方向に接続された固定子コイル２０と、を備えている。コイルエンド部２４は、固定子コア１２の軸方向視で固定子コア１２の周方向に沿って延在する２つの湾曲部２４Ａと、２つの湾曲部２４Ａの間に設けられて両者を接続し且つ２つの湾曲部２４Ａを固定子コア１２の径方向にずらすようにクランク状に曲がったクランク部２４Ｂと、を有している。各湾曲部２４Ａは、上記軸方向視で固定子コア１２の中心を通るティース１６の中心線Ｌ１上に位置する曲げ部Ｂにおいて曲がっている。【選択図】図５