| 摘要 |
PURPOSE:To reduce the potential difference of the connecting sections of coil ends, and to improve the workability in winding by connecting a coil with a small pitch adjoining to a coil with a large pitch as a lead position in coil connecting sections where the coils cross with specified pitches of a coil group. CONSTITUTION:The number of grooves q per one pole one phase is formed by ten coils of chain winding coils U1-U10 per q=2 and a quater (eight poles-fifty four grooves), and ten coils corresponding to one phase are composed of small coils U2, U7 with a pitch 5, the intermediate coils U3-U5, U8-U10 with the pitch 6 and the large coils U1, U6 with the pitch 9. There are the coil pitches 7, 75 of 100% because of eight poles-fifty four grooves at that time, and only the coils U1, U6 have the pitches exceeding 100%. The coils are connected in such a manner that the fixed number of poles is constituted using the intermediate coils U3-U5, U8-U10 adjoining to the large coils U1, U6 as the lead positions. Accordingly, the potential difference of the connecting sections can be reduced, an excessive insulating reinforcing material can be eliminated and the workability in winding can be improved. |
