| 摘要 |
PURPOSE:To obtain an armature winding with a high ratio of pole numbers and a good utilization rate of winding, by providing armature windings of single windings in the fixed number of grooves, and inverting the current of the fixed coil side forming the pole on a high speed side resulting in the formation of the pole on a low speed side. CONSTITUTION:When the pole number on a high speed side P1 is e.e. four, and the pole number on a low speed side P2 is e.g. 16, the number of grooves Z is P1+2P2, i.e. 36, the groups of three-phase windingsI, II equipped with three pairs wherein two coils are in series for each phase are provided, and a fixed coil is connected to each terminal. When forming four poles, power sources are connected to terminals U1, V1, W1 resulting in connection by short circuitting the fixed terminal. On the other hand, when forming 16 poles, power sources are connected to terminals U10, V10, W10 resulting in Y connection by shortcircuitting the fixed terminal. Thus, the current direction for the coil side of each groove is inverted with two pieces alternately at an interval of two windings for every group of three-phase windingsI, II. |
