| 摘要 |
PURPOSE:To enable to form the pole changing three-phase armature winding of high speed ratio using a single winding by a method wherein a magnetic pole is formed by having a DELTA connection whereon real pole is distributed at every other pole on the high-speed side and a Y-connection wherein the current direction of coil is inverted at each groove and at every three-phase wiring circuit group at the low speed side. CONSTITUTION:In the case when the high-speed side pole number P1 is set at 16, the stator groove number Z is set at P1/2+P2=18. The coil pitch 3, in other words, the coil 20 extending from No.1 groove to No.4 groove is arranged in 18-piece double layer lap winding. When a high speed side is formed, U1, V1 and W20 are connected to a three-phase power source and U10 and U2, V0 and V2, W10 and W2, U20 and V1, V20, and W20, W1 and U2 are short-circuited respectively. In the case when the low speed side is formed, U1, V1 and W1 are connected to the three- phase power source and U10 and U20, V10 and V20, W10 and W20, U2 and W2 are short-circuited respectively. |
