| 摘要 |
PURPOSE:To suppress a cogging in the state that a rotary torque is large by splitting armature coils of respective phases, and annularly disposing the first and second split coils of the respective phases at an equal interval. CONSTITUTION:3-phase armature coils A-C have the first split coils A1-C1 made of ring coils, and the second split coils A2-C2 made of ring coils. The first and second coils A1-C1, A2-C2 are annularly disposed at an equal interval. The intervals of the coils A1-C1, A2-C2 are set to the size of 1/2 of the rotating direction angle of a nonsaturated area in the magnetic flux density characteristic of the poles of a field magnet, and the rotating direction angle of the saturated area of magnetic flux density characteristic is set to a rectifying period. |
