| 摘要 |
PURPOSE:To obtain a large rotary torque with smooth torque ripple by winding toroidal coils at the positions separated by even number magnification of field pole width on an annular yoke to form a set of armature coils, and providing a plurality of sets of coils not superposed with the armature coil. CONSTITUTION:An annular stator yoke 43 is provided oppositely to even pole number of field magnets 47 alternately having N- and S-poles. Leads are wound in many turns in a toroidal shape to form the first conductor unit 49a-1, conductors are wound in many turns in a toroidal shape at the position separated by even number magnification of the field pole with from there to form the second conductor 49-1, currents flow both conductors in the same direction to form a set of armature coil 49. Further, a plurality of set of such conductor combinations are formed so as not to superpose with the armature coil on the same yoke 43 to form an armature 48. |
