Abstract: A dynamo-electric machine comprises a stator having a plurality of salient poles wound with a coil, and a rotor fixed with a plurality of permanent magnets and disposed to rotate freely on an outer circumference of the stator. Salient poles becoming in-phase are arranged adjacently in a circumferential direction and these adjacent salient poles are disposed oppositely to the permanent magnets of different polarity at the same electric angle. These salient poles have coils wound in reverse directions. An angle between adjacently salient poles is set at 360°/N for in-phase, and an angle ?2 between adjacently salient poles is set at ?1+?1/number of phases P for out-of-phase, where N is the number of poles of the permanent magnets, and the number of phases P×(?1+?2) is set at 180° or less.

Abstract: A dynamo-electric machine 1 comprising a stator 3 having a plurality of salient poles 14 wound with a coil 5, and a rotor 2 fixed with a plurality of permanent magnets 4 and disposed to rotate freely on the outer circumference of the stator 3. Salient poles U1 and U2 becoming in-phase are arranged adjacently in the circumferential direction and adjacent salient poles U1 and U2 of in-phase are disposed oppositely to the permanent magnets of different polarity at the same electric angle. Salient poles U1 and U2 of in-phase have coils wound in the reverse directions. The angle ?1 between adjacently salient poles is set at 360°/N for in-phase, and the angle ?2 between adjacently salient poles is set at ?1+?1/number of phases P for out-of-phase, where N is the number of poles of the permanent magnets, and the number of phases P×(?1+?2) is set at 180° or less.