Patent ID: 7034424

Claim:
A permanent magnet rotating machine comprising: a permanent magnet having a plurality of magnetic poles; a rotor including the permanent magnet disposed circumferentially on the rotor, the permanent magnet having a skew at boundaries between magnetic poles of the permanent magnet; a stator iron core having a substantially cylindrical shape and including a plurality of convex poles protruding inwardly; and a stator including the stator iron core, the rotor being disposed inside the stator, wherein a skew angle of the skew is smaller than a theoretical angle θ s (electrical angle) and larger than one-half the theoretical angle θ s , and the theoretical angle θ s in degrees is defined as, θ s =180×(number of magnetic poles in the rotor)/(smallest integer of which both number of magnetic poles of the rotor and number of magnetic poles of the stator are factors).