Provided is a permanent magnet motor that is not only capable of simultaneously achieving cogging torque reduction and torque ripple reduction but also simultaneously achieving size/weight reduction and torque ripple reduction. When two sets of three phase armature windings are configured such that the first armature winding (30 1) comprises U1 phase V1 phase and W1 phase and the second armature winding (30 2) comprises U2 phase V2 phase and W2 phase and when two sets of three phase armature windings are configured such that the first armature winding comprises U1 phase V1 phase and W1 phase and the second armature winding comprises U2 phase V2 phase and W2 phase the three phase armature windings are arranged such that either the U1 phase is housed inside both of any immediately adjoining slots among multiple slots (27) or at least the U1 phase or the U2 phase is housed inside one of any immediately adjoining slots (27). The U1 phase V1 phase and W1 phase and the U2 phase V2 phase and W2 phase are driven so as to be shifted from each other at an electrical angle of 20 40°. The slot aperture width (Ws) of a stator core (22) is set to Ws/(2pRs/Ns) = 0.15 wherein Rs: inner radius of stator core Ns: the number of slots of stator core.
