| 摘要 |
<p>A permanent magnet motor comprising a permanent magnet (2) and an armature (3) having a plurality of winding grooves (4) facing the permanent magnet (2) with an air gap therebetween. The armature (3) has a plurality of auxiliary grooves (6) on a magnetic pole surface (5) thereof. A composite vector of vectors of the auxiliary grooves (6) is deviated by 180 DEG or 120 DEG from a vector of the winding grooves (4) in sixth harmonic plane, and wherein a width of a wave form portion of a value more than 90 % of a peak value of a magnetomotive force wave form formed by the permanent magnet (2) is lower than 80 % or 86 % of an entire width of the wave form. Each of vectors of the auxiliary grooves (6) is deviated by 180 DEG or 120 DEG from a vector of the winding groove (4) in sixth harmonic plane, respectively, and wherein a width of a wave form portion of a value more than 90 % of a peak value of a magnetomotive force wave form formed by the permanent magnet (2) is lower than 80 % or 86 % of an entire width of the wave form. <IMAGE></p> |
