Koji Yabe

TL;DR: A rotor of a permanent magnet embedded motor includes a rotor iron core formed by stacking a predetermined number of magnetic steel sheets punched into predetermined shapes, a plurality of permanent magnet insertion holes formed along an outer circumferential portion of the rotor core and each including permanent-magnet end-portion cavities on its both ends, and slits formed in the outer-peripheral side side iron core portion outside of each permanent magnets insertion holes, wherein a distance between a first slit present in a radial direction of each of the end portions of the permanent magnets and a second slit, which is

TL;DR: A rotor of a permanent magnet embedded motor as mentioned in this paper includes: a rotor iron core formed by stacking a predetermined number of electromagnetic steel plates perforated in a predetermined shape; a plurality of permanent magnet insertion holes formed along an outer circumferential section of the rotor core; permanent magnet end gaps provided at both ends of the permanent magnet insert hole; and a pluralityof slits formed in an iron core section on the outer side of the insertion hole.

TL;DR: In this paper, a permanent magnet motor is characterized in that cut surfaces 12 face the first slits 13 a and 13 b, and a distance C between tip portions of a pair of the first two slits within the same pole is smaller than the width A between the sides of the magnetic pole tooth 3 in the circumferential direction in the end portion of the permanent magnet tooth 3.

TL;DR: In this article, a double squirrel-cage rotor slot is placed inside of the stator via a gap, and an inner diameter part of the end ring which short circuits both edges of the conductive material filled to the double squirrel cage rotor slot was placed to be adjacent to the air hole part in at least one side of one side.

TL;DR: In this paper, a rotor for permanent magnet embedded motor which does not deteriorate its properties, without necessity of a large-scale positioning device for positioning of a permanent magnet, is presented.