Interior permanent magnet motor for superchargers

An interior permanent magnet motor for superchargers comprising:

• a rotation shaft;
• a stator, and
• a rotor comprising:
• a rotor main body which is fixed to the rotation shaft;
• a magnet which is attached to the rotor main body in a slot of the rotor main body;
• and
• a resin filled between the magnet and the rotor main body,
• wherein the magnet comprises:
• a magnet main surface which intersects a radial axis which intersects a rotation axis of the rotation shaft;
• a magnet back surface which intersects the radial axis;
• and
• a magnet side surface which connects the magnet main surface to the magnet back surface,
• wherein the slot comprises:
• a main body main surface which faces the magnet main surface;
• a main body back surface which faces the magnet back surface;
• and
• a main body side surface which faces the magnet side surface;
• and
• wherein the main body side surface comprises:
• a first main body side surface portion of which a distance from the magnet side surface is substantially constant;
• and
• a second main body side surface portion of which a distance from the magnet side surface varies.

An interior permanent magnet motor for superchargers comprising:

• a rotation shaft;
• a stator, and
• a rotor comprising:
• a rotor main body which is fixed to the rotation shaft;
• a magnet which is attached to the rotor main body in a slot of the rotor main body;
• and
• a resin filled between the magnet and the rotor main body,
• wherein the magnet comprises:
• a magnet main surface which intersects a radial axis which intersects a rotation axis of the rotation shaft;
• a magnet back surface which intersects the radial axis;
• and
• a magnet side surface which connects the magnet main surface to the magnet back surface,
• wherein the slot comprises:
• a main body main surface which faces the magnet main surface;
• a main body back surface which faces the magnet back surface;
• a main body side surface which faces the magnet side surface;
• and
• a corner portion between the main body side surface and the main body back surface, wherein a distance from the magnet to a surface of the slot at the corner portion varies.