Interior permanent magnet motor

An interior permanent magnet motor comprising:

• a stator having a plurality of slots;
• a rotor rotatably disposed inside the stator;
• a plurality of permanent magnets having a same polarity and disposed at intervals in a circumferential direction inside the rotor;
• a rotation shaft disposed at a center of the rotor;
• and
• a plurality of left flux barriers and a plurality of right flux barriers provided on left and right sides of one end of each of the plurality of permanent magnets, adjacent to an outer circumferential surface of the rotor,
• wherein the rotor has a number of magnetic poles including the plurality of permanent magnets, and a number of the plurality of permanent magnets is ½ of the number of magnetic poles of the rotor.

A compressor comprising:

• an interior permanent magnet motor, comprising:
• a stator having a plurality of slots;
• a rotor rotatably disposed inside the stator;
• a plurality of permanent magnets having a same polarity and disposed at intervals in a circumferential direction in the rotor;
• and
• a plurality of flux barriers provided on a side of one end of each of the plurality of permanent magnets adjacent to an outer circumferential surface of the rotor, wherein the rotor has a number of magnetic poles including the plurality of permanent magnets, and a ratio of a number of the plurality of slots of the stator to a number of magnetic poles of the rotor is 3:2 or 3:4, and
• wherein a number of the plurality of permanent magnets provided in the rotor is ½ of the number of magnetic poles of the rotor.