Interior magnet rotary electric machine

An interior magnet rotary electric machine comprising:

• a rotor that includes a rotor core including two sets of permanent magnets embedded therein;
• and
• a stator that is disposed facing the rotor,
• wherein the two sets of permanent magnets are each constituted by a pair of magnets with the same polarity, which are disposed adjacently along a circumferential direction of the rotor,
• magnet embedding holes accommodating the magnets of two pairs each providing the same polarity are formed in the rotor core in a one-to-one relation to the magnets of two pairs each providing the same polarity, and
• assuming that a portion of the rotor core between the adjacent magnet embedding holes, which accommodate the magnets belonging to the same set and providing the same polarity, is called a same-polarity magnet spacing portion, and that a portion of the rotor core between the adjacent magnet embedding holes, which accommodate the magnets belonging to the different sets and providing the same polarity, is called an opposite-polarity magnet spacing portion, a thickness of the same-polarity magnet spacing portion is smaller than a thickness of the opposite-polarity magnet spacing portion in the circumferential direction of the rotor.