Permanent magnet-type rotary electric machine

A permanent magnet-type rotary electric machine comprising:

• a stator including:
• a stator core having a plurality of stator teeth formed in a circumferential direction;
• stator coils arranged on respective bottom sides of a plurality of stator slots formed between the stator teeth and wound on the stator teeth in a concentrated winding manner;
• and
• stator magnets having the same polarity in a radial direction and arranged on respective opening sides of the plurality of stator slots,
• a first rotor having a plurality of pole pieces and disposed coaxially with the stator to face the stator magnets;
• and
• a second rotor having a plurality of permanent magnets and disposed coaxially with the first rotor to face the first rotor,
• wherein at a position facing the first rotor, a circumferential width of the stator teeth are narrower than a circumferential width of the stator slots,
• wherein the stator teeth positioned between the stator magnets arranged in adjacent stator slots among the plurality of the stator slots are tapered in circumferential width toward an inner circumference, and
• wherein the stator teeth and the stator magnets are interspaced from each other, and circumferential interspace width is gradually increased toward an inner circumference.