In order to realize a permanent magnet dynamo electric machine which
permits a high speed rotation, the permanent magnet dynamo electrIc
machine including a stator 20 having a stator iron core 22 in which a
stator winding 24 is wound, and a rotor 30 facing the inner circumference
of the stator 20 and rotatably supported thereby, the rotor 30 having a
rotor iron core 32 and a plurality of permanent magnets 36 arranged inside
the rotor iron core 32 so as to face the stator iron core 22, wherein the
rotor iron core 32 is provided with the same number of permanent magnet
insertion holes 34 as the plurality of permanent magnets 36 for receiving
the same at positions where ratio R1/R0 is equal to or more than 0.85,
wherein R0 is the radius of the rotor 30 and R1 is the radius of an
imaginary circle drawn by inscribing the faces of the plurality of
permanent magnets 36 at the side remote from the stator 20.