Patent ID: 7804216

Claim:
A permanent-magnet reluctance electrical rotary machine comprising: a stator having a winding as an armature; and a rotor including a pair of permanent magnet implanting slots provided in a rotor core at both sides of a magnetic pole configured to produce reluctance torque along a direction of magnetic flux passing through the magnetic pole to produce reluctance torque, and permanent magnets inserted in the permanent magnet implanting slots, respectively, magnetization directions of the permanent magnets residing at both sides of the magnetic pole identical to each other, magnetization directions of the permanent magnets residing at both sides of an interpolar portion opposite to each other, so as to cancel magnetic flux of the armature intersecting that magnetic flux, to control a magnetic field leaking at an end of the magnetic pole, having circumferential magnetic unevenness, wherein the electrical rotary machine is configured to meet a relationship, such that 1.6 ≤ P × W pm R ≤ 1.9 where W pm [mm] is a width of the permanent magnet, R [mm] is a radius of the rotor, and P is a pole number.