Permanent magnet motor

A permanent magnet motor comprising:

• a rotor including a rotor iron core and a plurality of permanent magnets provided in the rotor iron core;
• and
• a stator including a stator iron core and two sets of three-phase armature windings provided in a plurality of slots formed in the stator iron core, wherein
• one set of the armature windings is supplied with current from a first inverter, and the other set of the armature windings is supplied with current from a second inverter,
• in the case where a pole number of the rotor is M and a slot number of the stator iron core is Q, M and Q satisfy a relationship of M<Q and a greatest common divisor of M and Q is equal to or greater than 3,
• in the rotor, the rotor iron core is located on the stator side beyond a radius intermediate between the maximum outer radius and the minimum inner radius of the permanent magnets, and
• a phase difference between three-phase currents supplied from the first inverter and three-phase currents supplied from the second inverter is controlled to fall within a range of electrical angles of 20 to 40 degrees.