Permanent magnet synchronous rotating electric machine and rotor core

A permanent magnet synchronous rotating electric machine comprising:

• a rotor comprising:
• a first hole;
• a second hole provided on an opposite side with respect to a center line extending along a radial direction of the rotor;
• a first magnet provided in the first hole and extending along a first longitudinal axis inclined at a first acute angle with respect to the center line extending along a radial direction of the rotor;
• and
• a second magnet provided in the second hole and extending along a second longitudinal axis inclined at a second acute angle with respect to the center line, the second acute angle being smaller than the first acute angle and being formed opposite to the first acute angle with respect to the center line, an outer circumferential distance between a first radially outer end of the first magnet and a second radially outer end of the second magnet being greater than an inner circumferential distance between a first radially inner end of the first magnet and a second radially inner end of the second magnet;
• and
• a stator including a stator core and a stator winding, the stator core having a plurality of teeth, the stator winding being provided to the teeth, the stator having a displacement point of magnetism to be generated by a current passing through the stator winding of the stator, the second displacement point being provided on an inner peripheral surface facing an outer peripheral surface of the rotor via a gap, a d-axis being defined as a magnetic axis of a magnetic convex portion of the rotor, a q-axis being defined as a salient pole of a magnetic concave portion of the stator, substantially two of the teeth of the stator core being opposed to the salient pole in which magnetic flux along the q-axis flows when the displacement point is provided substantially on the center line of the rotor.

A rotor core comprising:

• an electromagnetic steel plate layered body comprising:
• a first hole;
• and
• a second hole provided on an opposite side with respect to a center line extending along a radial direction of the rotor;
• a first magnet provided in the first hole and extending along a first longitudinal axis inclined at a first acute angle with respect to the center line;
• and
• a second magnet provided in the second hole and extending along a second longitudinal axis inclined at a second acute angle with respect to the center line, the second acute angle being formed opposite to the first acute angle with respect to the center line, an outer circumferential distance between a first radially outer end of the first magnet and a second radially outer end of the second magnet being greater than an inner circumferential distance between a first radially inner end of the first magnet and a second radially inner end of the second magnet, the second acute angle being smaller than the first acute angle so that saturation of flux along q-axis is suppressed and reluctance torque is produced.