Patent ID: 8089190

Claim:
A rotor for an interior permanent magnet synchronous motor, the rotor comprising: N-pole and S-pole permanent magnets inserted into a rotor core in the circumferential direction thereof in a multilayered manner and arranged to face each other; and a flux barrier formed in the rotor core between the N-pole and S-pole permanent magnets, wherein the multilayered N-pole and S-pole permanent magnets are arranged around a central axis of the rotor core in the outer circumferential direction thereof at an obtuse angle, wherein the flux barrier comprises first and second flux barriers, which are bent toward the outer circumference of the rotor core from both ends of the innermost and middle permanent magnets among the multilayered N-pole and S-pole permanent magnets, and a third flux barrier which extends from an end of the outermost permanent magnet along the circumferential direction of the rotor core and is adjacent to the second flux barrier.