Motor rotor of permanent magnet synchronous traction machine

The utility model discloses a motor rotor of a permanent magnet synchronous traction machine, which comprises a rotor body (1) and a plurality of blocks of magnetic steel (2), wherein the plurality of blocks of magnetic steel are arranged in the circumferential direction of the rotor body (1). N-pole magnetic steel and S-pole magnetic steel are separately arranged. The N-pole magnetic steel and the S-pole magnetic steel incline to different directions in the axial direction of the rotor body (1). The inclination angle between the N-pole magnetic steel and the axial direction of the rotor body (1) is same with that between the S-pole magnetic steel and the axial direction of the rotor body (1). The motor rotor of the permanent magnet synchronous traction machine can effectively restrain harmonic wave of the traction machine and furthermore does not reduce the reverse electromotive force of the traction machine. The operation efficiency of the traction machine can be improved.