Permanent magnet synchronous motor rotor structure

The utility model discloses a permanent magnet synchronous motor rotor structure, which comprises a rotor iron core and permanent magnets, a plurality of mounting grooves are arranged in the rotor iron core along the circumferential direction, the extension direction of the mounting grooves is parallel to the axial direction of the rotor iron core, and the mounting grooves penetrate through the rotor iron core; the rotor iron core is formed by arranging at least two rotor punching sheets along the axial direction of the rotor iron core and rotating and laminating the rotor punching sheets at an angle of 360 degrees/P; a plurality of mounting groove holes are uniformly distributed in the rotor punching sheet, and the plurality of mounting groove holes are rotationally laminated to form a mounting groove; a positioning sheet is arranged in each mounting groove, along the axial direction of the rotor core, the adjacent positioning sheets are spaced by (P-1) rotor punching sheets, P represents the number of poles