Rotor assembly and self-starting permanent magnet synchronous reluctance motor

A rotor assembly, comprising a rotor core, wherein on a cross section of the rotor core, the rotor core is provided with slit slots, q-axis squirrel cage slots and permanent magnets, the q-axis squirrel cage slots are disposed at both ends of the slit slots, the permanent magnets are disposed in the slit slots, the permanent magnet located at the innermost layer in a d-axis direction is at least asymmetrically disposed relative to a d-axis, and an offset direction of the permanent magnet located at the innermost layer relative to the d axis is consistent with a rotation direction of the rotor assembly:

• wherein at least two layers of permanent magnets are disposed in a radial direction, in the two adjacent layers of the permanent magnets, the part of the permanent magnet located at an inner layer at a rear side of the d axis has a central angle a1 relative to a center of the rotor core, and the part of the permanent magnet located at the outer layer at the rear side of the d axis has a central angle a2 relative to the center of the rotor core, wherein a1≤a2;
• and
• a front side of the d axis refers to a side of the d axis same as the rotation direction of the rotor assembly, and the rear side of the d axis refers to a side of the d axis opposite to the rotation direction of the rotor assembly.