Motor rotor, self-starting synchronous reluctance motor comprising same, and compressor

A motor rotor, comprising a rotor core, wherein the rotor core comprises:

• a first rotor lamination, wherein filling slots, rotor slots, and a shaft hole are formed in the first rotor lamination;
• the filling slots comprise first filling slots and second filling slots;
• two outer filling layers are respectively arranged on the first rotor lamination and proximate to a rotor outer circle along a q-axis, and each of the two outer filling layers comprises one first filling slot;
• multiple magnetic barrier layers are arranged between the two outer filling layers along the q-axis at intervals, and each of the multiple magnetic barrier layers comprises one rotor slot, and two second filling slots arranged at two ends of the rotor slot, respectively;
• in the same magnetic barrier layer, separating ribs are arranged between the rotor slot and each of the two second filling slots;
• an end ring;
• and
• a second rotor lamination arranged between the end ring and the first rotor lamination, wherein through slots are formed in the second rotor lamination at positions corresponding to the filling slots of the first rotor lamination respectively, and a total cross-sectional area of first portions of the rotor slots on the first rotor lamination between an edge of an inner hole and an outer circle of the second rotor lamination is less than a total cross-sectional area of the rotor slots on the first rotor lamination;
• wherein the maximum q-axial thickness of each of the first filling slots is k, and the maximum q-axial thickness of the second filling slot in an adjacent magnetic barrier layer of the first filling slot is k1, and the minimum q-axial thickness of a magnetic channel connected to the each of the first filling slot is k2, and it is satisfied that 1<k/k1≤2, and 0.8<k/k2≤1.6.