Patent ID: 11929649
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A rotating electric machine, comprising:
a rotor; and
a stator provided on an outer side with respect to the rotor in a radial direction of the rotor,
wherein the rotor includes:
a rotor core having a magnet insertion hole group including a plurality of magnet insertion holes; and
a permanent magnet group including a plurality of permanent magnets inserted in the plurality of magnet insertion holes of the magnet insertion hole group, respectively,
wherein the plurality of magnet insertion holes of the magnet insertion hole group are arranged side by side in a shape convex toward a center of the rotor from a radially-outer side surface of the rotor core,
wherein the permanent magnet group forms one magnetic pole,
wherein, in a part of the rotor core between the radially-outer side surface of the rotor core and the magnet insertion hole group, a magnetic slit is formed to extend in a shape convex toward the center of the rotor from the radially-outer side surface of the rotor core, and
wherein the magnet insertion hole group includes three or more magnet insertion holes,
the three or more magnet insertion holes in the magnet insertion hole group include at least first and second outer magnet insertion holes and a central insertion hole arranged between the first and second outer magnet insertion holes,
a first distance represents a shortest distance between the first outer magnet insertion hole and the slit,
a second distance represents a shortest distance between the central insertion hole and the slit, and
the first distance is greater than the second distance.