| 摘要 |
Magnet insertion holes for embedding a plurality of permanent magnets per pole are formed in a rotor core in a protruding shape toward a center of a rotor. A pair of flux control holes formed in a symmetrical shape with respect to a center line between magnetic poles is provided for each magnetic pole in a magnetic pole gap of the rotor core. Where d is a diameter of the respective flux control holes, m is a center-to-center distance thereof, b is a width of the magnetic pole gap, andτis a pole pitch between magnetic poles, the flux control holes are provided so that a value of m/T obtained by standardizing the center-to-center distance m by the pole pitchτsatisfies 0.08<m/τ<(b−2 d)/τ. |
