| 摘要 |
PROBLEM TO BE SOLVED: To enlarge a q-shaft inductance, to enlarge a reluctance torque, and to improve the efficiency of a motor even in one magnet per pole in a permanent magnet type motor. SOLUTION: In an inner rotor-type permanent magnet-type motor, a rotor core 10 where permanent magnets 11 are radially and intensively stored in a q-shaft by the number of poles is used, an inductance Ld is made small, and q-shaft inductance Lq is made larger than Ld. The forms of the permanent magnets 11 are made thinner on the outer diameter side of the rotor core 10 and thicker on the center side, and into long trapezoids, for example. Flux barriers are provided near the end parts of the permanent magnets 11, and they prevent the short-circuiting and the leakage of magnetic flux and prevent the high efficiency of the motor from deteriorating. |
