| 摘要 |
PROBLEM TO BE SOLVED: To enlarge a q-shaft inductance, to enlarge a reluctance torque even in one magnet per pole in a permanent magnet type motor and to improve the efficiency of the motor. SOLUTION: In the inner rotor-type permanent magnet-type motor, a rotor core 10 is composed of a first core 12 where as many permanent magnets 11 as the number of poles in a permanent magnet type motor are embedded, and a second core 14 where holes 13 are formed in places corresponding to the permanent magnets 11. The first core 12 and the second core 14 are adjusted to a d-shaft and a q-shaft and they are overlapped. In the first core 12, the permanent magnets 11 are embedded along a circumferential direction and 2P (P: a positive integer)-pieces of permanent magnets form a magnetic pole of 2P poles. The holes 13 of the second core 14 are formed in such a way that they are contained in the holes of the permanent magnets 11. |
