Inferior permanent magnet motor
摘要
說明書
Further, the pole arc angle θm of the permanent magnet 30, the flux barriers 25, 26, 27, and 28, and the slots 15 of the stator 10 may be formed to satisfy the following formulas. θs/2≤θib<θm<θob θs/2≤θib<θn θn≤θm<θob θm<θob<θm+θs θn=360/P θs=360/S
Here, θib is an inner flux barrier angle of the permanent magnet 30, θob is an outer flux barrier angle of the permanent magnet 30, P is the number of magnetic poles of the rotor 20, and S is the number of slots 15 of the stator 10.
The inner flux barrier angle θib of the permanent magnet 30 is an angle between two straight lines connecting the closest ends of the two flux barriers 26 and 27 provided at both ends of the permanent magnet 30 to the center C of the rotor 20. In other words, in
