| 摘要 |
<p>The objective of the present invention is, in a permanent magnet motor using a ferrite magnet, to maximize torque due to the permanent magnet and torque due to the reluctance torque while minimizing the torque ripple ratio. A P-pole-implanted permanent magnet rotator containing a ferrite magnet in a laminated silicon steel sheet, wherein the permanent magnet motor is characterized in disposing, at one pole, a U-shaped permanent magnet comprising three parts, and, at the outer periphery of the U-shaped magnet, one outer-periphery permanent magnet disposed longitudinally in the peripheral direction, to generate permanent magnet torque, and also being provided with: at one pole, the permanent magnet rotator configured to generate reluctance torque using two salient poles formed between the U-shaped permanent magnet and the outer-periphery permanent magnet, and one central salient pole formed between the adjacent poles; and a stator comprising an M-phase stator winding that is a distributed winding, and a stator core having Ns slots, the ratio of Ns/P/M being a common fraction, and when the width of the center salient pole is set to taucp and the slot pitch of the stator core is set to taus, taucp being smaller than taus.</p> |
