| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce cogging torque of a motor.SOLUTION: A stator core 22 includes nine split cores 31u to 33u, 31v to 33v, and 31w to 33w. Coils of a U-phase, a V-phase, and a W-phase are respectively wound around the split cores 31u to 33u, 31v to 33v, and 31w to 33w. The split cores 31u, 33v, and 31w are composed of a first magnetic material. The split cores 32u, 33u, 31v, 32v, 32w, and 33w are composed of a second magnetic material. The magnetic permeability of the first magnetic material is higher than that of the second magnetic material.</p> |
