| 摘要 |
<p>A motor comprises a stator including an annular stator yoke and a stator core with inner and outer teeth projecting from the stator yoke to the inner and outer sides, and a plurality of coils wound around the stator core; and an inner rotor and an outer rotor facing the inner and outer teeth with spaces formed therebetween and having permanent magnets. The number (s) of the inner and outer slots and the number (P) of the poles of the inner and outer magnets have a relation of S:P = 3:2N-1, except the case that (N) is an integer of one or more and (2N-1) is multiples of three.</p> |
