| 摘要 |
An electric motor according to the present invention includes a rotor core, a stator core provided so as to face the rotor core in the radial direction, and a permanent magnet buried in the vicinity of an outer circumferential part of the rotor core, wherein the outer circumferential part of the rotor core and an inner circumferential part of the stator core are formed in such a manner that a radial gap length between the outer circumferential part of the rotor core and the inner circumferential part of the stator core for one magnetic pole of the permanent magnet becomes a gap length along a gap length regulated by an expression capable of making magnetic flux density distribution between the outer circumferential part of the rotor core and the inner circumferential part of the stator core a sinusoidal waveform. |
