The present power generator includes: a rotor including a plurality of permanent magnets arranged in a rotation direction; a stator including a plurality of coils provided to face the plurality of permanent magnets, each of the plurality of coils being configured to generate AC voltage during rotation of the rotor; and a plurality of magnetic bodies respectively provided in the plurality of coils, in a direction of center axis of each of the coils, a length (Lm) of each of the magnetic bodies being set to be shorter than a length (Lc) of each of the coils. Accordingly, a larger amount of power than that in a coreless structure is generated.