TWI625028B

The invention provides a power generator with a simple structure and may sufficiently looking for inhibition of cogging. The present invention provides a power generator (1) composed of a rotor part (2) and a stator part (3), wherein the rotor part (2) is consisted of multiple protrusions (8U, 9, 8L) arranged on positions, which clamp permanent magnets (7U, 7L), separated with each other at one straight line and by means of constant pitches. The stator part (3) is formed from the stator members arranged according to the way of allowing the protrusions (16U1, 16U2) and protrusions (16L1, 16L2) to mutually stagger between adjacent stator members at half pitch. The stator members are composed of stator magnetic yokes (12U, 12L), permanent magnets (15U, 15L) corresponding to the permanent magnets (7U, 7L) and the protrusions (16U1, 16U2, 16L1, 16L2). The protrusions (16U1, 16U2, 16L1, 16L2) are protruded toward the rotor part (2) by protruding more than the permanent magnets (15U, 15L) and are arranged on positio