The influence of stator pole shape and its arrangements on cogging torque for double-sided AFPM generator

In this paper, the cogging torques were calculated for 1 kw double-sided axial flux permanent magnet (AFPM) generator with different stator core pole arrangements. The generator is composed of 18 stator pole and 24 rotating field magnets on each side. The cogging torques of the generator with three types of arrangements of stator poles were calculated using 3D finite element method and the optimum core shape was determined to minimize the cogging torque.