Effects of cogging torque due to amount of stator slot in permanent magnet generator using finite element analysis

This paper discusses about the effects of cogging torque due to the amount of stator slot present in a typical permanent magnet generator using finite element analysis. All parameters other than stator slot number are kept at a constant to extract the cogging torque waveform on each run of the simulation using the weighted stress tensor method. The design of the generator itself is also kept at a basic design to decrease the amount of variables occurring in this experiment. From the results obtained, cogging torque suffers a significant reduction along with the increase in amount of stator slot in the generator.