Design of several permanent magnet synchronous generators for high power traction applications

In this paper, different axial gap permanent magnet generators are designed and compared for one of the Caterpillar truck applications. Various axial gap designs with multiple stators and rotors are carried out and compared with a conventional PM generator in terms of torque density, efficiency, loss, heat dissipation, volume, inertia and weight. The results reveal the advantages of axial gap generators over radial gap generators and that internal rotor double stator disc generator fits the hybrid electric traction application with the given specifications.