Abstract
Two modular dual 3-phase PM machines with 42-slots/32-poles (42S/32P) and 192S/32P combinations are compared to show the influence of winding configurations on modular machine performance. The proposed 42S/32P modular machine with redundant teeth for easy modularity adopts non-overlapping (NOLP) winding, while the conventional 192S/32P one uses overlapping (OLP) type. Based on the comparative study with two sets of winding operation, it can be found that two modular machines show similar torque performance with rated currents fed into windings. However, the slightly larger average torque is expected for the proposed modular machine with higher current. Moreover, the torque ripple of the proposed modular machine will not significantly vary with the current. The experiments validate the correctness of the analyses in this paper.
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