Iron Loss Reduction in a Hybrid Stepping Motor by Changing its Pole Arrangement

Abstract

The peculiar structure of a hybrid stepping motor enables us to change its tooth arrangement without having to change its phase or number of rotor teeth. Each arrangement has its own flux distribution and iron loss. In this paper, two types of 3-phase stepping motors with different tooth arrangements are reported. A comparison between the estimated and measured iron losses in the two motors is drawn. The reason for the difference between the estimated and measured values is explained on the basis of the FEM results obtained.