Performance Degradation due to Cut Edge Effect for an Axial-Flux Induction Machine

This paper studies how degraded material properties in near proximity to the cut edge influence the torque performance of an axial-flux induction machine. The magnetically degraded areas are characterized using a layering approach, where the magnetic hysteresis curve describing the material is remodeled so that the field strength required to reach a specific value of magnetic flux density is increasingly higher as the distance from the cut edge decreases. In this work, the layered machine model is evaluated against a non-degraded base model via comparison on magnetic flux density, torque deviation and iron losses.