Analysis and Optimization of Axial Flux Permanent Magnet Machine for Cogging Torque Reduction

In this paper, a hexagonal magnet shape is proposed to have an arc profile capable of reducing torque ripples resulting from cogging in single-sided axial flux permanent (AFPM) machine. The arc-shaped increases the air-gap length effectively and makes more sinusoidal, which decreases density hence causes reduction torque. Cogging basic source vibration, along with noise PM machines, since it main cause ripples. independent load current proportional reluctance variation. Three-dimensional finite element analysis (FEA) used JMAG-Designer analyze performance conventional hexagonal-shaped AFPM machines. designed reduce torque, voltage remains same as compared Further, optimization performed by utilizing asymmetric overhang. Latin hypercube sampling (LHS) create samples, kriging method applied approximate model, genetic algorithm obtain optimum parameters