Printed Circuit Axial-Flux Permanent Magnet Machines: A Comparative Analysis of Their PCB Topologies and Performance Characteristics

The aim of this paper is to provide a detailed comparison of three stator topologies for wave-type printed circuit board (PCB) winding axial flux permanent magnet machines (AFPMSMs). This comparison is performed based on the generated back electromotive force (EMF), winding inductances, and torque production capabilities of these machines. Three topologies are investigated, overlapping radial wave, non-overlapping radial wave, and overlapping parallel wave PCB windings. 3D finite element analysis (FEA) is used for these investigations.