부산대학교 도서관

This paper presents the design analysis and comprehensive performance comparison between two different topologies of permanent magnet synchronous machines: transverse flux machines and axial flux machines. Two different topologies of the transverse flux machine and one topology of the axial flux machine are optimized while keeping the outer diameter, stack length, magnet weight, and current density equal for all of them. Double stator and single rotor configuration are used for both TFM and AFM, which help better magnet utilization and enhance torque density. For a fair comparison, stator slot and rotor pole number are kept identical for both the topologies. 3D finite element analysis is used to optimize and analyze all the machines. Analytical sizing equations are used as a first step to design the machines. After that, critical parameters are globally optimized to acquire the maximum torque output while maintaining the constraints. Performance comparison among the machines is shown in average torque, gravimetric and volumetric torque density, power factor and efficiency.