Design and Diagnostic Algorithm Considering Iron Loss of Propulsion AXFPM for Aircraft

The AXFPM (Axial Flux Permanent Magnet Motor) is considered as a representative motor with high power density. However, since AXFPM has a more complex structure than RFPM (Radial Flux Permanent Magnet Motor), so various considerations are required in design and manufacturing to secure durability and reliability. In particular, the modular core is a design method mainly used in AXFPM, but it has a relatively large iron loss, so it is important to minimizae iron loss with a manufacturing technology suitable for high-efficiency AXFPM. In this paper, we analyzed the causes affecting iron loss of AXFPM from the design and manufacturing point of view and proposed a diagnostic method to discover motors that cause excessive iron loss.