Simulation of a toroidal wound flux-switching permanent magnet machine

A small size flux-switching permanent magnet machine is designed by means of finite element analysis having a concentrated toroidal winding in the stator and a large air-gap. The design concept is compared to a C-core flux-switching machine having the same magnet volume. Simulation shows that the electromagnetic performance of the toroidal wound FSPM is lower in the first place because of the different winding configuration. However a better cooling of the stator winding is possible so that at full load operation the temperature rise of the winding can be better limited.