Static characteristics analysis of a novel flux-switching electromagnetic machine

In this paper, a novel flux-switching electromagnetic (FSEM) machine is proposed, which can not only maintain the advantages of doubly-salient electromagnetic (DSEM) machine,such as simple rotor structure and excitation adjustable,but also realize bipolar flux-linkage change by setting field windings into the slots of stator teeth. The special topology, operation principle, design dimensions were introduced and predicted by a 3-phase 6/5-pole FSEM machine. The finite-element analysis results verify that the proposed machine has bipolar flux and good sinusoidal back-electromotive force (EMF), thus it is suitable for brushless AC (BLAC) operation. Moreover, the torque (power) density of the proposed machine is higher than that of a DSEM machine, under the same electrical conditions,.