Additively Manufactured Transverse Flux Machine Components with Integrated Slits for Loss Reduction

Abstract

Laser powder bed fusion (L-PBF) was used to produce stator half-shells of a transverse flux machine from pure iron (99.9% Fe). In order to reduce iron losses in the bulk components, radially extending slits with a nominal width of 150 and 300 µm, respectively, were integrated during manufacturing. The components were subjected to a suitable heat treatment. In addition to a microscopic examination of the slit quality, the iron losses were also measured using both a commercial and a self-developed measurement setup. The investigations showed the iron losses can be reduced by up to 49% due to the integrated slits and the heat treatment.

Keywords

• additive manufacturing
• selective laser melting (SLM)
• laser powder bed fusion (L-PBF)
• transverse flux machine components
• soft magnets
• loss reduction