T. Lindroos (1), J. Pippuri-Mäkeläinen (1), T. Kinos (1), A. Antikainen (1), T. Riipinen (1), S. Metsä-Kortelainen (1), A. Manninen (1), A. Bertinetti (2), J. O. Odden (3)

1- VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 VTT, Finland

2- Gemmate Technologies s.r.l. – CCIAA Torino REA TO-1189884, Italy

3- Elkem Silicon Product Development AS, Norway


Green electrification is vital for the society’s decarbonization. This sets a strong pressure on manufacturers of electric machines to produce items of higher efficiency and, simultaneously, prepare oneself for forecasted supply risks of raw materials. Additive Manufacturing (AM) is seen as enabler to produce components for novel electric machine architectures with designs and performance unattainable with conventional manufacturing. In this study, a permanent magnet (PM) assisted synchronous reluctance motor based on laser powder bed fusion (L-PBF) AM is introduced. Production of soft magnetic powder tailored for L-PBF and optimization of process parameters and further post treatments to achieve good magnetic properties are shown. Characterized magnetic properties are used as input values for motor design where both performance and possibilities of L-PBF are used as design criteria. Permanent Magnet electric motor of the e-scoot is used as reference. The results show that optimized architectures provide high performance with lower PM content.