Next Article in Journal
Research and Solutions to Minimize Frontal Area Overheating of Hydro Generator Stator with Vertical Axis
Next Article in Special Issue
A Review on Additive Manufacturing Possibilities for Electrical Machines
Previous Article in Journal
A Virtual Power Plant Solution for Aggregating Photovoltaic Systems and Other Distributed Energy Resources for Northern European Primary Frequency Reserves
Previous Article in Special Issue
Time-Frequency Analysis Based on Minimum-Norm Spectral Estimation to Detect Induction Motor Faults
Article

AC Magnetic Loss Reduction of SLM Processed Fe-Si for Additive Manufacturing of Electrical Machines

1
Institute of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 19086 Tallinn, Estonia
2
Department of Electrical Engineering and Automation, Aalto University, 02150 Espoo, Finland
3
Department of Mechanical and Industrial Engineering, Tallinn University of Technology, 19086 Tallinn, Estonia
*
Author to whom correspondence should be addressed.
Academic Editors: Carlos Platero and Andrea Mariscotti
Energies 2021, 14(5), 1241; https://doi.org/10.3390/en14051241
Received: 27 December 2020 / Revised: 19 February 2021 / Accepted: 20 February 2021 / Published: 24 February 2021
(This article belongs to the Special Issue Future Electrical Machines)
Additively manufactured soft magnetic Fe-3.7%w.t.Si toroidal samples with solid and novel partitioned cross-sectional geometries are characterized through magnetic measurements. This study focuses on the effect of air gaps and annealing temperature on AC core losses at the 50 Hz frequency. In addition, DC electromagnetic material properties are presented, showing comparable results to conventional and other 3D-printed, high-grade, soft magnetic materials. The magnetization of 1.5 T was achieved at 1800 A/m, exhibiting a maximum relative permeability of 28,900 and hysteresis losses of 0.61 (1 T) and 1.7 (1.5 T) W/kg. A clear trend of total core loss reduction at 50 Hz was observed in relation to the segregation of the specimen cross-sectional topology. The lowest 50 Hz total core losses were measured for the toroidal specimen with four internal air gaps annealed at 1200 °C, exhibiting a total core loss of 1.2 (1 T) and 5.5 (1.5 T) W/kg. This is equal to an 860% total core loss reduction at 1 T and a 510% loss reduction at 1.5 T magnetization compared to solid bulk-printed material. Based on the findings, the advantages and disadvantages of printed air-gapped material internal structures are discussed in detail. View Full-Text
Keywords: electric machines; additive manufacturing; soft magnetic materials; selective laser melting; iron losses; magnetic properties electric machines; additive manufacturing; soft magnetic materials; selective laser melting; iron losses; magnetic properties
Show Figures

Figure 1

MDPI and ACS Style

Tiismus, H.; Kallaste, A.; Belahcen, A.; Tarraste, M.; Vaimann, T.; Rassõlkin, A.; Asad, B.; Shams Ghahfarokhi, P. AC Magnetic Loss Reduction of SLM Processed Fe-Si for Additive Manufacturing of Electrical Machines. Energies 2021, 14, 1241. https://doi.org/10.3390/en14051241

AMA Style

Tiismus H, Kallaste A, Belahcen A, Tarraste M, Vaimann T, Rassõlkin A, Asad B, Shams Ghahfarokhi P. AC Magnetic Loss Reduction of SLM Processed Fe-Si for Additive Manufacturing of Electrical Machines. Energies. 2021; 14(5):1241. https://doi.org/10.3390/en14051241

Chicago/Turabian Style

Tiismus, Hans; Kallaste, Ants; Belahcen, Anouar; Tarraste, Marek; Vaimann, Toomas; Rassõlkin, Anton; Asad, Bilal; Shams Ghahfarokhi, Payam. 2021. "AC Magnetic Loss Reduction of SLM Processed Fe-Si for Additive Manufacturing of Electrical Machines" Energies 14, no. 5: 1241. https://doi.org/10.3390/en14051241

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop