Impact of Soft Magnetic Composite Material for Traction Applications using 3D FEA

This paper focuses on analyzing the impact of Soft Magnetic Composites (SMC) for traction applications. Three different SMC materials are compared for the same machine specification. Eddy current loss density is plotted using a 3D FEA analysis for all three different materials. The magnet and copper losses are plotted along with the total iron losses. Efficiency maps are presented for the three designs for a maximum speed range of 10000 rpm. This paper also presents a comparison of the SMC stator with the laminated stator design which is designed to fit into the same frame. In all the cases the SMC stator is designed with 60% copper fill factor, whereas the laminated stator is designed with 40% copper fill factor. The SMC stator is designed with a 3D flux carrying capability to improve the torque density by eliminating the end winding. The core loss of an SMC material is tested using a toroidal measurement setup.