Mechanical and Thermal Design of Electrically Excited Synchronous Machines for Traction Applications
Alessio Bergano
Mechanical and Thermal Design of Electrically Excited Synchronous Machines for Traction Applications.
Rel. Andrea Tonoli, Renato Galluzzi, Irving Sixto Aguilar Zamorate. Politecnico di Torino, Master of science program in Mechatronic Engineering, 2025
Abstract
In the automotive field, a common solution utilized for electric vehicles consists in the use of permanent magnet synchronous motors (PMSM), however this is not sustainable due to the presence of rare earths in them. The scarcity of these materials combined with their widespread use in various technological sectors have highlighted the criticality of continuing to use this configuration, shifting the interest of automotive manufacturers towards alternative solutions that avoid the use of rare earth materials. One of these, adopted by car manufacturers such as Renault and BMW, consists in replacing the PMSM with a wound rotor one (EESM or WFSM) whose performance is however inferior.
In particular, considering that the wound rotor motor presents structural and thermal limitation for high-speed applications, the objective of the thesis is the attempt to design a WFSM that can operate at speeds higher than 15 krpm while maintaining the performances of PMSM
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