EDDY CURRENT LOSSES IN A WOUND ROTOR SYNCHRONOUS MACHINE: ANALYTICAL AND FINITE ELEMENT ANALYSIS

the world of electric vehicles is now dominated by the permanent magnet synchronous motor. More and more car manufacturers, are wondering if, with the same performance, there is the possibility of using a more ecologically sustainable rotor model. In fact, permanent magnets use what are called "rare earths", i.e. magnetic powders that come from poor countries where people perform underpaid and unsafe jobs. A solution to this type of rotor is definitely the wound rotor In the development of a prototype of this motor type, together with some students from the University of Padua, my work focused on the analysis of the synchronous motor with a wound rotor, in which initially the B-H magnetization curve is obtained analytically and then verified through finite element analysis, subsequently with the same analysis procedure, eddy current losses due to several sources were studied: stator caves, higher harmonic frequencies, the switching frequency of the inverter