In the last three decades, due to a more stringent regulation of pollution issue, Electric Vehicles (EV) have gradually gained attention. Permanent magnet (PM) motors and induction motors (IM) have been widely used and investigated as the traction motor of commercial EV, while less research can be found on the wound rotor synchronous machine (WR-SM). This type of motor presents some characteristics that finely fit to the requirements of the electric traction; therefore, it can be a valid alternative to dominant technologies, as its employment by some major car manufacturers proves. The WR-SM comes in two possible configura- tions depending on the rotor construction: salient pole and non-salient pole (also known as "cylindrical").