Electrical vehicles - practical solutions for power traction drive systems

This paper presents various solutions for the power traction motors of electrical vehicles. Equivalent designs to those commercially available on the roads are investigated. Potential simple modifications of the winding configurations and cooling system are studied: (a) flat wire (hairpin) winding vs stranded round wire, (b) material grades effect - copper vs aluminum, (c) cooling systems - water jacket vs spray, fluid properties and flow rate