Design and Comparison of Three Surface-Mounted PM Motors for a Light Electric Vehicle

Electric vehicles (EV) are increasingly used in both urban and industrial environments. Electric motors are the essential part of the EV power train systems. Different types of electric motor technologies have been developed for the purpose. Amongst others, permanent magnet synchronous motors (PMSM) are widely used for EV applications because of their unique advantages such as high efficiency and high power density. This paper presents the optimal design of three different surface-mounted PMSMs with fractional-slot tooth-concentrated and distributed winding topologies, respectively. The performance comparison of these motors will outline their respective advantages and disadvantages.