Performance analysis of a hybrid dual rotor motor for electric vehicle application

Electric vehicle (EV) application requires motor used in the drivetrain to be highly efficient, compact in size and of high power density. A unique and novel means to achieve the above motor features is using dual rotor motor (DRM). This paper presents the various possible structures of DRM. The analytical model of hybrid induction motor (IM) - permanent magnet motor (PM) based DRM is presented. Analytical model is framed to determine the steady state performance of DRM. DRM performance is also cross verified using FEM and compared with a conventional IM and PM of the same dimensions. It is observed for a given motor size, hybrid DRM gives increased power output. Hybrid DRM thus has higher power density highly suited for EV application.