Control methodology for single stator, dual-rotor induction motor drives for electric vehicles

This paper presents a methodology for controlling the transient as well as steady state torque production from each rotor of a single stator, dual-rotor induction motor drive fed by a single power inverter. This type of drive topology is targeted towards electric vehicle applications where the expected benefits are a more simple drive train design no mechanical differential required, traction control, and lower cost compared to a two inverter, two motor combination. This paper includes the theoretical formulation of a suitable “dual motor” machine model from which the required control relations are derived. Experimental results from a laboratory set up are presented as well to verify the potential of the arrangement