A novel approach towards electrical loss minimization in vector controlled induction machine drive for EV/HEV

Abstract

The usage of niche copper-rotor induction motor (CRIM) in all the variants of the Tesla Roadster electric vehicle has bolstered the technology of using induction motor for electrified transportation. Understanding the merits, demerits and state of art technology of induction motor and its drive in electric and hybrid electric vehicle (EV/HEV) application, this research manuscript proposes a novel approach towards electrical loss minimization in vector controlled induction machine drives for the aforementioned application. This paper serves as a good theoretical study of the developed loss minimization scheme which would be later incorporated into an overall vector controlled induction machine drive for enhancing the efficiency of the electrified vehicle. Firstly, an insight is provided on the state or art induction motor technology in EV/HEV and the significance of incorporating core loss in an induction machine. Secondly, the conventional two-axis model of an induction motor incorporating core loss has been used to propose a novel loss minimization algorithm. Rotor flux has been used as the control variable for this purpose.