Title :
Enhanced electric vehicle efficiency via wheel torque redistribution
Author :
Wong, Alexander ; Khajepour, Amir ; Shih-Ken Chen ; Litkouhi, Bakhtiar
Author_Institution :
Dept. of Mech. & Mechatron. Eng., Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
A novel method is proposed and described, which increases the efficiency of an electric 4WD vehicle by dynamically redistributing torque to shift motor operating points toward more efficient locations. This method operates in parallel with active stability controllers, by considering tire capacity and vehicle dynamics within the energy optimization loop. Simulations are performed for an electric vehicle with four independent AC induction motors, and 5-7% improvements to energy usage are shown in standard EPA drive cycles.
Keywords :
electric vehicles; energy conservation; energy consumption; induction motors; vehicle dynamics; AC induction motors; EPA drive cycles; active stability controllers; electric 4WD vehicle; electric vehicle efficiency; energy optimization loop; vehicle dynamics; wheel torque redistribution; Axles; Energy management; Stability analysis; Tires; Torque; Traction motors; Vehicles;
Conference_Titel :
Intelligent Transportation Systems (ITSC), 2014 IEEE 17th International Conference on
Conference_Location :
Qingdao
DOI :
10.1109/ITSC.2014.6958137
