Title :
A life tester for hybrid vehicle e-machine systems
Author :
Chen, Xiaojiang ; Thornton, Roger ; Edington, Murray ; Lewis, Russell
Author_Institution :
Westbrook Centre, Ricardo UK Ltd., Cambridge, UK
Abstract :
A life tester system for evaluating and validating the electric machine system used in hybrid electric vehicles (HEV) is presented. This tester is intended to simulate a dynamometer unit. Two traction machines in the life tester are installed in back-to-back configuration coupled on the same shaft. One machine runs in closed-loop speed control and the other accordingly run in a torque mode. The speed-mode e-machine system will automatically balance its torque output with the other machine torque. In such a configuration, the tester system power consumption can be minimized (one in generation mode, the other in motoring). Two e-machine systems can be simultaneously tested under various load and environment cycle conditions for life endurance test. The control strategy of the life test system is discussed.
Keywords :
angular velocity control; closed loop systems; hybrid electric vehicles; machine control; closed-loop speed control; electric machine system; hybrid electric vehicles; hybrid vehicle e-machine systems; life tester; Automatic control; Electric machines; Energy consumption; Hybrid electric vehicles; Life testing; Power generation; Shafts; System testing; Torque; Velocity control; e-machine; hybrid eletric vehcile; life tester;
Conference_Titel :
Vehicle Power and Propulsion Conference, 2009. VPPC '09. IEEE
Conference_Location :
Dearborn, MI
Print_ISBN :
978-1-4244-2600-3
Electronic_ISBN :
978-1-4244-2601-0
DOI :
10.1109/VPPC.2009.5289737
