Title :
Design and application of axial-flux permanent magnet wheel motors for an electric vehicle
Author :
Yang, Yee-Pien ; Liang, Jia-Yuan ; Xing, Xian-Yee
Author_Institution :
Dept. of Mech. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
This paper introduces an optimal design of an axial-flux permanent magnet wheel motor for a small electric vehicle. This vehicle is driven directly by two wheel motors installed on its rear wheels, which are compact, low weight, and highly efficient. The optimal current waveform of the same pattern as the back electromagnetic force is used to increase the output torque and efficiency, while the field weakening control is used to extend the speed range of the motor. The electric differential system is proposed for stable maneuverability of the vehicle against system uncertainties and external disturbances.
Keywords :
electric vehicles; machine theory; machine vector control; permanent magnet motors; wheels; axial-flux permanent magnet wheel motors; electric differential system; electric vehicle; electromagnetic force; field oriented control; field weakening control; optimal current waveform; Brushless DC motors; DC motors; Electric vehicles; Fuel cell vehicles; Hybrid electric vehicles; Permanent magnet motors; Rotors; Stators; Torque; Wheels; axial-flux wheel motor; electric differential system; electric vehicle;
Conference_Titel :
AFRICON, 2009. AFRICON '09.
Conference_Location :
Nairobi
Print_ISBN :
978-1-4244-3918-8
Electronic_ISBN :
978-1-4244-3919-5
DOI :
10.1109/AFRCON.2009.5308107
