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

fYear

2009

fDate

23-25 Sept. 2009

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

Conference_Titel

AFRICON, 2009. AFRICON '09.

Conference_Location

Nairobi

Print_ISBN

978-1-4244-3918-8

Electronic_ISBN

978-1-4244-3919-5

Type

conf

DOI

10.1109/AFRCON.2009.5308107

Filename

5308107