Title :
Design of direct-drive axial flux permanent magnet in-wheel machine for electric vehicle
Author :
Feng, Xiao ; Qiu-ling, Deng ; Jian-cheng, Liu
Author_Institution :
Dept. of Electr. & Inf. Eng., Hunan Inst. of Eng., Xiangtan, China
Abstract :
Indirect-drive electric vehicle system will improve the overall reliability and efficiency due to elimination of reduction gear and the differential gear. The paper discusses the design of direct-drive axial flux permanent magnet in-wheel machine for electric vehicle in order to achieve a wide speed range operation and low cogging torque. Fractional-slot winding and wedges made from soft magnetic composition material are adopted for increasing the value of the inductance, so as to improve the AFPM flux-weakening capability. Design results as well as simulation results verify the validation of the proposed method.
Keywords :
electric vehicles; gears; machine windings; permanent magnet machines; reliability; AFPM flux-weakening capability; cogging torque; differential gear elimination; direct-drive axial flux permanent magnet in-wheel machine design; fractional-slot winding; indirect-drive electric vehicle system; reduction gear elimination; reliability; soft magnetic composition material; wedges; Forging; Magnetic flux; Rotors; Soft magnetic materials; Stator windings; Torque;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073602
