Title :
Influence of axial asymmetrical rotor in PMAC motor operation
Author :
Bi, Chao ; Hla, Phyu Nu ; Yu, YinQuan ; Soh, Cheng Su ; Jiang, Quan
Author_Institution :
Data Storage Inst., A*Star, Singapore, Singapore
Abstract :
To the permanent magnetic (PM) AC motor with the rotor aligned asymmetrically in axial direction, the motor magnetic field is axial-asymmetric. This asymmetric field generates unbalanced magnetic pull (UMP), and the analysis shows that, the UMP value varies in the motor operation. Analysis shows also that, if the number of stator slot is odd, the UMP center varies in the motor operation. The paper presents an analytical model for analyzing the effects of the UMP induced by the axial-asymmetrical rotor. The numerical results of PMAC motors are also presented, and they confirm the effectiveness of the analytical UMP model presented.
Keywords :
AC motors; magnetic fields; permanent magnet motors; rotors; stators; PMAC motor; UMP; asymmetric field; axial asymmetrical rotor; motor magnetic field; permanent magnetic AC motor; stator; unbalanced magnetic pull; AC motors; Finite element methods; Magnetic separation; Magnetoacoustic effects; Permanent magnet motors; Rotors; Stators;
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.2011.6073966
