Title :
Cogging torque prediction by superposition of torque due to pole transition over slot
Author :
Liu, Z.J. ; Li, J.T. ; Jabbar, M.A.
Author_Institution :
Data Storage Inst., Singapore
Abstract :
In this paper, an effective method for predicting cogging torque developed in high precision permanent magnet motors used in data storage devices is presented. The torque component due to transition of magnet polarity over slot opening is studied in details, numerically and analytically, to gain in depth understanding of the torque development mechanism. The resultant cogging torque has good agreement with numerical simulation by finite element methods
Keywords :
finite element analysis; permanent magnet motors; torque; cogging torque prediction; data storage devices; finite element methods; magnet polarity; numerical simulation; permanent magnet motors; pole transition; torque superposition; Brushless DC motors; DC motors; Data engineering; Finite element methods; Forging; Magnetic analysis; Memory; Numerical simulation; Permanent magnet motors; Torque;
Conference_Titel :
Electric Machines and Drives, 2005 IEEE International Conference on
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-8987-5
Electronic_ISBN :
0-7803-8988-3
DOI :
10.1109/IEMDC.2005.195877
