Title :
The effect of the distribution of the magnetisation in brushless DC machines on cogging torques
Author :
Benarous, M. ; Eastham, J.F.
Author_Institution :
Force Eng. Ltd., UK
Abstract :
This paper investigates the effect of the excitation magnetisation profile on the cogging torque of an eight pole six slot brushless machine. This type of machine is used for disc file drives. The use of 2D finite element analysis to calculate the cogging torque of a practical machine is first validated and then various magnetisation profiles are modelled. It is shown that the use of sinusoidal profiles is advantageous
Keywords :
brushless DC motors; 2D finite element analysis; brushless DC machines; cogging torques; disc drives; eight pole six slot brushless machine; excitation magnetisation profile; magnetisation distribution effect; sinusoidal profiles;
Conference_Titel :
Electrical Machines and Drives, 1999. Ninth International Conference on (Conf. Publ. No. 468)
Conference_Location :
Canterbury
Print_ISBN :
0-85296-720-9
DOI :
10.1049/cp:19991008
