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Journal of Applied Physics / Volume 99 / Issue 8 / PROCEEDINGS OF THE 50TH ANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS / Magnetic Motors

J. Appl. Phys. 99, 08R320 (2006); http://dx.doi.org/10.1063/1.2172199 (3 pages)

Effect of skewing the rotor teeth on the performance of doubly salient permanent magnet motors

N. K. Sheth1, A. R. C. Sekharbabu2, and K. R. Rajagopal3

1Electrical Engineering Department, Indian Institute of Technology Delhi, New Delhi 110016, India, and Electrical Engineering Department, Institute of Technology, Nirma University of Science and Technology, Ahmedabad 382481, India
2LG Electronics India Ltd., Greater Noida 201306, India
3Electrical Engineering Department, Indian Institute of Technology Delhi, New Delhi 110016, India

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(Published online 25 April 2006)

This paper presents the effects of skewing the rotor teeth on the performance characteristics such as flux linkage, back emf, phase inductance, and reluctance torque of an 8/6 doubly salient permanent magnet motor using a simple method, which utilizes the results obtained from the two-dimensional finite element analysis. The optimum skewing angle is obtained as 12°–15° for the least ripple torque without much reduction in the back emf. Skewing the rotor teeth of an 8/6 doubly salient permanent magnet motor by 12°–15° will reduce the total harmonic distortion of the back emf profile to 29.69% from the original value of 44.69%. The reduction in the amplitude of the back emf in this case will be 18.79% only.

© 2006 American Institute of Physics

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KEYWORDS and PACS

Keywords

permanent magnet motors, brushless machines, rotors, finite element analysis, harmonic distortion

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2172199

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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