0
Technical Brief

Optimization of Eight Pole Radial Active Magnetic Bearing

[+] Author and Article Information
K. P. Lijesh

Mechanical Department,
Indian Institute Technology Delhi,
New Delhi 110016, India
e-mail: lijesh_mech@yahoo.co.in

Harish Hirani

Associate Professor
Mechanical Department,
Indian Institute Technology Delhi,
New Delhi 110016, India
e-mail: hirani@mech.iitd.ac.in

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received August 24, 2014; final manuscript received November 9, 2014; published online December 18, 2014. Assoc. Editor: Bugra Ertas.

J. Tribol 137(2), 024502 (Apr 01, 2015) (7 pages) Paper No: TRIB-14-1211; doi: 10.1115/1.4029073 History: Received August 24, 2014; Revised November 09, 2014; Online December 18, 2014

In the current paper, studies carried out to design an eight pole electromagnetic bearing have been presented. The magnetic levitation force, accounting the copper and iron losses, was maximized for the given geometric constraints. Derivation of winding constraint equation in terms of wire diameter, number of turns, and dimensions of pole has been presented. Experiments were conducted to establish the constraints related to temperature rise. Finally, the dimensions of the electromagnet for maximizing the force obtained using numerical optimization have presented.

FIGURES IN THIS ARTICLE
<>
Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 2

Winding constraint

Grahic Jump Location
Fig. 3

Winding space and air gap

Grahic Jump Location
Fig. 1

(a) Active magnetic bearing and (b) two orthographic views of the top electromagnet

Grahic Jump Location
Fig. 4

Experimental setup with electromagnet core

Grahic Jump Location
Fig. 5

Location of thermocouple: (a) experimental measurement and (b) schematic figure

Grahic Jump Location
Fig. 6

Change in temperature of winding with respect to time

Grahic Jump Location
Fig. 7

Measurement of magnetic flux density using Gauss meter

Grahic Jump Location
Fig. 8

Reduction in magnetic flux density with rise in temperature

Grahic Jump Location
Fig. 9

Dimensions of electromagnet

Grahic Jump Location
Fig. 10

Objective function with respect to the number of iteration

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In