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http://dx.doi.org/10.5370/JEET.2008.3.3.379

The Influence of Magnetization Pattern on the Performance of Permanent Magnet Eddy Current Couplings and Brakes  

Cha, Hyun-Rok (Automotives Components Service Center, Korea Institute of Industrial Technology)
Cho, Han-Wook (Korea Institute of Machinery and Materials)
Lee, Sung-Ho (Automotives Components Service Center, Korea Institute of Industrial Technology)
Publication Information
Journal of Electrical Engineering and Technology / v.3, no.3, 2008 , pp. 379-384 More about this Journal
Abstract
This paper examines permanent magnet eddy current couplings and brakes. Specifically, the effect of permanent magnet magnetization patterns on the magnetic field and force production is investigated. The eddy current couplings and brakes employ high energy-product neodymium-iron-boron (NdFeB) permanent magnets that act on iron-backed copper drums to provide torque transfer from motor to load without mechanical contact. A 2-dimensional finite element modeling is performed to predict the electromagnetic behavior and the torque-speed characteristics of permanent magnet type eddy current couplings and brakes under constant speed operation.
Keywords
Eddy current brake; Eddy current coupling; Halbach magnetization;
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1 Z. Wang, G.E. Dawson, T.R. Eastham, and Z. Liu, "The finite element solutions for moving conductor eddy current problems based on triangular elements," IEEE Trans. Magn., vol. 30, pp. 4329-4331   DOI   ScienceOn
2 Y. Marechal and G. Meunier, "Computation of 2D and 3D eddy currents of moving conductors of electromagnetic retaders," IEEE Trans. Magn., vol.26, pp. 2382-2384, 1990   DOI   ScienceOn
3 K. Muramatsu, T. Nakata, N. Takahashi, and K. Fujiwara, "Comparison of coordinate systems for eddy current analysis in moving conductors," IEEE Trans. Magn., vol. 28, pp. 1186-1189, 1992   DOI   ScienceOn
4 W. L. Lorimer and D. K. Lieu, "Correlation of experimental data and three-dimensional finite element modeling of a spinning magnet array," IEEE Trans. Magn., vol. 30, pp. 3004-3007, Sept. 1994   DOI   ScienceOn
5 B. Lequesne, B. Liu, and T. W. Nehl, "Eddy-current machines with permanent magnet and solid rotors," IEEE Trans. Ind. Applicat. vol. 35, pp. 1289-1294, Sept./Oct. 1997
6 A. Wallace and A. V. Jouanne, "Comparison testing of an adjustable-speed permanent magnet coupling," EEE Pulp & Paper Industry Technical Conference, 2000
7 A. Canova and B. Vusini, "Design of axial eddycurrent couplers," IEEE Trans. Ind. Applicat. vol. 39, pp. 725-733, May/June 2003   DOI   ScienceOn
8 T. W. Nehl and B. Lequesne, "Nonlinear twodimensional finite element modeling of permanent magnet eddy current couplings and brakes," IEEE Trans. Magn., vol. 30, pp. 3000-3003, Sept. 1994   DOI   ScienceOn
9 D. Rodger, P. J. Leonard, and T. Karagulor, "An optimal formulation for 3D moving conductor eddy current problems with smooth rotors," IEEE Trans. Magn., vol. 26, pp. 2359-2363, 1990   DOI   ScienceOn