Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지
DOI QR코드

DOI QR Code

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)
  • Published : 2008.09.30
Download PDF
⟨ Previous Next ⟩

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

References

  1. A. Wallace and A. V. Jouanne, "Comparison testing of an adjustable-speed permanent magnet coupling," EEE Pulp & Paper Industry Technical Conference, 2000
  2. A. Canova and B. Vusini, "Design of axial eddycurrent couplers," IEEE Trans. Ind. Applicat. vol. 39, pp. 725-733, May/June 2003 https://doi.org/10.1109/TIA.2003.811783
  3. 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 https://doi.org/10.1109/20.312569
  4. 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
  5. 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 https://doi.org/10.1109/20.312568
  6. 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 https://doi.org/10.1109/20.123897
  7. 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 https://doi.org/10.1109/20.104738
  8. 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 https://doi.org/10.1109/20.104731
  9. 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 https://doi.org/10.1109/20.334077

Cited by

  1. Analysis and Case Study of Permanent Magnet Arrays for Eddy Current Brake Systems with a New Performance Index vol.18, pp.3, 2013, https://doi.org/10.4283/JMAG.2013.18.3.276
  2. Study of the performance characteristics of a surface permanent magnet motor at various magnetization patterns vol.35, pp.6, 2016, https://doi.org/10.1108/COMPEL-03-2016-0114