KIEE International Transaction on Electrical Machinery and Energy Conversion Systems

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis and Control Parameter Estimation of a Tubular Linear Motor with Halbach and Radial Magnet Array

  • Jang Seok-Myeong (Department of Electrical Engineering, Chungnam National University) ;
  • Choi Jang-Young (Department of Electrical Engineering, Chungnam National University) ;
  • Cho Han-Wook (Department of Electrical Engineering, Chungnam National University) ;
  • Lee Sung-Ho (LG Digital Appliance Lab)
  • Published : 2005.06.01
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Abstract

In the machine tool industry, direct drive linear motor technology is an interesting means to achieve high acceleration, and to increase reliability. This paper analyzes and compares the characteristics of a tubular linear motor with Halbach and radial magnet array, respectively. First, the governing equations are established analytically in terms of the magnetic vector potential and two dimensional cylindrical coordinate systems. Then, we derive magnetic field solutions due to the PMs and the currents. Motor thrust, flux linkage and back emf are also derived. The results are shown to be in good conformity with those obtained from the commonly used finite element method. Finally, control parameters are obtained from analytical solutions.

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References

  1. W. J. Kim, M. T. Berhan, D.L. Trumper and J.H. Lang, 'Analysis and Implementation of a Tubular Motor with Halbach magnet array', IEEE,Trans. Magn.,vol. 1, pp. 471-478, Oct. 1996
  2. Nicola Bianchi, 'Analytical Field Computation of a Tubular Permanent-Magnet Linear Motor', IEEE Trans., Magn., vol. 36, pp. 3798-2801,2000 https://doi.org/10.1109/20.908373
  3. J. Wang, G. W. Jewell, and D. Howe, 'A general framework for the analysis and design .of tubular linear permanent magnet machines', IEEE Trans., Magn., vol. 35, pp. 1986-2000, 1999 https://doi.org/10.1109/20.764898
  4. Murray R. Spiegel, John Liu, 'Mathematical Handbook of Formulas and Tables', Schaum's Outline Series, 2nd Edition, pp.152-153, 1999
  5. David L. Trumper, Won-jong Kim, and Mark E. Williams, 'Design and Analysis Framework for Linear Permanent-Magnet Machines', lEEE,Trans. lAS, vol. 32, pp. 371-379, 1996
  6. Duane C. Hanselman, 'Brushless Permanent-Magnet Motor Design', McGraw-Hill, pp. 70-71, 1994