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Analysis of the Torque Characteristics of a Multi-Degrees of Freedom Surface Permanent-Magnet Motor

  • Kang, Dong-Woo (Department of Electric Engineering, Hanyang University) ;
  • Go, Sung-Chul (Department of Electric Engineering, Hanyang University) ;
  • Won, Sung-Hong (Dongyang Technical College) ;
  • Lim, Seung-Bin (Korea Institute of Energy Technology Evaluation and Planning) ;
  • Lee, Ju (Department of Electric Engineering, Hanyang University)
  • Published : 2010.03.31

Abstract

The multi-degrees of freedom surface permanent-magnet motor (Multi-D.O.F. SPM) has several degrees of freedom operations that are defined as the "roll", "yaw", and "pitch". Normally, the torque that is generated to rotate a rotor includes ripples. The analysis of the torque ripples is important for improving motor performance. In terms of the electric analysis, torque ripple occurs as a result of many factors, including the rotor and stator structures, the distribution of the air-gap flux density, and the waveform of the current in the coils. In particular, the torque ripple is an important factor in the stable operation of the Multi-D.O.F. SPM. Therefore, in this work, the torque ripple was analyzed using various types of magnetization for the permanent magnet. An improved model was proposed for the Multi-D.O.F. SPM based on this analysis.

Keywords

References

  1. F. C. Williams, E. R. Laithwaite, and L. S. Piggott, Proc. Inst. Elec. Eng. (London), 104-A, 102 (1956).
  2. G. Vachtsevanos, K. Davey, and L. M. Lee, Control System Magazine 9 (1987).
  3. K. Kaneko, I. Yamada, and K. Ita, J. Dyn. Syst-t. ASME Measurement and Control 111, 398 (1989). https://doi.org/10.1115/1.3153067
  4. K. M. Lee and C. K. Kwan, IEEE Robot. Autom. Mag. 7, 175 (1991). https://doi.org/10.1109/70.68082
  5. D. W. Kang, W. H. Kim, S. C. Go, C. S. Jin, S. H. W, D. H. Koo, and J. Lee, IEEE Trans. Magn. 45, 2819 (2009). https://doi.org/10.1109/TMAG.2009.2018676
  6. T. M. Jahns and W. L. Soong, IEEE T. Ind. Electron. 43, 321 (1996). https://doi.org/10.1109/41.491356
  7. S. H. Lee, H. R. Cha, and H. W. Cho, Journal of Electrical Engineering & Technology 3, 379 (2008). https://doi.org/10.5370/JEET.2008.3.3.379

Cited by

  1. Analysis and Design of a Novel-Shape Permanent Magnet Synchronous Motor for Minimization of Torque Ripple and Iron Loss vol.19, pp.4, 2014, https://doi.org/10.4283/JMAG.2014.19.4.411