Reduction of force ripples in linear motors

: pp. 7-10
Lviv Polytechnic National University
Lviv Polytechnic National University
Lviv Polytechnic National University

The influence of higher field harmonics of permanent magnets, and asymmetry of flux linkages according to the phase shift on the value of force ripples in linear motors is studied. The solution to this problem is based on a higher field harmonics analysis in the active zone of a two-phase permanent-magnet cylindrical linear motor. The laws of gate current variation due to the position of the slider, which allows the compensation of these ripples, are established.

  1. A. Beshta, S. Fursa, A. Prohorov, and O. Balahontsev. “Torque pulsation reducing of electric drive based on permanent magnet synchronous machine”, Donetsk National Technical University Scientific Papers, no. 11(186), pp. 54–59, 2011. (Ukrainian)
  2. J. Holtz and L. Springob, “Identification and compensation of torque ripple in high-precision permanent magnet motor drives”, IEEE Trans. On Industrial Electronics, vol. 43, no. 2, pp. 309-320, 1996.
  3. B. Kharchyshyn, T. Dzioba, O. Petrova, and M. Khai. “Force pulsation compensation of redesigned linear motor. Power Energy and Electromechanic Systems”, Scientific Papers of Lviv Polytechnic National University, vol. 763, pp. 102-106, 2013. (Ukrainian)