Dynamic Modeling and Parametric Analysis of the Magnetic Stiffness on a Radial Heteropolar Rotor Magnetic Bearing (RMB)

Authors

  • Rodrigo Trentini Federal Institute of Santa Catarina, Brazil
  • Daniel dos Santos Federal Institute of Santa Catarina, Brazil
  • Oscar Henrique Reichow Federal Institute of Santa Catarina, Brazil
  • Rodrigo Piontkewicz Federal Institute of Santa Catarina, Brazil

DOI:

https://doi.org/10.53375/ijecer.2021.18

Keywords:

Rotor Magnetic Bearing, Magnetic Stiffness, Sensitivity

Abstract

This paper presents both the dynamic modelling and the study of the variation of certain physical parameters (pole area, gap and base current) that change the magnetic stiffness of a radial heteropolar Rotor Magnetic Bearing (RMB) aiming at the analysis of the magnitude of its control current for three different equilibrium points. The RMB is modelled as a fully uncoupled symmetric active 8-pole magnetic bearing. The analysis is performed using spectral cubes for a better visualisation of the posed problem. The saturation analysis of the RMB is also performed. At last, it is shown that a control current with the same magnitude as the base current is reached with minimum pole area and air gap s0 = 528 um.

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Published

13.06.2021

How to Cite

Trentini, R., dos Santos, D., Reichow, O. H., & Piontkewicz, R. (2021). Dynamic Modeling and Parametric Analysis of the Magnetic Stiffness on a Radial Heteropolar Rotor Magnetic Bearing (RMB). International Journal of Electrical and Computer Engineering Research, 1(1), 9–14. https://doi.org/10.53375/ijecer.2021.18