To read the full version of this content please select one of the options below:

Determination of a dynamic radial active magnetic bearing model using the finite element method

Boštjan Polajžer (Faculty of Electrical Engineering and Computer Science, University of Maribor, Maribor, Slovenia)
Gorazd Štumberger (Faculty of Electrical Engineering and Computer Science, University of Maribor, Maribor, Slovenia)
Drago Dolinar (Faculty of Electrical Engineering and Computer Science, University of Maribor, Maribor, Slovenia)
Kay Hameyer (Institut für Elektrische Maschinen, RWTH Aachen, Aachen, Germany)

Abstract

The dynamic model of radial active magnetic bearings, which is based on the current and position dependent partial derivatives of flux linkages and radial force characteristics, is determined using the finite element method. In this way, magnetic nonlinearities and cross‐coupling effects are considered more completely than in similar dynamic models. The presented results show that magnetic nonlinearities and cross‐coupling effects can change the electromotive forces considerably. These disturbing effects have been determined and can be incorporated into the real‐time realization of nonlinear control in order to achieve cross‐coupling compensations.

Keywords

Citation

Polajžer, B., Štumberger, G., Dolinar, D. and Hameyer, K. (2004), "Determination of a dynamic radial active magnetic bearing model using the finite element method", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 23 No. 3, pp. 783-788. https://doi.org/10.1108/03321640410540728

Publisher

:

Emerald Group Publishing Limited

Copyright © 2004, Emerald Group Publishing Limited