Abstract
A method of sensorless rotor position control in noncontact bearings by output parameters of the electromechanical energy converter is proposed. The physical essence of the method is as follows. As the displacement of an electromechanical energy converter rotor along the axes x and y varies, the conductivity of the air gap and, accordingly, of the magnetic conductivity of the air gap changes; i.e., in the case of the rotor displacement, additional harmonic components of the magnetic induction occur that create additional harmonic components of the electromotive force. The estimation of these harmonic components makes it possible to determine the displacement of the rotor without the use of rotor position sensors. The mathematical apparatus and the sensorless rotor position control algorithm based on this apparatus have been developed for practical implementation of the proposed method.
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Original Russian Text © V.E. Vavilov, R.A. Gaisin, A.A. Gerasin, F.R. Ismagilov, I.Kh. Khairullin, 2015, published in Izvestiya Akademii Nauk. Teoriya i Sistemy Upravleniya, 2015, No. 3, pp. 88–96.
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Vavilov, V.E., Gaisin, R.A., Gerasin, A.A. et al. Sensorless control of hybrid magnetic bearings. J. Comput. Syst. Sci. Int. 54, 415–423 (2015). https://doi.org/10.1134/S1064230715020124
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DOI: https://doi.org/10.1134/S1064230715020124