Magnetically Nonlinear Dynamic Models of Synchronous Machines and Experimental Methods for Determining Their Parameters

Gorazd Štumberger, Bojan Štumberger and Tine Marčič
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Gorazd Štumberger: Faculty of Electrical Engineering and Computer Science, University of Maribor, 2000 Maribor, Slovenia
Bojan Štumberger: Faculty of Energy Technology, University of Maribor, 8720 Krško, Slovenia
Tine Marčič: Energy Agency of the Republic of Slovenia, 2000 Maribor, Slovenia

Energies, 2019, vol. 12, issue 18, 1-22

Abstract: This paper deals with rotary and linear synchronous reluctance machines and synchronous permanent magnet machines. It proposes a general method appropriate for determining the two-axis dynamic models of these machines, where the effects of slotting, mutual interaction between the slots and permanent magnets, saturation, cross-saturation, and—in the case of linear machines—the end effects, are considered. The iron core is considered to be conservative, without any losses. The proposed method contains two steps. In the first step, the dynamic model state variables are selected. They are required to determine the model structure in an arbitrarily chosen reference frame. In the second step, the model parameters, described as state variable dependent functions, are determined. In this way, the magnetically nonlinear behavior of the machine is accounted for. The relations among the Fourier coefficients of flux linkages and electromagnetic torque/thrust are presented for the models written in dq reference frame. The paper presents some of the experimental methods appropriate for determining parameters of the discussed dynamic models, which is supported by experimental results.

Keywords: synchronous machines; dynamic models; nonlinear magnetics; parameter estimation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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