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Title: | Impact of dynamic cross-saturation on accuracy of saturated synchronous machine models | Authors: | Levi E. Levi V. |
Issue Date: | 1-Jan-2000 | Journal: | IEEE Power Engineering Review | Abstract: | Cross-saturation effect in synchronous machines has been a subject of considerable attention in recent years. Inclusion of the cross-saturation in the machine model has two consequences. The first one, called here 'steady-state cross-saturation,' consists of dependence of the steady-state d-q axis magnetizing inductances on the currents in both axes. The second one, termed here 'dynamic cross-saturation,' is the existence of nonzero elements in the system matrix that describe cross coupling between the d- and q-axes. Dynamic cross-saturation appears in all the saturated machine models, regardless of the selected set of state-space variables, with the exception of the winding flux linkage state-space model. The aim of this paper is to compare behavior of various models when dynamic cross-saturation is neglected. It is shown that the impact of dynamic cross-saturation on accuracy depends on the selected set of state-space variables. In the majority of cases omission of dynamic cross-saturation leads to very inaccurate results. However, it is found that for one particular class of models omission of dynamic cross-saturation has practically no impact on accuracy. These models therefore fully describe the complete saturation effect by means of only continuous variation of the d-q axis magnetizing inductances. | URI: | https://open.uns.ac.rs/handle/123456789/13320 | ISSN: | 02721724 | DOI: | 10.1109/60.867004 |
Appears in Collections: | FTN Publikacije/Publications |
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