Simple equivalent circuit capacitance model for two-winding transformers

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Abstrakt

This paper highlights how a currently available transformer equivalent circuit model incorrectly represents the transformer performance, in scenarios where both sides of the transformer are fixed to a common reference-point. A new transformer equivalent circuit model is presented which accurately predicts the transformer performance. A thorough analysis of the proposed model and a commonly used model is compared and presented. Three foil-wound and three wire-wound transformers with different turns ratio are constructed, with the purpose of evaluating the accuracy of the transformer models impedance prediction. Both models accurately predict the transformer impedance for a turns-ratio equal to one. With turns-ratios different from one, the commonly used model predicts wrong impedance, whereas the proposed model remains accurate. The error in the predicted equivalent capacitance of the measurements is between 32%-170% when using the commonly used model, while it is only 0.6%-9.8% when using the proposed model. The proposed model is therefore the only model that provides accurate impedance analysis for any turns-ratio in any operation scenario.

OriginalsprogEngelsk
Titel2020 IEEE Vehicle Power and Propulsion Conference, VPPC 2020 - Proceedings
ForlagIEEE
Publikationsdatonov. 2020
Artikelnummer9330873
ISBN (Elektronisk)9781728189598
DOI
StatusUdgivet - nov. 2020
Begivenhed17th IEEE Vehicle Power and Propulsion Conference, VPPC 2020 - Virtual, Gijon, Spanien
Varighed: 18. nov. 202016. dec. 2020

Konference

Konference17th IEEE Vehicle Power and Propulsion Conference, VPPC 2020
Land/OmrådeSpanien
ByVirtual, Gijon
Periode18/11/202016/12/2020
SponsorAyuntamiento de Gijon, Catedra Gijon - Smart Cities, et al., Gijon, Gijon Convention Bureau, University of Oviedo
Navn2020 IEEE Vehicle Power and Propulsion Conference, VPPC 2020 - Proceedings

Bibliografisk note

Publisher Copyright:
© 2020 IEEE.

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