| Titre : | Dynamic modeling of three-phase asymmetric power transformers with magnetic hysteresis : no-load and inrush conditions (2011) |
| Auteurs : | Moses, P. S., Auteur ; Masoum, M. A. S., Auteur ; Toliyat, H. A., Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | IEEE transactions on energy conversion (Vol. 25, N° 4, Décembre 2010) |
| Article en page(s) : | pp. 1040 - 1047 |
| Note générale : | energy conversion |
| Langues : | Anglais |
| Tags : | Ferroresonance ; magnetic circuits ; hysteresis ; nonlinear functions ; power transformers ; time-domain analysis |
| Résumé : | A new dynamic model of a three-phase three-leg transformer for steady-state and transient operating conditions is proposed in this paper. With very few exceptions, the existing models oversimplify the magnetic interactions in multileg core topologies and employ single-value nonlinear functions for modeling core nonlinearities. Unfortunately, this does not provide sufficient accuracy for a wide range of dynamic disturbances such as dc bias, ferroresonance, and inrush. For this purpose, a new time-domain model based on magnetic-circuit theory is developed to include dynamic-hysteresis behavior (major and minor loops) in asymmetric three-leg core topologies. Furthermore, a new analysis is performed to study the impacts of hysteresis on no-load and transient inrush current behavior in three-phase transformers. Simulation results have been successfully compared with measurements to verify the accuracy of the proposed model. |
| En ligne : | http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5575408&sortType%3Dasc_p_Sequence%26filter%3DAND%28p_IS_Number%3A5635301%29 |
