Dynamic Modeling of Three-Phase Asymmetric Power Transformers with Magnetic Hysteresis: No-Load and Inrush Conditions
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 m...
| Main Authors: | , , |
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| Format: | Journal Article |
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IEEE Power Engineering Society
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/10798 |
| _version_ | 1848747631996567552 |
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| author | Moses, Paul Masoum, Mohammad Sherkat Toliyat, H. |
| author_facet | Moses, Paul Masoum, Mohammad Sherkat Toliyat, H. |
| author_sort | Moses, Paul |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T06:52:14Z |
| format | Journal Article |
| id | curtin-20.500.11937-10798 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:52:14Z |
| publishDate | 2010 |
| publisher | IEEE Power Engineering Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-107982017-09-13T14:54:24Z Dynamic Modeling of Three-Phase Asymmetric Power Transformers with Magnetic Hysteresis: No-Load and Inrush Conditions Moses, Paul Masoum, Mohammad Sherkat Toliyat, H. 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. 2010 Journal Article http://hdl.handle.net/20.500.11937/10798 10.1109/TEC.2010.2065231 IEEE Power Engineering Society restricted |
| spellingShingle | Moses, Paul Masoum, Mohammad Sherkat Toliyat, H. Dynamic Modeling of Three-Phase Asymmetric Power Transformers with Magnetic Hysteresis: No-Load and Inrush Conditions |
| title | Dynamic Modeling of Three-Phase Asymmetric Power Transformers with Magnetic Hysteresis: No-Load and Inrush Conditions |
| title_full | Dynamic Modeling of Three-Phase Asymmetric Power Transformers with Magnetic Hysteresis: No-Load and Inrush Conditions |
| title_fullStr | Dynamic Modeling of Three-Phase Asymmetric Power Transformers with Magnetic Hysteresis: No-Load and Inrush Conditions |
| title_full_unstemmed | Dynamic Modeling of Three-Phase Asymmetric Power Transformers with Magnetic Hysteresis: No-Load and Inrush Conditions |
| title_short | Dynamic Modeling of Three-Phase Asymmetric Power Transformers with Magnetic Hysteresis: No-Load and Inrush Conditions |
| title_sort | dynamic modeling of three-phase asymmetric power transformers with magnetic hysteresis: no-load and inrush conditions |
| url | http://hdl.handle.net/20.500.11937/10798 |