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EnglishThe three-phase symmetric short-circuit is a reference fault condition for the qualification of a newly designed permanent magnet (PM) synchronous machine against the risk of irreversible demagnetization. To date, the accurate determination of the peak transient short-circuit current condition requires coupled circuital and transient Finite Element Analysis (FEA) to take magnetic saturation properly into account, and several simulations to determine the worst case pre-fault conditions. This work presents a method for the fast evaluation of the transient short-circuit currents of a PM synchronous machine by manipulation of its flux linkage maps, using the maps obtained via magnetostatic FEA. Besides providing a fast and accessible means of estimate, the flux-map based method gives insights on the effect of the pre-fault conditions, showing that the higher the initial flux linkage, the worse, and that generator operation is more severe than motor operation. The hyper-worst-case short circuit concept is also defined, which is a magnetic property of the machine under test, and a procedure for its fast-FEA computation is given. The method is validated against the results of transient FEA obtained using a commercial software.
Determination of the Symmetric Short-Circuit Currents of Synchronous Permanent Magnet Machines Using Magnetostatic Flux Maps / Ferrari, Simone; Ragazzo, Paolo; Dilevrano, Gaetano; Pellegrino, Gianmario. - ELETTRONICO. - (2021), pp. 3697-3704. ((Intervento presentato al convegno 2021 IEEE Energy Conversion Congress and Exposition (ECCE) tenutosi a Vancouver, BC, Canada nel 10-14 Oct. 2021 [10.1109/ECCE47101.2021.9595806].
| Titolo: | Determination of the Symmetric Short-Circuit Currents of Synchronous Permanent Magnet Machines Using Magnetostatic Flux Maps | |
| Autori: | ||
| Data di pubblicazione: | 2021 | |
| Abstract: | The three-phase symmetric short-circuit is a reference fault condition for the qualification of a... newly designed permanent magnet (PM) synchronous machine against the risk of irreversible demagnetization. To date, the accurate determination of the peak transient short-circuit current condition requires coupled circuital and transient Finite Element Analysis (FEA) to take magnetic saturation properly into account, and several simulations to determine the worst case pre-fault conditions. This work presents a method for the fast evaluation of the transient short-circuit currents of a PM synchronous machine by manipulation of its flux linkage maps, using the maps obtained via magnetostatic FEA. Besides providing a fast and accessible means of estimate, the flux-map based method gives insights on the effect of the pre-fault conditions, showing that the higher the initial flux linkage, the worse, and that generator operation is more severe than motor operation. The hyper-worst-case short circuit concept is also defined, which is a magnetic property of the machine under test, and a procedure for its fast-FEA computation is given. The method is validated against the results of transient FEA obtained using a commercial software. | |
| ISBN: | 978-1-7281-5135-9 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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| File | Descrizione | Tipologia | Licenza | |
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| 2021127108.pdf | 2. Post-print / Author's Accepted Manuscript | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri | |
| Determination_of_the_Symmetric_Short-Circuit_Currents_of_Synchronous_Permanent_Magnet_Machines_Using_Magnetostatic_Fl.pdf | 2a Post-print versione editoriale / Version of Record | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
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