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Study of very fast transient overvoltages in air-cored pulsed transformers
KTH, Skolan för elektro- och systemteknik (EES), Elektroteknisk teori och konstruktion.
2012 (Engelska)Ingår i: Compel, ISSN 0332-1649, Vol. 31, nr 2, s. 658-669Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Purpose - The purpose of this paper is to study very fast transient overvoltages (VFTOs) in the secondary winding of air-cored Tesla transformers and also study the resulting electric field stresses. Design/methodology/approach - An exhaustive model based on Multi-conductor Transmission Lines (MTLs) theory has been used. The governing telegraphist's equations have been solved by Finite Difference Time Domain (FDTD) method. Findings - The results demonstrated that there are some overvoltages at the end and middle turns that should be considered in insulation design. The magnitudes of these overvoltages are several times more than the steady state value of the corresponding turn which cause very high electric field stresses. Originality/value - The paper describes results obtained from an original and innovative implementation of FDTD method in transmission line modelling and is applied properly to air-cored pulse transformers.

Ort, förlag, år, upplaga, sidor
2012. Vol. 31, nr 2, s. 658-669
Nyckelord [en]
Very fast transient overvoltages, Finite difference time domain, Multi-conductor transmission line, Electric field stresses and air-cored pulsed transformer, Voltage, Transformers
Nationell ämneskategori
Elektroteknik och elektronik
Identifikatorer
URN: urn:nbn:se:kth:diva-94069DOI: 10.1108/03321641211200635ISI: 000302384700019Scopus ID: 2-s2.0-84857769806OAI: oai:DiVA.org:kth-94069DiVA, id: diva2:525614
Konferens
3rd International Advanced Research Workshop on Transformers (ARWtr), OCT 03-06, 2010, Santiago de Compostela, Spain
Anmärkning
QC 20120508Tillgänglig från: 2012-05-08 Skapad: 2012-05-07 Senast uppdaterad: 2017-12-07Bibliografiskt granskad

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Mousavi, Seyedali A.
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Elektroteknisk teori och konstruktion
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