Thermal Evaluation of a Medium Frequency Transformer in a Line Sider Conversion System
2009 (English)In: Proceedings of the 13th International European Electronics Conference and Exhibition, EPE '09, IEEE , 2009, 2517-2526 p.Conference paper (Refereed)
A central part of a medium frequency conversion system is the transformer. A medium frequency transformer for railway propulsion may be stressed beyond 30kV with voltage slopes around 50kV/mu s depending on topology while the geometric dimensions are small. A 170kVA transformer prototype operated at 4 kHz has been developed and tested.
A transient thermal model of the transformer is developed and verified experimentally. The transient thermal behavior is important in propulsion applications where the conversion system is often heavily overloaded. Simulations indicate that the overloading capability of the transformer is comparable to a conventional traction transformer. Experimental results are in good agreement with the model.
Place, publisher, year, edition, pages
IEEE , 2009. 2517-2526 p.
Transformer, High frequency power converter, Thermal design, Rail vehicle
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject Järnvägsgruppen - Elsystem
IdentifiersURN: urn:nbn:se:kth:diva-10426ISI: 000275384101045ScopusID: 2-s2.0-72949091735ISBN: 978-1-4244-4432-8OAI: oai:DiVA.org:kth-10426DiVA: diva2:217111
2009 13th European Conference on Power Electronics and Applications, EPE '09; Barcelona; 8 September 2009 through 10 September 2009
QC 201103042009-05-132009-05-132014-10-09Bibliographically approved