Design Considerations for a Medium Frequency Transformer in a Line Side Power Conversion System
2004 (English)In: Proceedings of the 35th Annual IEEE Power Electronics Specialist Conference, PESC 2004, IEEE , 2004, 704-710 p.Conference paper (Refereed)
Design considerations are presented for a medium frequency transformer in a line side power conversion system for electric railway traction. The system employs soft commutation in order to reduce switching losses and allow for high operating frequency of the transformer. Two different designs are evaluated; The first one is dry insulated and the second one is liquid-immersed. Calculations indicate that a 1 MVA transformer operating at 4 kHz could be realized with an active weight of below 150 kg for both dry and liquid-immersed transformer concepts. The transformers are modeled magnetically, electrically and thermally, and a geometric optimization procedure based on a cost function is applied to achieve an optimum design.
Place, publisher, year, edition, pages
IEEE , 2004. 704-710 p.
, IEEE power electronics specialists conference records, ISSN 0275-9306
Boundary layers; Dielectric materials; Electric commutation; Electric insulation; Electric railroads; Electric traction; Gravitational effects; Heat flux; Heat transfer coefficients; Power converters; Switching
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject Järnvägsgruppen - Elsystem
IdentifiersURN: urn:nbn:se:kth:diva-10422DOI: 10.1109/PESC.2004.1355834ISI: 000224587600113ScopusID: 2-s2.0-8744291981ISBN: 0-7803-8399-0OAI: oai:DiVA.org:kth-10422DiVA: diva2:217092
QC 201007232009-05-132009-05-132010-12-06Bibliographically approved