Title :
Optimal design and experimental validation of a Medium-Frequency 400kVA power transformer for railway traction applications
Author :
Villar, I. ; Mir, Luis ; Etxeberria-Otadui, I. ; Colmenero, J. ; Agirre, X. ; Nieva, Txomin
Abstract :
This paper presents the application of a Medium-Frequency (MF) Transformer design methodology applied to a 400kVA transformer intended for railway traction multi-voltage applications. First, a full-scale prototype operating at a moderate frequency (<;1kHz), based on a silicon-steel transformer and a Dual Active Bridge (DAB) has been developed and experimentally verified. Then, in order to reduce the volume and weight of the system, a second full-scale prototype has been designed based on a higher operation frequency (>;5kHz), a nanocrystalline transformer and a Series Resonant Converter (SRC), which has evolved towards a LLC Resonant Converter. A major volume and weight reduction (more than 85%) has been achieved between both designed transformers.
Keywords :
bridge circuits; power transformers; railways; resonant power convertors; LLC resonant converter; SRC; dual active bridge; medium frequency power transformer; nanocrystalline transformer; railway traction multivoltage applications; series resonant converter; silicon steel transformer; Inductance; Magnetic materials; Power transformers; Prototypes; Transformer cores; design methodology; high-power density; medium frequency; power transformer;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2012 IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
978-1-4673-0802-1
Electronic_ISBN :
978-1-4673-0801-4
DOI :
10.1109/ECCE.2012.6342754
