Some Design Considerations For The 6.5 KV Igbt-based Half-bridge Dc/dc Converter

Dmitri Vinnikov

doi:10.18618/REP.2008.2.055060

Authors

Dmitri Vinnikov Department of Electrical Drives and Power Electronics, Tallinn University of Technology Ehitajate tee 5, Tallinn, 19086, Estonia. Tel. (+372) 6203705, Fax. (+372) 6203701

DOI:

https://doi.org/10.18618/REP.2008.2.055060

Keywords:

DC/DC converter, design, efficiency, highfrequency transformer, power converter

Abstract

The 6.5 kV insulated gate bipolar transistor (IGBT) is a new promising power device for high-voltage high-power applications. Due to its increased voltage blocking capability, the new HV IGBT can serve as a good replacement for GTO and IGCT thyristors in medium or medium-to-high power applications. One of its general application fields is railway traction. The paper discusses design and development considerations of the 50-kW auxiliary power supply (APS) to be used in 3.0 kV DC commuter trains. Focus is on the implementation of 6.5 kV IGBTs in the primary inverter of APS to improve power density, integrity and reliability of the whole system. For instance, analysis and simulation of main functional blocks of a converter for different operation points are described. General design considerations mainly concerning the inverter stage, power transformer and output rectifier are specified in the paper. Some design optimization possibilities are proposed.

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Author Biography

Dmitri Vinnikov, Department of Electrical Drives and Power Electronics, Tallinn University of Technology Ehitajate tee 5, Tallinn, 19086, Estonia. Tel. (+372) 6203705, Fax. (+372) 6203701

received the Dipl.-Ing, M.Sc. and Ph.D. degrees in electrical engineering from Tallinn University of Technology, Tallinn, Estonia, in 1999, 2001 and 2005, respectively. He is presently a Senior Reseacher in the Department of Electrical Drives and Power Electronics, Tallinn University of Technology. He has authored more than 20 published papers on rolling stock power converters design and development and is the holder of several Utility Models in this application field. His research interests include switchmode power converters, modeling and simulation of power systems, applied design of power converters and control systems and application and development of energy storages. He is Project Leader for innovative onboard power supplies and traction drives for the rail vehicles.

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