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Study on Soft-Switching Transformers Inductor Boost Converter for Fuel Cell Powered Railway Vehicle

  • Jung, No-Geon (Dept. of Electrification System Research Team, Korea Railroad Research Institute) ;
  • Kim, Jae-Moon (Dept. of Transportation System Engineering, Korea National University of Transportation)
  • Received : 2018.04.30
  • Accepted : 2018.07.22
  • Published : 2018.11.01

Abstract

In Korea, there are no instances where a hydrogen fuel cell power generation system has been used in a railway vehicle. Only the basic topology has been studied. In the previous study, conventional converters using a single switch were applied to the fuel cell power generation system. Therefore, current stress on the switch at converter on-off transitions would be large when controlling a large-capacity railway vehicle. In addition, since the input side ripple is also large, there is a problem with a shortening of the lifetime of both the fuel cell power generation system and the inductor. In this paper, a soft-switching transformer inductor boost converter for fuel cell powered railway vehicles was proposed. A technique to reduce both the switching current stress generated during on-off transitions, and the input ripple current flowing in the inductor were studied. The soft-switching TIB converter uses a transformer-type inductor to configure the entire circuit in an interleaved method, and reduces both input current ripple and the current ripple of the inductor and switch.

Acknowledgement

Grant : Research on rail vehicle components interface and modularity guidelines plan

Supported by : Korea National University of Transportation

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