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A Study on DC-DC Converter Development for LRT Wireless Power Supply

  • Han, Young-Jae (Railroad Type Approval Team, Korea Railroad Research Institute) ;
  • Lee, Su-Gil (Propulsion System Research Team, Korea Railroad Research Institute) ;
  • Lee, Young-Ho (R&D Center, Woojin Industrial Systems, Co., Ltd)
  • Received : 2018.12.08
  • Accepted : 2018.12.25
  • Published : 2018.12.31

Abstract

In this paper, we have proposed the development of DC-DC converter for LRT power supply. First of all, we have studied converter technology, main functions and characteristics were determined. In also, the converter design was carried out to meet the system design conditions. Based on this design, converter simulation is performed to enable stable charging and discharging of the vehicle system. We have performed the Light-load test according to charge mode, discharge mode. As a result, the manufactured converter performance was verified through the load test, and it's stability was confirmed.

Keywords

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Fig. 1. The Main Circuit Diagram of DC/DC Converter

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Fig. 2. The Concept Design of DC/DC Converter

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Fig. 3. The Picture of DC/DC Converter

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Fig. 4. The Arrangement of DC/DC Converter

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Fig. 5. Charge Mode (Buck operate)

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Fig. 6. Discharge Mode (Boost operate)

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Fig. 7. The Relation of Voltage and Current when IGBT Switching

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Fig. 8. Simulation Block (PSIM)

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Fig. 9. The Simulation Result(Voltage Controller Response)

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Fig. 10. The Simulation Result(Charge)

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Fig. 11. The Simulation Result(Discharge)

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Fig. 12. The load Test Layout (Buck Charge mode (a))

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Fig. 12. The load Test Layout (Boost Discharge mode (b))

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Fig. 13. The Light-load Test(Charge Mode)

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Fig. 14. The Light-load Test (Discharge Mode)

Table 1. Channel Measurement Data

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