Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Zero-current-switching full-bridge DC/DC converter with reduced conduction losses for renewable energy MVDC collection systems

  • He, Xiaokun (School of Electrical Engineering, Southeast University) ;
  • Hu, Renjie (School of Electrical Engineering, Southeast University)
  • Received : 2021.06.29
  • Accepted : 2021.12.31
  • Published : 2022.03.20
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Abstract

When compared to the conventional AC collection system, the DC collection system for renewable energy sources presents lots of advantages. High power high-voltage DC/DC converters are essential equipment for medium voltage DC (MVDC) grid. A novel zero-current-switching full-bridge DC/DC converter is proposed in this paper. In particular, a blocking capacitor is introduced to rapidly decay the circulating current to zero. Hence, both the switching loss and conduction loss can be reduced. A scaled-down 120 V/1.2 kV, 2 kW prototype was built to validate the effectiveness of the proposed converter.

Keywords

References

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