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Symmetrical Cockcroft-Walton circuit for Transformerless High Step-Up DC-DC Converter

변압기 없는 고승압 직류 컨버터용 대칭형 Cockcroft-Walton 회로

Cha, Dae-Joong;Baek, Ji-Eun;Ko, Kwang-Cheol
차대중;백지은;고광철

  • Received : 2015.05.19
  • Accepted : 2015.07.09
  • Published : 2015.08.31

Abstract

High Step-up DC-DC Converters have been demanded for renewable energy applications. Transformer or coupled inductor is generally used to boost output voltage of converters. This methods can relatively obtain high voltage than others, whereas have heavy weight and high cost. To complement these disadvantages, we studied transformerless high step-up DC-DC converter. In various transformerless topologies, Boost converters combined with Cockcroft-Walton have studied. In this paper, we proposed a symmetrical Cockcroft-Walton circuit for transformerless high step-up DC-DC converter. Finally, we simulated proposed converter to compare with existing converter. As a result, proposed converter has higher duty ratio or lower cost than existing transformerless converters which are discussed in this paper.

Keywords

Cockcroft-Walton;Voltage Multiplier;High Step-up DC-DC Converter;Renewable Energy

References

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Acknowledgement

Grant : 친환경 전기 에너지 변환 및 관리 기술