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A study on High Frequency DC-DC Converter Drive using a Piezoelectric Transformer

압전 변압기를 이용한 고주파 DC-DC 컨버터 구동에 관한 연구

  • Hwang, Lark-Hoon (Dept. of Electrical Engineering, Semyung University) ;
  • Na, Seung-Kwon (Dept. of Biomedical Engineering, Korea Polytechnic III College) ;
  • Choi, Gi-Ho (Dept. of Electrical Control Engineering, Korea Polytechnic III College)
  • 황락훈 (세명대학교 전기공학과) ;
  • 나승권 (한국 폴릭텍 III 대학 원주 캠퍼스 의용공학과) ;
  • 최기호 (한국 폴릭텍 III 대학 원주 캠퍼스 전기제어학과)
  • Published : 2010.02.28

Abstract

Recently, as the piezoelectric transformer technology develops, piezoelectric transformer may become a variable alternative to magnetic transformers in various applications. Because it was have to favorable characteristics such as electromagnetic-noise free, compact size, higher efficiency, and superior power density, linkage flux, noiseless, etc. its resonance frequency was used to output waveform of a sine wave. In this paper, the switching mode power supply of about 87.2[KHz] is driven by the multilayer thickness vibration mode piezoelectric transformer and the DC to DC converter drive circuit using an electrical equivalent circuit is proposed. Also, it was possible to drive power source device of the high-luminance LED by propose circuits.

최근, 압전 변압기 기술의 급속한 발전으로 권선형 변압기를 대체할 수 있는 다양한 분야에 응용되고 있다. 압전 변압기는 자계의 잡음이 없고, 크기가 소형화되며 고효율과 고전력 밀도, 누설자속이 없어 노이즈 발생이 없고, 공진주파수만을 이용하므로 출력파형이 정현파에 가까워 고조파 잡음이 없는 등 권선형 변압기에 비해서 여러 가지 장점을 갖고 있다. 본 연구는 87.2[KHz]정도의 스위칭 모드에서 두께진동 모드 적층형 압전 변압기를 이용하여 전기적인 등가회로를 적용하여 DC-DC컨버터를 동작 하였다. 또한 DC-DC컨버터를 제안된 회로에 의해서 구동 고휘도 LED 구동 전원장치로써의 가능성을 제시 하였다.

Keywords

References

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