Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Steady-State Characteristics of the Piezoelectric Transformer and the Design of the Piezoelectric Inverter

압전 변압기 정상상태 특성과 고효율 냉 음극 방전등용 인버터 설계

  • Kweon, G.H. (RRC & Dept. of Electrical Eng. Chonnam National Univ.) ;
  • Lim, Y.C. (RRC & Dept. of Electrical Eng. Chonnam National Univ.) ;
  • Yang, S.H. (RRC & School of Electrical and Electronic Eng. Honam Univ.) ;
  • Jung, Y.K. (School of Electrical and Electronic Eng. Daebul Univ.)
  • 권기현 (전남대 전기공학과 및 RRC) ;
  • 임영철 (전남대 전기공학과 및 RRC) ;
  • 양승학 (호남대 전기전자공학부 및 RRC) ;
  • 정영국 (대불대 전기전자공학부)
  • Published : 1999.07.19
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Abstract

The Backlight inverter used in the laptop computer is designed in this study. It has been difficult for electromagnetic transformer to enhance the efficiency and compact profile. In this study, (l) the piezoelectric transformer(PT) is used for reducing the loss: (2) the volume of core and winding coil are used in electromagnetic transformer, and (3) the zero voltage switching(ZVS) is used in the driver of the resonant circuit. The modified PT for this paper and the equivalent circuit are supported by the simulation program. ZVS is achieved by Half-Bridge inverter circuit. The result of the experiment shows more than 91% improvement in terms of the efficiency.

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