대한전기학회논문지:전기물성ㆍ응용부문C (The Transactions of the Korean Institute of Electrical Engineers C)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

CCFL 구동용 압전 변압기의 특성

The Characteristics of Piezoelectric Transformer for Driving CCFL

  • Jeong, Su-Hyun (Dept. of Electrical Engineering, Daewon Science College) ;
  • Lee, Jong-Sub (Dept. of Electric Engineering, Graduate School of Chungbuk National University) ;
  • Hong, Jong-Kuk (Dept. of Electric Engineering, Graduate School of Chungbuk National University) ;
  • Chae, Hong-In (Juseong College) ;
  • Yoon, Man-Soon (Juseong College) ;
  • Lim, Kee-Joe (Dept. of Electric Engineering, Chungbuk National University)
  • 발행 : 2000.05.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, the characteristics of piezoelectric transformer is studied for driving CCFL(Cold Cathode Fluorescent Lamp). In order to investigate the effects of geometrical dimensions, λvibration-mode type piezoelectric transformers with different sizes in the length(l), width$(\omega)$ and thickness(t) are made of ceramics with PZT-PMWS compositions. The increases in temperature and aging effect are also measured in the transformer of PT-3 sample under the condition of operation continuously for 10 hrs. As the results of dimensional effects, the output power and voltage step-up ratio are largely affected by the ratio of length to thickness(l/t) rather than that of length to $width(l/\omega)$. The output power and step-up ratio are increased with increasing l/t. On case of PT-3, the output voltages are 510[Vrms] at 36[Vrms] in input voltage, $100[k\Omega]$ in load resistance. Temperature increases and variation of output voltages are $10[^{\circ}C]$ and less than 5[%], respectively.

키워드

참고문헌

  1. Hiroshi Sasaki et al, 'Development of high Voltage DC Power Supply Using Piezoelectric Transformer', NEC Technical Journal, Vol. 50, No. 10, pp. 80 - 84, 1997
  2. Fuda Y et al, 'Piezoelectric Transformer for cold Cathode Fluorescent Lamp Inverter', Japan Journal of Applied Physics, Vol. 36, No. 5B, pp.3050 - 3052, 1997
  3. Zaitsu T et al, 'Piezoelectric Transformer Converter with PWM Control', IEICE Transactions on Communications, Vol. E80-B, No. 7, pp. 1035 - 1044, 1997
  4. Kawai H et al, 'High Power Transformer Employing Piezoelectric Ceramics', Japanese Journal of Applied Physics, Vol. 35, No. 9B, pp. 5015 - 5017, 1996
  5. H. Fukunaga et al, 'Effect of Dimension in Characteristics of Rosen-Type Piezoelectric Transformer', Proc. of the Record of the 29th Annual IEEE Power Electronics Specialists Conference, Vol. 2, pp. 1504 - 1510, 1998 https://doi.org/10.1109/PESC.1998.703267
  6. Anita M. Flynn et al, 'Fundamental Limits on Energy Transfer and Circuit Consideration for Piezoelectric Transformers', Proc. of the Record of the 29th Annual IEEE Power Electronics Specialists Conference, Vol. 2, pp. 1463 - 1471, 1998 https://doi.org/10.1109/PESC.1998.703251
  7. Sadayuki Takahashi et al, 'Vibration-Level Characteristics for Iron-Doped Lead-Zirconate-Titanate Ceramic', Japan Journal of Applied Physics, Vol. 32, No. 5B, pp. 2422 - 2425, 1993
  8. Sadayuki Takahashi et al, 'Electro-Mechanical Characteristics of Lead-Zirconate-Titanate Ceramics Under Vibration-Level Change', ISAF '94 Proc. of The Ninth IEEE, pp. 377 - 382, 1994 https://doi.org/10.1109/ISAF.1994.522381