Electrical Characteristics of the Piezoelectric Transformer as a Function of Piezoelectric Properties and Load Variations

압전특성 및 부하변화에 따른 압전트랜스포머의 전기적 특성

  • Published : 2001.04.01

Abstract

The piezoelectric transformers of 2.0x10x48 ㎣ size were fabricated with PSN-PMN-PZT(T10 and PNW-PMN-PZT(T2) composition ceramics. Effects of micro structural and piezoelectric properties on the electrical characteristics of the piezoelectric transformers were investigated. Under the fixed output power of 6 W, temperature rise of T1 transformer at the optimum load was smaller than T2 one because of fine grain size effect. Voltage step-up ratio of T1 transformer showed higher value than T2 one T1 transformer showed an excellent properties with voltage step-up ratio of 12.41, efficiency of 95.23% and temperature rise of 7.2$^{\circ}C$ at 200㏀ load resistance. And also, T2 transformer showed an excellent properties with voltage step up ratio of 9.81, efficiency of 95.51% and temperature rise of 9$^{\circ}C$ at 150㏀ load resistance.

References

  1. 전기전자재료학회논문지 v.13 no.4 PSN-PZT계 세라믹스를 이용한 고출력 압전 트랜스포머의 전기적 특성 이용우;류주현;윤광희;정회승;서성재;김종선
  2. Jpn. J. Appl. Phys. v.39 Electrical characteristics of the Contour Vibration Mode Piezoelectric Transformer with Ring/Dot Electrode Area Ratio Yoo, Juhyun;Yoon, Kwanghee;Lee, Yongwoo;Suh, Sungjae;Kim, Jongsun;Yoo, Chungsik
  3. Jpn. J. Appl. Phys. v.32 Piezoelectric HF Resonator with Zero Temperature Coefficient Long. Wu;Yi-Yeh. Lee
  4. Jpn. J. Appl. Phys. v.38 Small Multilayer Piezoelectric Transformers with High Power Density Y. Sasaki;M. Yamamoto;A. Ochi;T. Inoue;S. Takahashi
  5. 전기전자재료학회논문지 v.13 no.8 PSN-PMN-PZT 세라믹스의 Zr/Ti비에 빠른 전기적 특성과 공진주파수의 온도안정성 류주현;윤광희;민석규;이명수;서성재
  6. Solid State Magnetic and Dielectric Devices H. W. Katz
  7. Piezoelectric Actuators and Ultrasonic Motors K. Uchino
  8. 전기전자재료학회논문지 v.11 no.10 집중등가회로를 사용한 압전 변압기의 승압비 및 효율 해석 류주현;이용우;윤광희;정회승;정영호;박창엽