The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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A Study on the Characteristics of Small Sized High Efficiency AC/DC Converter Using Piezoelectric Transformer

압전변압기를 이용한 소형.고효율 AC/DC 컨버터의 특성에 관한 연구

  • Published : 2004.04.01
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Abstract

Piezoelectric transformer(PZT) can be used advantageously in high output voltage power supply. Recently, it also can be used in AC/DC Converter for miniaturizing size nd lightening weight. The modeling of PZT was performed by the calculation method through the physical and electrical constants of the material. The attributes of PZT were derived by an approximate analysis for output voltage gain, and resonant frequency. The proposed method is verified by computer simulation and experiment.

일반적으로 압전변압기는 고압을 출력하는 전원장치로 사용되고 있으나, 최근 어댑터와 같은 AC/DC 전원장치에 이를 채용하려는 움직임이 활발히 전개되고 있다. AC/DC 컨버터의 소형 경량화론 위해 기존의 권선형 변압기 대신 압전변압기는 AC/DC 컨버터용이 아닌 LCD 백-라이트구동용으로 제작된 압전변압기(piezoelectric transformer)를 사용하여 AC/DC 컨버터의 기본 특성을 고찰하고자 한다. 압전변압기의 재질, 특성 값으로부터 등가회로의 모델링을 수행하고, 이를 시뮬레이션과 실험을 통하여 검증한다.

Keywords

References

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  2. IEEE CIEP 2000 New control method of piezoelectric transformer converter by PWM and PFM for wide range of input voltage Hamamura,S.;Kurose,D.;Ninomiya,T.Yamamoto,M.
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