한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)
- 한국전기전자재료학회 2003년도 추계학술대회 논문집 Vol.16
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- Pages.340-343
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- 2003
경방향 진동모드를 이용한 적층형 압전변압기의 강압특성
Step-Down Characteristics of Multi-layed Piezo Transformer for Transverse Vibration Mode
- Chong, Hyon-Ho (Changwon National Univ.) ;
- Park, Tae-Gone (Changwon National Univ.) ;
- Kim, Myong-Ho (Changwon National Univ.)
- 발행 : 2003.11.13
초록
This paper presents characteristics of piezo transformer for AC-DC converter. This transformer uses transverse vibration mode and the origin of the structure was the ring dot type transformer. Because, the ring dot type transformers produce only step-up phenomenon, we made a multi-layered ring dot structure for a step-down output. The characteristics of the transformer were simulated by using the ANSYS. And frequency and voltage were measured by changing the load resistance and current. Frequencies that have the maximum output voltage and current were gradually increased, when the resistance were increased. Output voltage and current show a stable linearity according to the input voltage. The maximum output power was expected greater than 20 [W]. So, we expect that this type of multi-layered step-down ring dot transformer can be adopted for a small AC adapters.