压电陶瓷变压器的研究进展

Progress of Piezoelectric Ceramic Transformer

压电陶瓷变压器是一种新型固态电子器件,具有高转换效率、高能量密度、结构简单、体积小、无电磁噪声的特点,在电子产品微型化的过程中起到了十分重要的作用。本文回顾了压电陶瓷变压器的发展历史,阐述了压电陶瓷变压器的基本工作原理,介绍了压电陶瓷变压器所用的新型压电材料、振动模式和几何结构、外围电路三大方面的最新研究进展。通过对比国内外在压电变压器领域的研究和应用现状,指出了我国发展压电变压器的优势和前景,并提出了压电变压器产业的发展方向。

Piezoelectric transformers are new solid-state electronic devices. It is characterized by high conversion efficiency, high power density, simple structure, small size and non-electromagnetic noise. It plays a major role in miniaturization of electronic products. In this paper, the history of the piezoelectric transformer is reviewed ,with the basic operating principle of the piezoelectric transformer described. Three important aspects are introduced, respectively about the research progress of the novel piezoelectric material, the vibration mode and geometrical structure, external circuit. Advantage and prospects on development of piezoelectric transformers in China is pointed out by comparing the research and application status of the piezoelectric transformers. And the developing direction of the industry about piezoelectric transformers is put forward.