压电陶瓷变压器.docVIP

压电变压器直流高压电源设计 摘要 压电陶瓷变压器是一种新型的压电换能器件，当在压电陶瓷变压器输入端（驱动部份）加入交变电压时，Design of Piezoelectric Transformer DC high voltage power supply ABSTRACT Piezoelectric ceramic transformer is a new type of piezoelectric transducer device, the size is small, simple structure, non-combustible, resistance to radiation, high reliability. Piezoelectric Transformers in a television picture tube, radar showed tube, electrostatic copier, electrostatic dust, small power laser diodes, ion generator, high voltage polarization, and other equipment was widely used. The topic is the study piezoelectric transformer design of the 10 kV DC high voltage power supply. When the piezoelectric ceramic transformer input (some drivers) by adding alternating voltage, reverse piezoelectric effect. have artifacts along the length direction of the stretching vibration, the input energy into mechanical energy; and some power is through piezoelectric effect of converting mechanical energy to electrical energy so the output voltage for artifacts than the length of thickness, Therefore, the output impedance than input impedance, the output voltage than input voltage. General Fu few to a few tens of volts of alternating voltage, available thousands of volts above the high pressure output. Keywords: Piezoelectric Ceramic Transformer DC high voltage Impedance 目录 第一章 综述 1 1.1压电陶瓷变压器发展概况 1 1.2压电陶瓷变压器研究进展 2 1.3 压电变压器的应用 5 1.4本课题研究的意义 7 第二章 压电陶瓷变压器的工作原理和基本特性 9 2.1 压电陶瓷变压器的结构和工作原理 9 2.2压电陶瓷变压器的等效电路 11 2.3压电陶瓷变压器的工作特性 12 第三章 压电陶瓷变压器高压电源设计 18 3.1设计思想 18 3.2压电陶瓷变压器的选取和计算 19 3.3电路的设计 21 3.4驱动变压器的设计与计算 22 3.5倍压整流电路的设计 26 第四章 压电陶瓷变压器高压电源性能测试 28 第五章 结论 30 致谢 31 参考文献 32 第一章 综述 1.1压电陶瓷变压器发展概况 压电变压器是 20世纪 50年代后期开始研制的一种新型压电器件，最早由c．A．Rosen于 1956年发明。但是，那时的压电陶瓷材料是以钛酸钡 (BaTiO3)为主，其压电性能低，制成的压电变压器升压比很低，仅有 50～60倍，输出电压仅为 3 kV，实用价值不大，故未能引起人们的重视。随着锆钛酸铅 (PbZrTiO3) 等高和高压电陶瓷材料的出现，压电变压器的研制才取得了显著的进展。目前已能生产升压比为300～500，输出功率 50 w 以上的压电变压器。随着信息处理设备和通讯设备日益小型化的发展，电源设备小型化的需求越来越高，加上功能陶瓷材料的迅猛发展，压电变压器的应用范围越来越广。目前压电变压器已用于电视显像管、雷达显示管、静电复印机、静