多层压电变压器的实验研究

Xiangcheng Chu, Jun-fei Wu, Zhi-han Xu, Longtu Li
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引用次数: 11

摘要

多层压电变压器(MPT)具有体积小、功耗低、效率高、无电磁、功率重量比高等优点,是制造优质变压器和电子仪器电源关键部件的解决方案。本文采用带式铸造技术和Pb(Mg1/3Nb2/3)O3-Pb (Ni1/3Nb2/3)O3-Pb(ZrTi)O3压电材料,在低于980℃的较低烧结温度下共烧了多个MPT原型。原型使用70/30 Ag-Pb内部电极共烧。用OFV056型振动计扫描头测量了它们在MPT原型表面的机械振动。采用带温控器的HP4192A阻抗分析仪对MPT在不同温度下的电参数进行测量。利用激光多普勒干涉仪和辐射温度计研究了不同温度下的振动特性和温度分布。计算了非均匀温度场引起的热应力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experiment research on multilayer piezoelectric transformer
As the multilayer piezoelectric transformer (MPT) has some advantages such as small compact, lower power consume, high efficiency, absence of electromagnetic, high power to weight ratio, they can be solutions for making better transformer and key component of power supplies in electronic instruments. In this paper, using tape casting technology and Pb(Mg1/3Nb2/3)O3-Pb (Ni1/3Nb2/3)O3-Pb(ZrTi)O3 piezoelectric material, many prototypes of MPT were co-fired at a lower sintering temperature of less than 980degC. The prototypes were co-fired using 70/30 Ag-Pb internal electrodes. Their mechanical vibration on the surface of the MPT prototypes was measured using OFV056 Vibrometer Scanning Head. The Impedance Analyzer HP4192A with thermostat was applied to measure electrical parameters of MPT at various temperatures. The vibration behavior and temperature distribution at various temperatures were investigated by using the laser Doppler interferometer and radiation thermometer. And the thermal stress caused by non-uniform temperature field was calculated.
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