Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA, USA.
IEEE Trans Ultrason Ferroelectr Freq Control. 2011 Dec;58(12):2504-15. doi: 10.1109/TUFFC.2011.2113.
A multilayer laminated piezoelectric Pb(Zr(1-x)Ti(x))O(3) (PZT) ceramic transformer, operating in a half- wavelength longitudinal resonant mode (λ/2 mode), has been analyzed. This piezoelectric transformer is composed of one thickness-polarized section (T-section) for exciting the longitudinal mechanical vibrations, two longitudinally polarized sections (L-section) for generating high-voltage output, and two insulating layers laminated between the T-section and L-section layers to provide insulation between the input and output sections. Based on the piezoelectric constitutive and motion equations, an electro-elasto-electric (EEE) equivalent circuit has been developed, and correspondingly, an effective EEE coupling coefficient was proposed for optimum design of this multilayer transformer. Commercial finite element analysis software is used to determine the validity of the developed equivalent circuit. Finally, a prototype sample was manufactured and experimental data was collected to verify the model's validity.
一个工作在半波长纵向谐振模式（λ/2 模式）下的多层叠层压电 Pb(Zr(1-x)Ti(x))O(3)（PZT）陶瓷变压器已经被分析了。这个压电变压器由一个厚度极化段（T 段）用于激励纵向机械振动，两个纵向极化段（L 段）用于产生高压输出，以及两个绝缘层叠在 T 段和 L 段之间，以提供输入和输出段之间的绝缘。基于压电本构和运动方程，开发了一个电弹电（EEE）等效电路，并相应地提出了一个有效的 EEE 耦合系数，用于这个多层变压器的优化设计。商用有限元分析软件被用来确定所开发等效电路的有效性。最后，制造了一个原型样品，并收集了实验数据来验证模型的有效性。
