Modeling and analysis of multilayer piezoelectric transformer

On a Robust Modeling of Piezo-Systems

“…The literature shows that in such a multi-physical device modeling, the common approaches consists of analogical representation of the physical phenomena or finite elements analysis. In [12] [35] [37] [38] [44] the authors developed electrical and mechanical components that are analogous to the concerned system under some conditions. Assumptions and approximations are made to minimize computation efforts while achieving good accuracy as long as the assumptions made are satisfied.…”

Structure and electrical properties of PZT–PMS–PZN piezoelectric ceramics

“…because piezoelectric transformers have favorable advantages, such as low profile, low power consumption and no electromagnetic noise compared with conventional electromagnetic transformers. 1,2 Piezoelectric transformers operated with high vibration velocity under high power convert electrical energy to mechanical vibration. Usually, mechanical quality factor Q m is a referenced parameter of the dissipation of vibration energy.…”

A comparison of 1D analytical model and 3D Finite Element Analysis with experiments for a Rosen-type piezoelectric transformer

“…This has seen a resurgence in research efforts targeting lead-free ceramic PTs, with promising properties that can potentially rival PZT (e. g. KNN-KCT-Mn ceramics with Q m of 1900 and planar coupling factor of 0.4) [3]. Currently, according to the chosen vibration mode, three major types of PTs exist namely; the Rosen-type, which has found widespread use in applications requiring high transformation ratios (several hundred times) [3][4][5]; those that exploit thickness vibration mode [6,7]; and those based on radial vibration mode [8]. All three types of PTs are used in many applications ranging from DC/DC converters to electronic ballasts for fluorescent lamps.…”

“…-(3) and (4)-(5) in the primary and the secondary sides of the PT.The analytical solution of the linear system of five Eqs. (6)-(10) leads to the determination of the five unknowns A P , B P , A S , B S, and V S and give the mechanical displacements solutions u(x) along the transformer length and the voltage gain V S /V P :…”