Multilayer Modal Actuator-Based Piezoelectric Transformers
Resource
IEEE Transactions on Ultrasonics, Ferroeletrics, and Frequency Control 54 (2): 359-367
Journal
IEEE Transactions on Ultrasonics, Ferroeletrics
Journal Volume
54
Journal Issue
2
Date Issued
2007
Date
2007
Author(s)
Abstract
An innovative, multilayer piezoelectric transformer equipped with a full modal filtering input electrode is reported herein. This modal-shaped electrode, based on the orthogonal property of structural vibration modes, is characterized by full modal filtering to ensure that only the desired vibration mode is excited during operation. The newly developed piezoelectric transformer is comprised of three layers: a multilayered input layer, an insulation layer, and a single output layer. The electrode shape of the input layer is derived from its structural vibration modal shape, which takes advantage of the orthogonal property of the vibration modes to achieve a full modal filtering effect. The insulation layer possesses two functions: first, to couple the mechanical vibration energy between the input and output, and second, to provide electrical insulation between the two layers. To meet the two functions, a low temperature, co-fired ceramic (LTCC) was used to provide the high mechanical rigidity and high electrical insulation. It can be shown that this newly developed piezoelectric transformer has the advantage of possessing a more efficient energy transfer and a wider optimal working frequency range when compared to traditional piezoelectric transformers. A multilayer piezo-electric, transformer-based inverter applicable for use in LCD monitors or portable displays is presented as well. © 2007 IEEE.
SDGs
Other Subjects
Electric inverters; Electrochemical electrodes; Multilayers; Piezoelectric ceramics; Piezoelectric transducers; Full modal filtering; Piezoelectric transformers; Single output layers; Structural vibration; Electric transformers; acoustics; article; computer aided design; electrochemistry; electronics; energy transfer; equipment; equipment design; evaluation; instrumentation; transducer; Acoustics; Computer-Aided Design; Electrochemistry; Electronics; Energy Transfer; Equipment Design; Equipment Failure Analysis; Transducers
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