J 2013

Bulk piezoelectric ceramic transformers

ERHART, Jiří

Basic information

Original name

Bulk piezoelectric ceramic transformers

Authors

ERHART, Jiří (203 Czech Republic, guarantor, belonging to the institution)

Edition

Advances in Applied Ceramics, 2013, 1743-6753

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

Solid-state physics and magnetism

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

is not subject to a state or trade secret

References:

RIV identification code

RIV/46747885:24510/13:#0000985

Organization

Faculty of Science, Humanities and Education – Technical University of Liberec – Repository

UT WoS

000316113800006

Keywords in English

PZT ceramics

Links

GAP102/10/1139, research and development project.
Changed: 10/3/2015 13:50, RNDr. Daniel Jakubík

Abstract

In the original language

In this contribution, we present a review on the various bulk piezoelectric ceramic transformers based on planar vibration modes. The studied transformer shapes include rectangular bar, rings and discs (e.g. disc ring dot) homogeneously poled in the thickness direction. Electrical parameters like transformation ratio, efficiency and input and output power are measured and modelled as a function of frequency and resistive load in the secondary circuit. Analytical modelling has been performed for the "Rosen type" and "ring dot" disc or ring transformers as well as for the bar transformers and several other geometries. Finite element analysis modelling has been performed for the set of other more complicated disc transformer geometries. An overview of the results on the studied transformers is presented, including data on transformation ratio, efficiency and optimum load.