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Experimental Verification of an Analytical Model for the Ringshaped Piezoelectric Transformer

Result description

Piezoelectric transformers prepared using bulk PZT ceramic rings poled homogeneously along thickness were studied experimentally on the commercially available rings (PZT type APC841, d = 20 mm, D = 50 mm and thickness 6 mm, aspect ratio d/D = 0.40) as well as analytically. Input and output parts were formed by the concentric ring electrodes. The fundamental and the first overtone were measured for the transformation ratio and efficiency. Ring transformer geometry shows the high transformation ratios (upto 108 under no-load condition for the first overtone) and efficiencies 91-99% for the properly designed electrode diameter. The optimum resistive load was relatively small within the range of 0.1 ? 5 k?. The optimum aspect ratio of electrode was foundas d1/D = 0.70. The fundamental resonance frequency was found insensitive to the electrode diameter contrary to the first overtone. Analytical calculations are also used for the comparison of the mechanically free and clamped transformer.

Keywords

piezoelectric transformerpiezoelectric ceramicsresonator

Alternative languages

  • Result language

    angličtina

  • Original language name

    Experimental Verification of an Analytical Model for the Ringshaped Piezoelectric Transformer

  • Original language description

    Piezoelectric transformers prepared using bulk PZT ceramic rings poled homogeneously along thickness were studied experimentally on the commercially available rings (PZT type APC841, d = 20 mm, D = 50 mm and thickness 6 mm, aspect ratio d/D = 0.40) as well as analytically. Input and output parts were formed by the concentric ring electrodes. The fundamental and the first overtone were measured for the transformation ratio and efficiency. Ring transformer geometry shows the high transformation ratios (upto 108 under no-load condition for the first overtone) and efficiencies 91-99% for the properly designed electrode diameter. The optimum resistive load was relatively small within the range of 0.1 ? 5 k?. The optimum aspect ratio of electrode was foundas d1/D = 0.70. The fundamental resonance frequency was found insensitive to the electrode diameter contrary to the first overtone. Analytical calculations are also used for the comparison of the mechanically free and clamped transformer.

  • Czech name

  • Czech description

Classification

  • Type

    Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BM - Solid-state physics and magnetism

  • OECD FORD branch

Result continuities

Others

  • Publication year

    2015

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Electrical and Electronics Engineering

  • ISSN

    2067-2128

  • e-ISSN

  • Volume of the periodical

    8

  • Issue of the periodical within the volume

    2

  • Country of publishing house

    RO - ROMANIA

  • Number of pages

    6

  • Pages from-to

    23-28

  • UT code for WoS article

  • EID of the result in the Scopus database

Result type

Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

Jx

CEP

BM - Solid-state physics and magnetism

Year of implementation

2015