Bar Piezoelectric Ceramic Transformers Working in Longitudinal
Mode

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Bar Piezoelectric Ceramic Transformers Working in Longitudinal Mode

Přehled o publikaci

J 2015

Bar Piezoelectric Ceramic Transformers Working in Longitudinal Mode

SEBASTIAN, Tutu a Jiří ERHART

Základní údaje

Originální název

Bar Piezoelectric Ceramic Transformers Working in Longitudinal Mode

Autoři

SEBASTIAN, Tutu (356 Indie) a Jiří ERHART (203 Česká republika, garant, domácí)

Vydání

Ferroelectrics, London, Taylor & Francis, 2015, 0015-0193

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

Fyzika pevných látek a magnetismus

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Text clanku u nakladatele

Kód RIV

RIV/46747885:24510/15:#0001263

Organizace

Fakulta přírodovědně-humanitní a pedagogická – Technická univerzita v Liberci – Repozitář

DOI

https://doi.org/10.1080/00150193.2015.1099413

UT WoS

000370152000003

Klíčová slova anglicky

Piezoelectric transformer; PZT ceramics; resonator; transformation ratio

Změněno: 15. 4. 2016 12:19, Jiří Erhart

Anotace

V originále

The bulk transformer working in k33-mode in both input and output circuits was studied. Theoretical model was developed to describe the transformation ratio as a function of the electrode size, material properties, frequency and impedance load in output circuit. Numerical simulation allows for the optimization of the primary electrode aspect ratio (l1/l=0.34) for the best transformation ratio at no-load condition. Transformation ratio, efficiency, input and output impedances are measured for the set of samples with variable input/output electrode size for the lowpower signal and compared with derived formulae. The maximum efficiency of 52% and transformation ratio of U2/U1=0.59 at the optimum load of 20 kOhm is obtained for the input part volume ratio l1/l=0.40 for the fundamental resonance. The higher efficiency of 60% and the transformation ratio of 0.36 at the optimum load of 10 kOhm is observed at the first overtone for l1/l=0.69 input part volume ratio. The proposed piezoelectric transformer is therefore suitable for step-down transformer applications with low output power density (0.09W/cm3) and relatively low efficiency (50%).

Citovat

SEBASTIAN, Tutu a Jiří ERHART. Bar Piezoelectric Ceramic Transformers Working in Longitudinal Mode. Ferroelectrics. London: Taylor & Francis, 2015, roč. 486, č. 1, s. 13-24. ISSN 0015-0193. Dostupné z: https://doi.org/10.1080/00150193.2015.1099413.

@article{20600,
   author = {Sebastian, Tutu and Erhart, Jiří},
   article_location = {London},
   article_number = {1},
   doi = {https://doi.org/10.1080/00150193.2015.1099413},
   keywords = {Piezoelectric transformer; PZT ceramics; resonator; transformation ratio},
   language = {eng},
   issn = {0015-0193},
   journal = {Ferroelectrics},
   title = {Bar Piezoelectric Ceramic Transformers Working in Longitudinal Mode},
   url = {http://www.tandfonline.com/doi/abs/10.1080/00150193.2015.1099413?journalCode=gfer20},
   volume = {486},
   year = {2015}
}

TY  - JOUR
ID  - 20600
AU  - Sebastian, Tutu - Erhart, Jiří
PY  - 2015
TI  - Bar Piezoelectric Ceramic Transformers Working in Longitudinal Mode
JF  - Ferroelectrics
VL  - 486
IS  - 1
SP  - 13-24
EP  - 13-24
PB  - Taylor & Francis
SN  - 0015-0193
KW  - Piezoelectric transformer
KW  - PZT ceramics
KW  - resonator
KW  - transformation ratio
UR  - http://www.tandfonline.com/doi/abs/10.1080/00150193.2015.1099413?journalCode=gfer20
L2  - http://www.tandfonline.com/doi/abs/10.1080/00150193.2015.1099413?journalCode=gfer20
N2  - The bulk transformer working in k33-mode in both input and output circuits was studied. Theoretical model was developed to describe the transformation ratio as a function of the electrode size, material properties, frequency and impedance load in output circuit. Numerical simulation allows for the optimization of the primary electrode aspect ratio (l1/l=0.34) for the best transformation ratio at no-load condition. Transformation ratio, efficiency, input and output impedances are measured for the set of samples with variable input/output electrode size for the lowpower signal and compared with derived formulae. The maximum efficiency of 52% and transformation ratio of U2/U1=0.59 at the optimum load of 20 kOhm is obtained for the input part volume ratio l1/l=0.40 for the fundamental resonance. The higher efficiency of 60% and the transformation ratio of 0.36 at the optimum load of 10 kOhm is observed at the first overtone for l1/l=0.69 input part volume ratio. The proposed piezoelectric transformer is therefore suitable for step-down transformer applications with low output power density (0.09W/cm3) and relatively low efficiency (50%).
ER  -

SEBASTIAN, Tutu a Jiří ERHART. Bar Piezoelectric Ceramic Transformers Working in Longitudinal Mode. \textit{Ferroelectrics}. London: Taylor \&{} Francis, 2015, roč.~486, č.~1, s.~13-24. ISSN~0015-0193. Dostupné z: https://doi.org/10.1080/00150193.2015.1099413.