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http://dx.doi.org/10.13067/JKIECS.2012.7.6.1315

Characteristics of AC-DC Converter using Multilayer Piezoelectric Transformer  

Shin, Hyun-Yong (남서울대학교 전자공학과)
Publication Information
The Journal of the Korea institute of electronic communication sciences / v.7, no.6, 2012 , pp. 1315-1320 More about this Journal
Abstract
In this study, piezoelectric AC-DC converter using ring-dot type multilayer piezoelectric transformer with no anisotropic of polarization was developed. Considering the characteristics of piezoelectric transformer which is very narrow operating frequency range, piezoelectric converter was designed with mixed structure of PFM driving method for feedback control of oscillation frequency and PWM driving method for output control. Maximum power and allowed current of the developed piezoelectric converter showing stable driving with minimum heat was 25W and 900mA, respectively. The output voltage of the piezoelectric converter was controlled by the driving oscillation frequency and showed stable and efficient operating characteristics at the maximum power.
Keywords
Multilayer ceramics; Piezoelectric transformer; AC-DC converter; Piezoelectric property; Resonance frequency;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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