Title :
Analysis of piezoelectric transformer by using finite element method and equivalent-circuit considering load variation
Author :
Joo, Hyun Woo ; Lee, Chang-Hwan ; Jung, Hyun-Kyo
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
The three-dimensional finite element analysis for piezoelectric transformers is presented. Numerically combined equivalent-circuit method for consideration of load variation, is proposed. The three-dimensional finite element routine in this paper is confirmed experimentally by analyzing piezoelectric transducer. Using results from finite element analysis of piezoelectric transformer, equivalent-circuit parameters of piezoelectric transformer are obtained. The method to calculate loss parameter of piezoelectric transformer is proposed. Characteristics of piezoelectric transformer due to load variation are analyzed. The validity of the proposed method is confirmed by loss calculations
Keywords :
dielectric losses; equivalent circuits; finite element analysis; piezoelectric devices; transformers; equivalent-circuit parameters; finite element method; load variation; loss calculations; loss parameter; piezoelectric transducer; piezoelectric transformer; Dielectrics; Electrodes; Equations; Finite element methods; Frequency; Load management; Piezoelectric devices; Piezoelectric transducers; Resonance; Surface impedance;
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
DOI :
10.1109/ULTSYM.2001.991663
