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Analysis of piezoelectric transformer by using finite element method and equivalent-circuit considering load variation
In this paper, the three-dimensional finite element analysis for piezoelectric transformer 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.
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