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This paper presents a methodology to obtain an optimized model of a Radial Piezoelectric Transformer with primary and secondary at same piezoelectric ceramic surface. Three-dimensional simulation by Finite Element Method is utilized as analysis tool. Methodology aim is obtaining an improved accuracy model for low cost Piezoelectric Transformer samples. Finite Element analysis was done in order to...
Ring shaped PTs (piezoelectric transformers) are an attractive alternative to magnetics in power converters. The achievable energy efficiency is 98% and the power density is up to 30 W/cm3. Additionally power supplies based on PTs display low levels of conducted and radiated EMI due to power conversion based on the piezoelectric effect. Rooted in the physics of this effect, both the in- and output...
Piezoelectric transformer (PZT) is a device which transforms voltage by piezoelectric effect and converse piezoelectric effect of ceramic material. Compared with electromagnetic transformer, it has favorable characteristics of miniaturization, electromagnetic-noise free and the variable voltage gain with frequency and impedance. The modeling of piezoelectric transformer is the base of control and...
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