NDLI: Finite element analysis on piezoelectric ring transformer

Content Provider	IEEE Xplore Digital Library
Author	Hing Leung Li Jun Hui Hu Chan, H.L.H.
Copyright Year	2002
Description	Author affiliation: Dept. of Appl. Phys. & Mater. Res. Center, Hong Kong Polytech. Univ., Kowloon, China (Hing Leung Li; Jun Hui Hu; Chan, H.L.H.)
Abstract	By using concentric electrode patterns, a ring-shaped transformer can be designed to operate at its high order radial extensional modes. In our previous study, a piezoelectric transformer (PT) using the third symmetric radial extensional mode was studied and characterized. A maximum efficiency, transformation ratio and power density of 92.3 %, 1.9 and 14.3 W/cm/sup 3/ could be achieved. In this paper, three-dimensional (3D) finite element models were built to study and analyze the vibration characteristics of the PTs using higher order modes (>3). The resonance frequencies, mean electromechanical coupling effect, and other open-circuit characteristics are simulated and compared with experimental measurements. The dimensions for the PTs using higher order radial extensional modes are optimized by FEM. The ring PT offers advantages of simple structure and small size. It has good potential in making low cost PT for low voltage applications.
Sponsorship	Ultransonics Ferroelectr., & Frequency Control Soc
Starting Page	1177
Ending Page	1180
File Size	327630
Page Count	4
File Format	PDF
ISBN	0780375823
ISSN	10510117
DOI	10.1109/ULTSYM.2002.1192503
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-08
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Finite element methods Electrodes Tensile stress Resonance Electromagnetic fields Frequency Compressive stress Physics Assembly Design automation
Content Type	Text
Resource Type	Article

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