Title :
Optimal design of piezoelectric transformer for high efficiency and high power density
Author :
Seo, J.M. ; Choi, J.H. ; Moon, C.W. ; Sung, H.G.
Author_Institution :
Intelligent Mechatronics Res. Center, Korea Electron. Technol. Inst., Bucheon, South Korea
Abstract :
The characteristics of piezoelectric transformer, such as resonance frequency, matching impedance, electromechanical coupling coefficient and efficiency, were analyzed using the finite element analysis along with the equivalent circuit. The validity of the proposed numerical methods was conformed experimentally. Through all of the verified results, the optimal design for a high efficiency and high power density was determined using the multi-modal optimization algorithm based on an evolution strategy.
Keywords :
design engineering; finite element analysis; optimisation; piezoelectric devices; power transformers; electromechanical coupling coefficient; equivalent circuit; evolution strategy; finite element analysis; high efficiency; high power density; matching impedance; multimodal optimization algorithm; piezoelectric transformer; resonance frequency; Coupling circuits; Design optimization; Electrodes; Equivalent circuits; Finite element methods; Impedance matching; Piezoelectric effect; Power supplies; Resonance; Vibrations; asymptotic waveform evaluation; electro-mechanical coupling coefficient; evolution strategy for multi-modal optimization; finite element method; impedance matching; piezoelectric transformer;
Conference_Titel :
Electrical Machines and Systems, 2005. ICEMS 2005. Proceedings of the Eighth International Conference on
Print_ISBN :
7-5062-7407-8
DOI :
10.1109/ICEMS.2005.202978
