Title :
Temperature field of the piezoelectric transformer operating in longitudinal vibration mode
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
In this study, a theoretical model of the steady-state temperature field in a bar-shaped piezoelectric transformer operating in longitudinal vibration mode is developed, and the characteristics of the temperature field are analyzed numerically. Being different from previous work, the effects of the stress distribution and the relative positions of input and output parts on the internal loss distribution are taken into account in this model. The calculated temperature rise and its distribution agree well with the experimental data. Using this model, useful guidelines for the thermal design of this transformer are obtained.
Keywords :
internal stresses; piezoelectric devices; potential transformers; temperature distribution; vibrations; bar-shaped piezoelectric transformer; internal loss distribution; longitudinal vibration mode; piezoelectric transformer; steady-state temperature field; stress distribution; temperature distribution; temperature field; temperature rise; thermal design; Boundary conditions; Electrodes; Equations; Internal stresses; Piezoelectric materials; Resistance heating; Resonant frequency; Steady-state; Temperature distribution; Vibrations;
Conference_Titel :
Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE
Print_ISBN :
0-7803-7582-3
DOI :
10.1109/ULTSYM.2002.1193565
