Title :
Design considerations for achieving ZVS in a half bridge inverter that drives a piezoelectric transformer with no series inductor
Author :
Bronstein, Svetlana ; Ben-yaakov, Sam
Author_Institution :
Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel
Abstract :
A general procedure for maintaining soft switching in inductor-less half-bridge piezoelectric transformer (PT) inverter was analyzed by applying the equivalent circuit of the PT device. Soft switching capability of the PT was delineated and detailed guidelines are given for the load and frequency boundaries, voltage transfer function and the output voltage that will keep the operation under ZVS conditions. The analysis takes into account the maximum power dissipation of the PT, which is used to bind the permissible power transfer through the device. The analytical results for the half-bridge inductor-less PT inverter were verified by simulation and experiments for a radial vibration mode PT.
Keywords :
bridge circuits; equivalent circuits; invertors; piezoelectric devices; power transmission; switching circuits; transformers; ZVS; equivalent circuit; frequency boundaries; half bridge inverter; half-bridge inductor-less PT inverter; inductor-less half-bridge piezoelectric transformer inverter; load; maximum power dissipation; output voltage; piezoelectric transformer; radial vibration mode; soft switching capability; voltage transfer function; Bridge circuits; Equivalent circuits; Frequency; Guidelines; Inductors; Inverters; Power dissipation; Switching circuits; Transfer functions; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 2002. pesc 02. 2002 IEEE 33rd Annual
Print_ISBN :
0-7803-7262-X
DOI :
10.1109/PSEC.2002.1022516
