Title :
A new control strategy for an AC/DC converter based on a piezoelectric transformer
Author :
Díaz, Juan ; Nuño, Fernando ; Lopera, Juan Manuel ; Martín-Ramos, Juan Antonio
Author_Institution :
Univ. de Oviedo, Gijon, Spain
Abstract :
Piezoelectric transformers (PTs) are an attractive solution to reduce size and weight in ac/dc converters. In this paper, a PT-based topology is presented together with a control method. As an application, an 8-W ac/dc adapter (110 VAC input, 12 VDC output) is presented operating at frequencies around 500 kHz.
Keywords :
AC-DC power convertors; battery chargers; piezoelectric devices; resonant power convertors; transformers; voltage control; 500 kHz; 8 W; AC-DC converter; PT; battery charger; control method; piezoelectric transformer; size reduction; weight reduction; Capacitance; Capacitors; Circuit topology; DC-DC power converters; Equivalent circuits; Filters; Frequency; Inductors; Resonance; Switches; Battery charger; PT; PTs; control strategy for piezoelectric transformer; converters; piezoelectric transformers;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2004.831739
