A 600-W Switched-Capacitor AC–AC Converter for 220 V/110 V and 110 V/220 V Applications-Telles B. Lazzarin, Romero L. Andersen, Guilherme B. Martins, and Ivo Barbi-UNIVERSIDADE FEDERAL DE SANTA CATARINA PROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA ELÉTRICA-BRASIL

Abstract—This letter proposes an ac–ac converter based on the switched-capacitor principle. The new topology is described, ana- lyzed, designed, and tested in the laboratory. The converter char- acteristics at the frequency of the input voltage and at the switching frequency are described herein. The absence of magnetic elements and the stress voltages in all components equal to half the input voltage are the main advantages of the proposed ac–ac converter. In order to demonstrate the performance of this converter a de- sign example and experimental results for a prototype of 600 W, 220 Vrms high-side voltage, 110 Vrms low-side voltage, and switch- ing frequency of 50 kHz are reported herein. The maximum and nominal efficiencies obtained were 95.6%and 90.6%, respectively.

DISSERTAÇÕES DE MESTRADO 2013

ESTUDO DE CONVERSORES A CAPACITORES CHAVEADOS.-Guilherme Brunel Martins
LINK http://www.ivobarbi.com/PDF/dissertacoes/DissertacaoGuilhermeBrunelMartins.pdf