A HALF-BRIDGE SWITCHED-LINEAR CONVERTER
Dalton L. R. Vidor1; Paulo César Cardoso Godoy2; Everton Rosa3; Nataniel Rigo3; Jose Renes Pinheiro3
1 Centro Universitário Ritter dos Reis, ULBRA and UFSM; 2 Universidade Luterana do Brasil; 3 Universidade Federal de Santa Maria
Resumo
This article presents a half-bridge hybrid converter named Switched-Linear (SL) that can operate as a DC-DC, DC-AC or AC-DC converter. The linear power unit is a power amplifier, which is fed by two tracking power supplies to boost the efficiency of the linear unit without scarifying any virtues of linear power amplifier. It can be achieved by making the voltage in the linear amplifier the lowest possible level and adequate to application. The main goal of this work is to guarantee the possibility of draining reversal power energy whenever it processes reversal power flux and/or non-resistive loads and maintain high efficiency. Therefore, by combining the linear power amplifier with the switched power amplifier, the system has synthetic performance of high fidelity, high efficiency and excellent dynamic characteristics.
Palavras-chave: switched-linear; hybrid; high fidelity; excellent dynamic characteristic; high efficiency