masterThesis
Conversor CA-CC monofásico de estágio único empregando o conversor SEPIC com interruptores do lado CA
Fecha
2015-02-10Registro en:
HIRTH, Marcos Paulo. Conversor CA-CC monofásico de estágio único empregando o conversor SEPIC com interruptores do lado CA. 2015. 118 f. Dissertação (Mestrado em Engenharia Elétrica) - Universidade Tecnológica Federal do Paraná, Ponta Grossa, 2015.
Autor
Hirth, Marcos Paulo
Resumen
This work presents the analysis of a single-phase single-stage switched-mode power supply based on a SEPIC converter with AC-side switches. The SEPIC converter with AC-side switches has the benefit of having fewer semiconductors in conduction during a switching period when compared with the traditional topology. Thus, the overall efficiency is expected to increase. The input current is nearly sinusoidal without the use of a current loop control since the converter is operating in discontinuous conduction mode. A system disadvantage is related to the constraint in the choice of transformer turns, which leads to high current values in the secondary-side for lower output voltage specifications. The theoretical analysis, a design methodology and experimental results from a 300 W converter are presented. The converter was designed for a 127 V of input voltage, 200 V output voltage and switching frequency 50 kHz.