Low-stress and efficient design of integrated boost series parallel fly-back converters

Abstract

This paper Presents comparative analysis of IBSPFC & QSC Based IBSPFC by using FPGA. By using this IBSPFC the voltage stress is reduced across the switch when compare to conventional fly-back converters. The multi winding transformer gives higher reliability i.e. if any one of the winding damages other one supplies power to the load. On the otherhand, QSC based IBSPFC will achieved Zero voltage & Zero current switching, whichwill increase more efficiency when compare to conventional single stage integratedconverters and IBSPFC. Operating modes of QSC, based IBSPFC&IBSPFC have beenintroduced. The primary side winding of the fly-back transformer is coupled in seriesacross with bulk capacitor to minimize switch voltage stress and the secondary winding ofthe 1:1 fly-back transformer. Basic voltage mode control Techniques are used to controlthe output voltage and current. An input voltage of 25V primary side and 50V battery atsecondary side, 100v output, 100W and 100KHz DC-Dc isolated QSC based IBSPFC isimplemented using FPGA SPARTAN6LX9 and experimental results and comparativetable have been presented.