Design and analysis of zero-voltage transition fifth-order boost converter

Abstract

In this paper a zero voltage transition low source ripple current fifth order boost converter is proposed, which offers several advantages over conventional and higher-order boost converters. This converter provides higher voltage gain moderate duty ratios. The zero voltage transition auxiliary circuit is incorporated into the circuit to provide further advantages in terms of reduction of switching losses for nearly all the switching devices. Modes of operations are identified, and then steady-state analysis is presented for design purpose. In order to verify the zero-voltage switching, soft-switching, performance of this converter simulation is carried out in PSIM. To further test the advantage provided by this converter, over hard switched converters, a comparative analysis is carried out in simulation and experiment at various loading conditions. The converter performance is predetermined for a 24 to 48 V, 25 W prototype in simulation and then compared with experimental results. Experimental measurements are in close agreement with analytical predictions.