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

摘要

In this paper a zero-voltage transition low current ripple fifth-order boost converter is proposed which offers significant advantages over conventional second-order boost converter. The fifth-order converter provides higher voltage level at lower duty ratios and the ripple at input and output is also reduced. The zero-voltage transition cell which is also incorporated into the circuit provides further advantages in terms of reduction of switching losses for nearly all the switching devices. Mathematical analysis of the proposed converter is done to find the various modes of operation and their time durations. In order to verify the soft-switching performance of this converter simulation is carried out in PSIM. To further test the advantage provided by the proposed converter over hard switched converters a comparative loss analysis is carried out in MATLAB for various load conditions. The converter performance is predetermined for a 12 to 36 V, 25 W prototype in simulation and then compared with experimental results. Experimental measurements are in close agreement with simulations.