Power density maximization of DC-DC converter

Abstract

This paper proposes a method which consists of a phase shift converter with a current doubler rectifier on the output side, the phase shift converter operating at frequency as high as 20–25kHz (depending on the requirement of the application). Ferrite core transformer is used instead of conventional one, which being bulky leads to very large amount of core loss. Unlike the conventional method, number of turns of the transformer is reduced and the overall power density is increased. The current doubler rectifier doubles the input current as needed for few vital applications. The circuit for phase shift converter with the current doubler was simulated using PSPICE SOFTWARE and the following results were obtained. For an input current of 4Amps, an output of 10.2Amps was obtained, that eventually settles at nearly 8.5 Amps. A hardware model of the proposed method validates the results verified with the simulation results.