Design of a 2 MW DC-DC power supply using a medium frequency transformer

In this paper a 2 MW dc-dc converter is presented and design criteria are carried out. It deals with the preliminary design for the hardware implementation. The power supply shall have multiple targets such as an PV emulator or supply for a dc-micro grid in the research facility National Center for Reliable Electric Power Transmission of the University of Arkansas. The converter is designed for an output current up to 1500A and a output voltage up to 1500V. The first part of the paper deals with the comparison of several topologies on the basis of simulations. Based on these results a topology is selected. The second part focus on the electrical layout, detailed simulation results and mechanical assembly of the converter. Additionally, the expected costs are derived.