A High Power Medium-Voltage DC Amplifier System

In this paper the concept of a medium-voltage dc amplifier system is proposed. The dc amplifier system must provide a medium-voltage dc bus with the possibility of superposing a high bandwidth time-varying signal and should be capable of producing voltage excursions at a high slew-rate. This is intended to facilitate the development of new technologies, i.e. new high power non-linear loads based on power electronics, in all electric ships as part of the newly proposed MVDC ship power system. This paper sets forth the set of parameters and specifications of the medium-voltage dc amplifier system and proposes a specific circuit topology to achieve the required characteristics. Simulation results verify the feasibility and demonstrate highly dynamic performance of the proposed system configuration.