Fuzzy Logic Control of DC-DC converters for Navy shipboard Medium Voltage DC Distribution System

Abstract

Recent advancements in shipboard power system have focused on Medium Voltage DC Distribution System in Navy Ships. This system requires the use of high input to output voltage DC-DC converters to act as buffer between the MVDC bus and the load centers within the ship. The load lines to these converters which often involve other DC-DC converters and inverters, will be powering complex machinery and other sensitive systems. So, proper regulation and control of the DC-DC converter is necessary. This paper proposes a Fuzzy Logic Controller implemented on Buck Converter used in an MVDC Distribution System and compares the performance with a conventional PI controller. The simulation results using MATLAB illustrates the usefulness of FLC over the conventional PI controller.