Development of an FPGA-based controller PCB used in the control system of a modular multiport power converter

Abstract

The aim of this thesis is to develop a fully functioning Field Programmable Gate Array (FPGA-based) digital controller printed circuit board to be integrated in a Dual Active Bridge (DAB) module. It will serve as the slave control unit in a partially distributed control structure of a Solid State Transformer (SST). The SST topology consists of stacked Input-Series-Output-Parallel connected modules; each module is composed of a half-bridge cell accompanied by an isolation stage formed by a DAB module. The work is outlined by four ideas, first understanding the addressed SST topology to get an idea about the slave controller requirements and optimize its design, second, developing the FPGA-based controller PCB design and commissioning the manufactured prototype, third developing the analogue to digital converter needed to interface this digital controller with the controlled system and finally general understanding of the implemented communication link between this developed slave unit and the central control