Diseño y simulación del control de un transformador de estado sólido de tres etapas con entrada trifásica y salida trifásica basado en un convertidor DC-DC de doble puente activo y un convertidor ac-dc multinivel de diodo anclado

Abstract

This project consists to design a controller for a Solid State Transformer (SST), with the purpose of showing a transformer base model to be used in a smart Grid. The aim of this project is to improve the power quality of the power grid, also shows a way to include renewable energy to the system. It mentions some problems affecting the current electrical system as the SST can correct these problems, shows the advantages of having a Smart Grid, shows the topology used in SST, dimension components used in each stage, models each plant converter, we present the design of the controller and the strategy to use to control each stage of the SST. For the purpose of designing the controller of the SST we have to design a controller for each stage. For the first and the last stage is designed cascade control to make control of voltage and current, for the DAB we control the output voltage and finally shown simulations of the SST to be affected by various disturbances. Due to the high cost of SST components do not perform any physical implementation, and this project has been limited to the simulation of SST using ideal switches to keep the design simple and easy to interpret. All work is done with the help of the tools PLECS and SIMULINK, MATLAB program, which simulates the modeled system.