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

Abstract

This project presents the design and control of a solid state transformer (SST). One of the main functions of SST is the ability to integrate alternative energy sources, in case the SST get disconnected of the main power, and through other energy source to continue to feed the load and allow the flow of power to the network, keeping it parameters in the set values and providing stability to the system within presence of disturbances in a power system, improving the power quality. The SST was designed to work with a single-phase input and output, consists of three stages which are: Rectifier, DAB and Inverter. All the elements are sized and control of electrical parameters is performed at each one of different stages. To verify the correct operation of the SST, some tests are performed (Sag & Swell, presence of harmonics, overload, low power factor and DC power injection in the LVDC link). The work is done using SIMULINK, PLECS and MATLAB, to simulate the designed system.