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

Abstract

This project is to design a controller Solid State Transformer (SST), with the aim of showing a transformer base model to be used in a smart Grid. The purpose of this project is to improve the power quality of the power grid, also provides a way to include renewable energy to the system. It mentions some problems affecting the current electrical system, and as the SST can correct these problems, shows the advantages disclosed having a Smart Grid, shows the topology used of SST, the components are sized for each stage, plant is modeled for each 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, the plant is modeled by each stage. For the first and the last stage is designed cascade control to control voltage and current, while for the DAB controlling the output voltage, finally shown simulations of the SST to be affected by various disturbances. Due to the high cost of SST components hardware has not been implemented; furthermore, this project has been limited to the simulation of SST using ideal switches to keep the design simple and easy to interpret. All simulations of the SST are done with the tools PLECS, SIMULINK and MATLAB.