Modelado de sistemas de generación fotovoltaicos con almacenamiento en banco de baterías de litio para una microrred AC con conexión on grid.

Abstract

The aim of this research project was to model a photovoltaic generation system with lithium- ion battery bank storage for an Alternating Current (AC) microgrid with on-grid connection. An analysis of the architecture and operation of the microgrid (MR) and each of its elements was carried out. The elements of the microgrid (MR) under analysis were the consumption load, distributed generation (DG) and distributed storage, (DS) and in some cases, as in this application, the distribution network. We proceeded with the selection of the elements for the modeling of each one of them with their respective choice of network configuration, choice of power consumption and sub-model, modeled independently through Simulink and then integrated into a single block. In addition, information was compiled regarding the control of electronic converters, among these are the most commonly used options such as pulse width modulation (PWM) and Clarke and Park transformations to perform inverter control for both solar panels and electrochemical batteries. The results obtained demonstrate that the current- controlled inverters work correctly so that both the panels and the batteries are connected to the grid, allowing for the complete integration of renewable energy and energy storage technologies. It is concluded that this is an effective energy management method. For improved functioning it is recommended that an autonomous battery control should bedeveloped.