Análise do controle de um conversor DC/AC bidirecional trifásico durante faltas elétricas

Abstract

This work presents an analysis of the behavior of the control of a DC/AC converter when there is a phase failure in the electrical network, it is the same converter used in renewable sources such as solar and wind energy. Due to the uninterrupted population and technological growth, there is a growth in energy demand on the planet. Given this, there is an increasing need for investments in cleaner and more efficient alternative energy sources. This type of energy is provided through renewable sources such as solar and wind power plants that generate an extremely smaller impact when compared to non-renewable sources. Both plants are connected directly to the grid by means of converters that are essential to convert direct current into alternating current and make it possible to inject this type of energy into the electrical grid, preserving the quality of the power injected into the distribution grid, as there must be reliability and continuity in electrical supply. In view of this, the present presents an analysis of the behavior of a three-phase bidirectional DC/AC converter when electrical faults occur in the network. Three types of electrical faults were analyzed. As a result, it is possible to identify the behavior of the converter in each of these faults.