Análise comparativa do controle de corrente em referencial estacionário e síncrono em um conversor trifásico à três fios aplicado a geração distribuída

Abstract

The growth of distributed generation has been strongly driven by the expansion of the solar photovoltaic and wind sector, which has gained prominence in the composition of the world energy matrix. In a period of one year, the number of connections in Brazil has more than doubled, according to 2019 Brazilian Association of Generation distributed data, and this number has been growing exponentially. In the context of the distributed generator, as an autonomous electrical energy processing unit, the field of power electronics seeks continuous improvement, with proposals for optimization in energy efficiency, power density, and operational performance. Therefore, the present work of master's seeks to contribute in this thematic, focused on the three-phase three-wire converter, connected to the grid, having as mission profile distributed generation. The work proposes a comparative analysis of the current control, in three different references frames, as know, abc, αβ and dq. The discussions are built through modeling and control, analyzing case studies based on external disturbances from the grid c.a. using a dynamic stiffness tool, a transient and steady-state, based on energy quality indicators (TDD) Total Demand Distortion and (THD) Total Harmonic Distortion, in the synthesized currents by the converter, and the computational cost of implementing the control in the three reference frames in an experimental platform, in C and Assembly language. Based on the results, the work seeks to present the behavior in a given reference, can bring to the system as positive or negative points in the context of distributed generation.