This document proposes the use of repetitive control technique to be implemented in a three-phase inverter, considering its connection to a microgrid. The goal is to control the system current while simultaneously implementing harmonic compensation to current. The Park and Clark transforms will be used to simplify the analysis and control of three-phase systems, allowing them to work with more manageable coordinates. The effectiveness of harmonic compensation is confirmed through the DFT along with the results of the simulations in Matlab.