Use of control based on passivity to mitigate the harmonic distortion level of inverters

The insertion of distributed generation systems has growth in the last years. The use of switching converters can produce voltage and current harmonics in the point of common coupling (PCC). In this context, this work presents the use of the passivity-based control in a single-phase inverter connected to the grid. The performance of this technique is compared with the conventional proportional integral controllers and with the multi-resonant controller when there is a high distortion in the PCC voltage. Simulation results show that the passivity-based control is a good technique in this situation, due to its high capability to reject disturbances.