Current control of single-phase inverter for wind turbine applications

This paper presents a wind turbine system operating in grid-connected mode. Grid connection of small permanent magnet synchronous generator (PMSG) based wind turbines requires a power conditioning system comprising a bridge rectifier, a dc-dc converter and a grid-tied inverter. The control structure, based on a current controller and a synchronization algorithm are implemented in the grid-tied inverter. The goals of this paper are to implement a control technique for the grid side inverter including a LC filter and a harmonic compensation technique. An evaluation in terms of current harmonic distortion when running in steady state condition is made. Simulation results present the evolution of analyzed current controller, concerning the quality of the delivered energy.