Abstarct: Today, Distribution Generation (DG) resources are widely used in order to supply the local power demands and to inject both the active and reactive powers to the network in Point of Common Coupling (PCC). Moreover, by using an appropriate reactive power control system, the voltage profile and power quality indices can also be improved. Hence, DGs mostly have resolved the distribution system drawbacks, and eliminate the need of using other reactive compensators. Wind turbine is one of the most commonly used resources in this direction. On the other hands, such resources necessitate the use of power electronic convertors so that to be connected to the power grid. Therefore in this study, different controlling strategies for power electronic converters are analyzed. In this thesis, a typical PMSG-Wind Turbine system is considered and connected to a weak grid via a back to back (B2B) converter, with the purposes of delivering the maximum level of active power to the network. Furthermore, by using an appropriate switching control strategy for the grid-side converter, the reactive power injection of DG is also controlled so that to enhance the voltage profile especially during the fault or over load occurrences. In this study, both the utilized converters are controlled via the Pulse Width Modulation (PWM) technique. Finally, the simulation is performed in MATLAB/Simulixnk software environment and the results are analyzed. The results perfectly demonstrate the performance of the designed DG system.