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This paper present the design, analysis and implementation of a control scheme Two Degrees Of Freedom 2DOF combined with a Repetitive Control. This reduces Total Harmonics Distortion in voltage (THDv), when inverters that operates as voltage sources in microgrids. The controller is designed to be applied to inverters operating in island mode. The goal is to keep the waveform, frequency and amplitude of the grid voltage, when it has linear or nonlinear loads. The analysis and design of the control system is presented in detail.

renewable energy and power quality journal

Control design of a two degree of freedom combined with repetitive controller applied to a single phase inverter power generation in the context of microgrids