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Application of a Poly-GPC System to Control a LCL-Filtered Grid Converter

This paper explores the application of polynomial reference tracking generalized predictive controller (Poly-GPC) to control the output current of the LCL filter connected to an AC grid. The Poly-GPC system allows the LCL output current to track the sinusoidal current reference generated to transfer the power from the Voltage Source Inverter (VSI) to the grid. The proposed controller considers that the sinusoidal current reference can be approximated as a set of polynomial signals. Simulation results show that the proposed controller can be used to control the LCL output current successfully.