This paper discusses the design of a repetitive feedbackcontroller for a grid-connected two-level three-phase voltagesource inverter connected between a DC source and the grid through an LCL filter. The controller incorporates a classicaltwo loop feedback of the output current and the capacitorcurrent in addition to a repetitive feedback loop. The resultsshow that the proposed technique improves the steady stateerror and the total harmonic distortion of output current inpresence of utility harmonics.
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