CL-filter design for grid-connected CSI

Grid-connected current source inverter (CSI) employs CL-filter to meet the harmonic limitations set by IEEE 519-1992 and IEEE 1547-2008. However, parameter design for the CL-filter is rarely studied and no formalized approaches are followed. Therefore, this paper identifies the limitations in designing CL-filters for a single-phase grid-connected CSI and presents a complete design procedure which considers reactive power compensation, harmonic attenuation and optimization of the filter parameters. The design is validated by simulation in MATLAB.