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A comparison between two current control methods for grid-side inverter, i.e. PI control and forward predictive control, is made. The PI current control is implemented in d-q synchronous frame, while the forward predictive current control is implemented in abc stationary frame. The paper presents both simulation and experimental results, which were made at a reduced scale (2.2 kW). The constant-power test showed that both methods have good results in respect to existing grid codes.