Abstract:
This paper presents a fuzzy based three-phase inverter in distributed generation which can be implemented for both islanded and grid-tied
operations. With no need for switching between two Corresponding controllers or critical islanding detection. In the proposed strategy the three-phase
inverter is regulated as just current source by inner inductor current loop in grid-tied and for islanding mode a voltage loop in the synchronous reference
frame will automatically regulates the load voltage. This paper proposes a unified load current feed forward to maintain the grid current waveforms in
grid-tied mode and load voltage waveforms in islanding mode to be undistorted even under nonlinear local load. The effectiveness of the proposed
strategy is validated by the simulation.
