Control of Simulated Solar PV Microgrid Operating in Grid-Tied and Islanded Modes

In this paper, a DC-bus microgrid, based on solar array and battery storage, is simulated and the control system is developed to operate the microgrid in grid-tied and islanded modes. Microgrid modules, including the electric elements, the converters and the local control units, have been developed with the focus on the control schematics. The control system provides the signals to the converters for DC-bus voltage regulation and current control, for power transfer, depending on the operation mode. The control configuration is flexible to allow operating the microgrid under different modes. This structure provides a mechanism to carry out any condition that can be developed by the power management system. The microgrid has been simulated using MATLAB/Simulink platform and different scenarios have been tested to verify the control system and the microgrid response.

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