Design and operation for a standalone DG-SPV-BES microgrid system

This paper proposes a systematic control for a solar photo-voltaic (SPV) array, diesel generator (DG) and battery energy storage (BES) integrated microgrid system. This system intends to utilize the maximum SPV power using the maximum power point tracking (MPPT) controller under varying operating conditions. It maintains the power balance with the provision of catering the load requirement by providing charging and discharging of the battery and provide an optimal operation of DG. The peak detection control technique is deployed for the management of power between the distributed energy sources. The control method together with three leg voltage source converter (VSC) allows reactive power compensation, harmonics elimination and voltage regulation at the point of common coupling (PCC). The frequency of the system is maintained through a DG set. The detailed analysis is conducted by modelling this system using sim power system (SPS) toolbox in Matlab/Simulink and the performance of the system is validated using simulation results.

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