Abstract
A control technique for the single-stage solar photovoltaic-distribution static compensator (PV-DSTATCOM) integrated to a three-phase grid is presented in this article. The continuous-time adaptive Least Mean Square (CLMS) algorithm with Fractional Order Proportional Integral (FOPI) controller has been proposed to control the DSTATCOM. Perturb and Observe-based Maximum Power Point Tracking yields peak power production from the solar photovoltaic array. The precise control of PV-DSTATCOM by the proposed CLMS with FOPI controller has improved the power quality of the grid. This is achieved by utilizing the proposed algorithm's capability to effectively track the time-varying nature of irradiance and load changes, adjust weighting factors, and minimize errors. Simulations in MATLAB/Simulink demonstrate its superior performance in optimizing system behavior under intermittent sunlight, nonlinearity, and load imbalances. The grid current has been sinusoidally balanced with reduced total harmonic distortion and meets IEEE-519 standards in both steady-state and dynamic situations. The proposed CLMS with FOPI controller performs better than other methods in the literature.
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