Abstract
Photovoltaic (PV) systems are the emerging clean power generation and eco-friendly sources. However, the quality of power is notably worsened due to high switching loads that have been connected to grid-tied PV systems. The nonlinear loads (Power electronics circuits), change in irradiation level, and high impedance faults are the causes of power quality issues. This article proposes an adaptive inter-coupled generalized integrator and fuzzy logic gain extraction-based PID controller (FLPID-ICGI-FLL) control scheme for the grid-tied inverter in PV applications. Moreover, the PV system’s feed-forward constituent is combined in the FLPID-ICGI-FLL for adapting the variations associated with the PV irradiation levels. The proposed FLPID-ICGI-FLL controller accommodates the variations in the grid, PV irradiation level, dynamic dc-link voltage, and load to evaluate the PWM pulses for the grid-tied inverter. The proposed FLPID-ICGI-FLL is executed in MATLAB and Simulink under the grid and load dynamic conditions. The simulation outcomes are validated on prototype experimental setup using dSPACE. Moreover, the comparative study is also analyzed to present the efficacy of the FLPID-ICGI-FLL control scheme. Finally, the operation of the proposed FLPID-ICGI-FLL controller is found good and the power quality of the grid currents is improved within the IEEE-519 standard limits.
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Elangovan, P., Mohanty, N.K. An Adaptive Grid-Tied Inverter Control Scheme for Power Quality Enrichment in Photovoltaic System. Iran J Sci Technol Trans Electr Eng 48, 303–315 (2024). https://doi.org/10.1007/s40998-023-00667-w
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DOI: https://doi.org/10.1007/s40998-023-00667-w